Converting to EFI. Finally...A little help - Page 3 - S-10 Forum
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post #101 of 409 Old 03-30-2013, 08:10 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Okay...got it figured out. That wire that was hooked to the fuse box, goes to some kind of accessory. Has nothing to do with the neutral/park switch. Found the green and blue wire lying under the carpet. Not hooked to anything, so what function does this provide?? Truck ran fine with it disconnected? The new switch had a place for my MIA connection and for the green blue from the original harness. Plug and play baby.

I must be living right. Today the truck I was trying to get the knock sensor out of the other day? Someone had halfway pulled the motor, so I could get at the sensor...really easy. The oil sending unit and cutoff switch was lying on the GROUND...I just picked it up. And just about when I was getting ready to leave? Check out what I found!!


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1988 model car GT....was super clean inside. Can't believe someone junked this car. These were laying LOOSE in the "trunk" of the Fiero. I didn't even have to pull them. Even got the bolts....well 11 of them, but that's okay! They cost me $13. Woohoo! I'm going to do the black/aluminum look and get one of those cool black/aluminum Edelbrock air cleaners to go on it. The chrome covers actually didn't leak, but they are only 2 years old and rusty. That's pretty piss poor if you ask me. The chrome air cleaner is also rusty. These covers are in pretty good shape. They have a "used car lot" paint job on them which looks terrible. Guess I can either strip them or sandblast. What do you guys recommend on that?

Well, tomorrow I will be building the throttle body and getting it ready to bolt on. I just have to run my start wire, which I decided I am just going to fuse, push back outside the grommet under the hood of the truck and connect it to the solenoid. Why not? It's the shortest way and I don't have to hack into the factory harness that way.

Raven, I got the switch you recommended. I think my gauge is currently driving off the one that is in the driver's side head? I'm not sure what the two post one is for. But that certainly solves some of my problems. Great tip man. Would it be okay to run my fan off the hole in the head?




1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
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I had to cut my nut in half .
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post #102 of 409 Old 03-31-2013, 12:08 AM
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Re: Converting to EFI. Finally...A little help

Any other loose 2.8 parts in that fiero's trunk? Later year Fieros have that elusive timing cover that took me forever to find, the same one GM supplied with the 3.4 crate motor.
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post #103 of 409 Old 03-31-2013, 01:49 AM
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Re: Converting to EFI. Finally...A little help

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Any other loose 2.8 parts in that fiero's trunk? Later year Fieros have that elusive timing cover that took me forever to find, the same one GM supplied with the 3.4 crate motor.
Las Vegas Fiero Club has a bunch of 2.8's sitting in the shop for parts

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post #104 of 409 Old 03-31-2013, 05:35 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

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Any other loose 2.8 parts in that fiero's trunk? Later year Fieros have that elusive timing cover that took me forever to find, the same one GM supplied with the 3.4 crate motor.

You need one of those elusive covers? I have a brand new one I don't need since I put serpentine belts on my truck.

Any advice on these covers? They are a bolt on fit right? Just make sure to use Fiero gaskets? Was talking to damanx and he said use Fel Pro "blue" gaskets. Opinions? Comments?

Did grab most of those chrome intake bolts...Dunno what the hell I would use them for, but they sure are shiny.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #105 of 409 Old 03-31-2013, 08:49 AM
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Re: Converting to EFI. Finally...A little help

they bolt right on the heads no problem. use the blue rubber gaskets, the cork ones will leak. also, the valve cover bolts are really weak and easy to break, not much torque needed for those.

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post #106 of 409 Old 03-31-2013, 01:47 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Cork leaks period. I never use cork if I can help it. Thankd



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
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post #107 of 409 Old 03-31-2013, 10:05 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Got the TBI built this evening, and got it bolted on. Yippie.


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Okay...back on temp sensors. This is just threaded into this intake to hold it...It came out of the Edelbrock, and the connector is in my hands. What is it's purpose?? Do I still need it on this setup?


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And this guy drives the gauge right? If so, this is the one I need to cut and add to my three wire sensor correct?


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1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
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I had to cut my nut in half .
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post #108 of 409 Old 03-31-2013, 10:38 PM
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Re: Converting to EFI. Finally...A little help

The three wire sensor, more specifically the ECM connected sensor NEEDS to go in the intake close to the thermostat to send the correct data to the ECM.

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post #109 of 409 Old 03-31-2013, 11:00 PM
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Re: Converting to EFI. Finally...A little help

I think that 2 prong connector is for the EFE grid which you don't have anymore.
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post #110 of 409 Old 03-31-2013, 11:31 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

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Originally Posted by ericknight View Post
I think that 2 prong connector is for the EFE grid which you don't have anymore.

Awesome...then problems are solved. I will double check that on the diagram. I think you are right though. If that is the case, I will just thread the fan one into the other one in the intake, and plug the head one. Great!! Thanks!



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #111 of 409 Old 03-31-2013, 11:45 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Quote:
Originally Posted by The_Raven View Post
The three wire sensor, more specifically the ECM connected sensor NEEDS to go in the intake close to the thermostat to send the correct data to the ECM.
I am going to put it where the ECM 2 wire sensor exists now.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #112 of 409 Old 03-31-2013, 11:47 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Or hell...I could just leave it as is. If I don't need the EFE sender, then I have three holes, so I don't HAVE to install that 3 wire sender.

NO! Shit. I still have to install that vac switch...oh well



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #113 of 409 Old 03-31-2013, 11:51 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Noticed too that some of these 2.8 EFI intakes have TWO holes. One I saw at the junkyard had a hole to the left of where I have this sensor threaded and plugged. That rounded area... Of course I got one and subsequently bored.... had only one.


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And which one of these guys is which for the fuel return and delivery? I'm not going to use that stupid factory thing where you have to take the AC compressor off to change the fuel filter, but I don't remember how these came off two years ago when I pulled them....Maybe they are bent?


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1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #114 of 409 Old 04-01-2013, 12:26 AM
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Re: Converting to EFI. Finally...A little help

The larger one is feed.

Also the one that has a fitting on both ends will go between the TB and the filter.

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Tha toy: 1973 Datsun 240z 12.71 @115
Tha other Toy: 1923 T-Bucket
Another Toy: 1987 Buick Skyhawk
Typhony Old set-up: 1985 GMC Jimmy. 3.2L Turbocharged/Intercooled hybrid. 13.873 @ 99.08 Currently being reconstructed.


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post #115 of 409 Old 04-01-2013, 12:56 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

Cool. Facing the throttle body...which one is the feed and return on the TBI itself is a good question too. I may have the nipples reversed.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #116 of 409 Old 04-01-2013, 09:30 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Interesting things I saw at the junkyard today...I decided I would just buy that bracket that the fuel lines connect to...Apparently it bolts to an area on the block that looks like where the fuel pump on the 85 and older truck would have been but the hole for the push rod is cast over. As I recall on my 91...going on a memory from 17 years ago, the fuel filter was insided the driver's side frame rail. I bet my truck doesn't even have these bolt holes in the casting on my 3.4.


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Believe this was an 83 S10. If I am not mistaken, this is the infamous 1.9 Isuzu engine? My uncle had one of these. Got fantastic gas mileage, but wow was it slow. This is what I learned how to drive a stickshift on at age 15. This is the truck that we stuffed the V8 in back in 1989. We had to fabricate all the mounts and figure out the exhaust on the fly. There were no "kits" back then.


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I just loved this gigantic ACCEL coil on this truck! Man! High Performance!


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And I saw this on the "trunk" lid of the Fiero. Has absolutely NOTHING to do with this thread, but I thought I would share it.


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1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #117 of 409 Old 04-01-2013, 11:49 PM
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Re: Converting to EFI. Finally...A little help

damn i wish it was closer, i need inner door panels for my fiero lol, and wheels

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'97 Ram SS/T 360/.030 over.
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post #118 of 409 Old 04-02-2013, 08:04 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

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damn i wish it was closer, i need inner door panels for my fiero lol, and wheels

Hey dude..I kinda owe you one. What color do you need? This car has gold interior that is actually in very good shape. No wheels though. Let me know.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #119 of 409 Old 04-02-2013, 08:48 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

As I had feared, there was no place on the block for this filter bracket, so for now I am just going to leave it like it was. I cut the end of the supply line off (and deburred) and routed it behind the vacuum switch. and just hooked up the existing hose I had....I reconnected the return line that was plugged since I had the electric pump on it. Maybe in the future I will tack weld that fuel filter bracket to the frame, but for now seems like overkill.

Got the valve covers painted....and the only thing it seems rarer than this valve cover set is the gaskets! Napa, autozone, advance, nor O'Reily's had the gaskets in stock. I had to order them and hopefully they will be here today. What a pain in the ass! Got them painted. I have to sand a couple of spots where I got some overspray, but I think they look pretty good.


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1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #120 of 409 Old 04-02-2013, 02:33 PM
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Re: Converting to EFI. Finally...A little help

The fuel filter bracket goes in place of the fuel pump. You will likely need to make some sort of block off plate to go between though.

Yukon: The daily driver
Tha toy: 1973 Datsun 240z 12.71 @115
Tha other Toy: 1923 T-Bucket
Another Toy: 1987 Buick Skyhawk
Typhony Old set-up: 1985 GMC Jimmy. 3.2L Turbocharged/Intercooled hybrid. 13.873 @ 99.08 Currently being reconstructed.


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post #121 of 409 Old 04-02-2013, 03:55 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

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The fuel filter bracket goes in place of the fuel pump. You will likely need to make some sort of block off plate to go between though.
Correctamundo! But...my engine is not a 2.8. My engine is an HT3.4. There is no provision for the mechanical fuel pump so there is nothing to block. In fact, this place on the block I pictured? Doesn't exist on this 3.4 casting so there is nowhere to mount that silly bracket. I could be wrong....but I didn't see or feel the mounting holes...The truck I pulled this from was an 87....it appeared to have the place for the mechanical fuel pump but cast over...no block plate. My 91 had the fuel pump on the frame rail (2.8), so it appears to me that at some point between 88 and 91 they removed this place from the block and mounted the fuel filter in a more reasonable spot so you don't have to disassemble so much crap to get to it. Anybody can confirm this design change? It's a moot point anyway, because I just ran the lines the way that made sense to me, so I'm not going to use that bracket as I don't really need it. I can also change the filter in about 20 seconds. The way I routed the lines also keeps fuel away from the exhaust which makes me breathe easier anyway



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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post #122 of 409 Old 04-02-2013, 05:42 PM
Should've had a V8.
 
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Re: Converting to EFI. Finally...A little help

Going back to that about the JY, you're not alone haha. I love going to the yard, was just there yesterday.

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post #123 of 409 Old 04-02-2013, 06:19 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

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Going back to that about the JY, you're not alone haha. I love going to the yard, was just there yesterday.
I find it very relaxing...And neat to see some of the stuff in there....and the jury rigged mess

Hey man, would you look and see where your fuel filter is on your 92? I bet it's on the frame rail on the driver's side. And see if behind the power steering pump if there is a place where it LOOKS like that picture I posted? Curiosity is getting me on this one. If it's different then we can better assume the age of a block. I'm sure there is some scientific gobbledegook to determine that too with casting numbers, but I'd like to see.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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post #124 of 409 Old 04-02-2013, 07:23 PM
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Re: Converting to EFI. Finally...A little help

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Correctamundo! But...my engine is not a 2.8. My engine is an HT3.4. There is no provision for the mechanical fuel pump so there is nothing to block. In fact, this place on the block I pictured? Doesn't exist on this 3.4 casting so there is nowhere to mount that silly bracket. I could be wrong....but I didn't see or feel the mounting holes...The truck I pulled this from was an 87....it appeared to have the place for the mechanical fuel pump but cast over...no block plate. My 91 had the fuel pump on the frame rail (2.8), so it appears to me that at some point between 88 and 91 they removed this place from the block and mounted the fuel filter in a more reasonable spot so you don't have to disassemble so much crap to get to it. Anybody can confirm this design change? It's a moot point anyway, because I just ran the lines the way that made sense to me, so I'm not going to use that bracket as I don't really need it. I can also change the filter in about 20 seconds. The way I routed the lines also keeps fuel away from the exhaust which makes me breathe easier anyway
It appears that you're correct there:



I was under the impression you had a 2.8L. I missed any mention of it being a 3.4.

Yukon: The daily driver
Tha toy: 1973 Datsun 240z 12.71 @115
Tha other Toy: 1923 T-Bucket
Another Toy: 1987 Buick Skyhawk
Typhony Old set-up: 1985 GMC Jimmy. 3.2L Turbocharged/Intercooled hybrid. 13.873 @ 99.08 Currently being reconstructed.


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post #125 of 409 Old 04-02-2013, 07:45 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Quote:
Originally Posted by The_Raven View Post
It appears that you're correct there:



I was under the impression you had a 2.8L. I missed any mention of it being a 3.4.
Yup. Wonder when they quit casting that place on the block? Not that it matters really, but I am curious....

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1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #126 of 409 Old 04-02-2013, 08:09 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Did a little tonight. Have to go check on a friend that isn't feeling well, so project must wait. But I went ahead and put the valve covers on. Cool. Getting down to the nitty gritty now. I have to install my fuel pump, remove the old fuel pump setup, put my cut off switch on the oil filter adapter, run my start signal wire, install my knock sensor, hookup all those wires and the ECM, install the distributor, coil and EGR....oh yeah, and locate a new breather stud because the 2.8 TBI uses a LARGER stud that the 4.3....go figure. My old one that was on my 4bbl threads in, but unfortunately it's straight and that's not going to work. I suppose worse comes to worse I can make me one out of a threaded rod (which is what I did for the 4bbl). I guess after all that I will turn the key and pray....wish me luck!


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1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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Re: Converting to EFI. Finally...A little help

I don't read sigs anymore, many are not updated, and I've been on forums for over 15 years, I don't remember everything I've read.

Yukon: The daily driver
Tha toy: 1973 Datsun 240z 12.71 @115
Tha other Toy: 1923 T-Bucket
Another Toy: 1987 Buick Skyhawk
Typhony Old set-up: 1985 GMC Jimmy. 3.2L Turbocharged/Intercooled hybrid. 13.873 @ 99.08 Currently being reconstructed.


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post #128 of 409 Old 04-02-2013, 08:36 PM
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Re: Converting to EFI. Finally...A little help

yup, frame rail on the driver side. Remember seein it when i ran a brake line.

as for the casting on the block, I'll try and check when i get out of work. It's dark though so it may be a bit before i can confirm it.

EDIT: I think I'm grabbin a set of those valve covers friday haha.

FS: First Gen brake lights, 4.3 TB, 2.8 intake manifold, 2.8 air cleaner housing, heater core shroud, first gen sun visor.
Click the name for the thread.
1992 s10 "Old and Un-faithful" 3.4L RIP
1995 s10 "What the hell, it runs?" 2.2L Long Bed RIP
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post #129 of 409 Old 04-02-2013, 08:56 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

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I don't read sigs anymore, many are not updated, and I've been on forums for over 15 years, I don't remember everything I've read.

Just giving you a hard time man... Hell, I guess I have been on the forum almost 10

Quote:
Originally Posted by s10_2.8 View Post
yup, frame rail on the driver side. Remember seein it when i ran a brake line.

as for the casting on the block, I'll try and check when i get out of work. It's dark though so it may be a bit before i can confirm it.

EDIT: I think I'm grabbin a set of those valve covers friday haha.

Good luck on that dude...I have been looking for years.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #130 of 409 Old 04-02-2013, 09:10 PM
Should've had a V8.
 
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Re: Converting to EFI. Finally...A little help

I know where there is a set sitting:P I got pics of them somewhere in my build thread

FS: First Gen brake lights, 4.3 TB, 2.8 intake manifold, 2.8 air cleaner housing, heater core shroud, first gen sun visor.
Click the name for the thread.
1992 s10 "Old and Un-faithful" 3.4L RIP
1995 s10 "What the hell, it runs?" 2.2L Long Bed RIP
1996 Saturn SL2, 2000 SL TWIN PILES OF CRAP
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post #131 of 409 Old 04-02-2013, 11:34 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

I highly recommend you grab them while you can...



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #132 of 409 Old 04-02-2013, 11:37 PM
Should've had a V8.
 
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Re: Converting to EFI. Finally...A little help

Haha I'm on it. Getting a digital display too if they still have it..

BTW I checked my motor, I didn't see any spots like that, unless the exhaust manifolds were in the way.

FS: First Gen brake lights, 4.3 TB, 2.8 intake manifold, 2.8 air cleaner housing, heater core shroud, first gen sun visor.
Click the name for the thread.
1992 s10 "Old and Un-faithful" 3.4L RIP
1995 s10 "What the hell, it runs?" 2.2L Long Bed RIP
1996 Saturn SL2, 2000 SL TWIN PILES OF CRAP
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post #133 of 409 Old 04-03-2013, 12:01 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

It should be pretty obvious if it is there. So judging by my 91 being in the same place it likely didn't have that place on the block. So castings stopped that somewhere between 88-90 I guess.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #134 of 409 Old 04-03-2013, 12:07 AM
Should've had a V8.
 
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Re: Converting to EFI. Finally...A little help

I'll double check in the sunlight, but from what I saw it wasn't there.

FS: First Gen brake lights, 4.3 TB, 2.8 intake manifold, 2.8 air cleaner housing, heater core shroud, first gen sun visor.
Click the name for the thread.
1992 s10 "Old and Un-faithful" 3.4L RIP
1995 s10 "What the hell, it runs?" 2.2L Long Bed RIP
1996 Saturn SL2, 2000 SL TWIN PILES OF CRAP
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post #135 of 409 Old 04-03-2013, 12:36 AM
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Re: Converting to EFI. Finally...A little help

All EFI 2.8ls that I know of had the fuel filter attached to the engine, behind the power steering pump where a mechanical fuel pump would have been located.

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Tha toy: 1973 Datsun 240z 12.71 @115
Tha other Toy: 1923 T-Bucket
Another Toy: 1987 Buick Skyhawk
Typhony Old set-up: 1985 GMC Jimmy. 3.2L Turbocharged/Intercooled hybrid. 13.873 @ 99.08 Currently being reconstructed.


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post #136 of 409 Old 04-03-2013, 07:57 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

Quote:
Originally Posted by The_Raven View Post
All EFI 2.8ls that I know of had the fuel filter attached to the engine, behind the power steering pump where a mechanical fuel pump would have been located.
Now I am going on a 17 year old memory, but my 91 was on the driver's side frame rail. I also recall my friend Brad changing one on his 93 and it was there too. Reason I also remember is when I changed the filter on my 86 Jimmy was that I was like "what??" Where the hell is the filter?? I was kind of shocked to find it not present on the rail like my 91. I'm gonna check this theory out further when I go to the yard again next.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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post #137 of 409 Old 04-03-2013, 03:32 PM
Should've had a V8.
 
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Re: Converting to EFI. Finally...A little help

mines definitely on the frame rail too. I didn't see that mounting spot on the block when I looked again this morning either.

FS: First Gen brake lights, 4.3 TB, 2.8 intake manifold, 2.8 air cleaner housing, heater core shroud, first gen sun visor.
Click the name for the thread.
1992 s10 "Old and Un-faithful" 3.4L RIP
1995 s10 "What the hell, it runs?" 2.2L Long Bed RIP
1996 Saturn SL2, 2000 SL TWIN PILES OF CRAP
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post #138 of 409 Old 04-03-2013, 05:52 PM
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Re: Converting to EFI. Finally...A little help

my 91 had the filter on the engine and my 92 was on the frame rail.

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post #139 of 409 Old 04-03-2013, 10:49 PM
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Re: Converting to EFI. Finally...A little help

I am running the fuel filter before the fuel pump, then it's pretty much straight through to the throttle body. You might want the filter before the pump anyway.

I've finally edited the AMRW bin file in the prom to turn off the EGR and the 32 error code. I also changed the Base Pulse Width of the injectors based on the engine, injector size and fuel pressure.

Now to hook up the laptop and record the data on the drive to work.

1985 GMC S-15 Gypsy ext cab.
3.4l, Edelbrock intake, a 4.3l throttle body controlled by an '88 TBI ECM. 700R4 with 3.73 rear. Real time tuning using a CF-30 Toughbook with a Moates Ostrich 2 emulator.
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post #140 of 409 Old 04-04-2013, 08:20 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

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I am running the fuel filter before the fuel pump, then it's pretty much straight through to the throttle body. You might want the filter before the pump anyway.

I've finally edited the AMRW bin file in the prom to turn off the EGR and the 32 error code. I also changed the Base Pulse Width of the injectors based on the engine, injector size and fuel pressure.

Now to hook up the laptop and record the data on the drive to work.
I actually have two filters on my system. One is before the pump which filters down to 10 microns. Have it there to make sure that only clean gas hits the pump from the tank that is almost 30 years old. The other is just a G3 Fram at the carb (TBI now) for extra insurance...Plus it is clear so I can see what's shaking there.

Let us know how the adjustments worked out.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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post #141 of 409 Old 04-04-2013, 08:21 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

Quote:
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my 91 had the filter on the engine and my 92 was on the frame rail.
Yeah...starting to believe the castings are different on these early 90s units. I wonder why they changed that?



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
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I had to cut my nut in half .
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post #142 of 409 Old 04-04-2013, 04:31 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Hey guys. Which wire connector goes to which injector? Does it matter? Thanks



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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post #143 of 409 Old 04-04-2013, 06:35 PM
Should've had a V8.
 
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Re: Converting to EFI. Finally...A little help

do you have multiple colored wires? I'll look at mine in like an hour. pretty sure mine are yellow blue green and red.

FS: First Gen brake lights, 4.3 TB, 2.8 intake manifold, 2.8 air cleaner housing, heater core shroud, first gen sun visor.
Click the name for the thread.
1992 s10 "Old and Un-faithful" 3.4L RIP
1995 s10 "What the hell, it runs?" 2.2L Long Bed RIP
1996 Saturn SL2, 2000 SL TWIN PILES OF CRAP
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post #144 of 409 Old 04-04-2013, 07:58 PM
Should've had a V8.
 
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Re: Converting to EFI. Finally...A little help

From left to right they are blue, red, green, yellow.

FS: First Gen brake lights, 4.3 TB, 2.8 intake manifold, 2.8 air cleaner housing, heater core shroud, first gen sun visor.
Click the name for the thread.
1992 s10 "Old and Un-faithful" 3.4L RIP
1995 s10 "What the hell, it runs?" 2.2L Long Bed RIP
1996 Saturn SL2, 2000 SL TWIN PILES OF CRAP
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post #145 of 409 Old 04-04-2013, 09:48 PM Thread Starter
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Re: Converting to EFI. Finally...A little help

Thanks for looking bro. Talked to damanx too. He said it didn't matter anyway.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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post #146 of 409 Old 04-04-2013, 10:12 PM
Should've had a V8.
 
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Re: Converting to EFI. Finally...A little help

no prob

FS: First Gen brake lights, 4.3 TB, 2.8 intake manifold, 2.8 air cleaner housing, heater core shroud, first gen sun visor.
Click the name for the thread.
1992 s10 "Old and Un-faithful" 3.4L RIP
1995 s10 "What the hell, it runs?" 2.2L Long Bed RIP
1996 Saturn SL2, 2000 SL TWIN PILES OF CRAP
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post #147 of 409 Old 04-05-2013, 10:35 PM
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Re: Converting to EFI. Finally...A little help

Just for clarification:

One wire from each connector, connect together and then to +12vdc though ignition.

The other two, one for each injector,connects to the corresponding color wire from the ecm.

1985 GMC S-15 Gypsy ext cab.
3.4l, Edelbrock intake, a 4.3l throttle body controlled by an '88 TBI ECM. 700R4 with 3.73 rear. Real time tuning using a CF-30 Toughbook with a Moates Ostrich 2 emulator.
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post #148 of 409 Old 04-06-2013, 03:40 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

I got a good bit done today...I mounted with the new fuel pump, installed the distributor, figuring out where every thing goes and how. I put the stock fuel cutoff switch. Oh yeah, getting that fuel bracket wasn't a waste after all. My fancy pre fuel pump filter I have noticed was leaking just a little. Noticed the smell lately. Tell you what though. I decided to use that bracket and a stock filter. Worked out.good too. Getting closer now. a



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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post #149 of 409 Old 04-06-2013, 03:46 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

Oh yeah, I also decided that I hate that coil Bracket... So I modified the 84 one to hold coil ...now I just have to figure out where to mount the egr electronics.



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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post #150 of 409 Old 04-06-2013, 10:05 AM Thread Starter
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Re: Converting to EFI. Finally...A little help

Anyone help here? Wanted to make sure I am right on this....Off the fuel pump relay...that ONE wire goes to the pump? Doesn't look very robust. Should I fuse that wire? Or a fuse link? Not only that, what is the purpose of the fuel pump "prime" locaton in the schematics? What is that?



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Flowmaster, shift kit, e-fan.
The S-5 trailer-Half a 1st Gen LWB S-10


EFI swap https://www.s10forum.com/forum/f106/...e-help-513616/

My build thread (3.4L)https://www.s10forum.com/forum/f106/...stions-427168/
Quote:
Originally Posted by Racer_X View Post
I had to cut my nut in half .
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