2.8 problems - Page 2 - S-10 Forum
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post #51 of 56 Old 07-01-2015, 02:53 AM
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Re: 2.8 problems

Use the 3.4 flex plate and yes, the motor will bolt right up to the tranny.

If I recall correctly, there isn't a provision on the 3.4 block to accomodate the hydraulics for a manual transmission.

I've also done this conversion, along with the TBI.

Jimmy seems to forget that.


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 #52 of 56 Old 07-06-2015, 12:17 PM Thread Starter
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Re: 2.8 problems

So I through some 20w/50 in it. Does run a little better, still shitty going slow, jerky sometimes. But this morning I pulled at o2 rich code, so idk what's causing that


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post #53 of 56 Old 07-07-2015, 08:26 PM Thread Starter
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2.8 problems

So looking at my injectors. Both of them are Misting fine, but they both look like they have a little bit of a drip to them. They don't trip when you turn the truck off though. But what I'm assuming is that below a certain rpm the injectors are flowing a little to much, and once engine speed increases it can handle the extra a little better. But is that possible while only throwing a rich code once? Basically how much slack does the computer give before it throws a code for to much or to little?


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post #54 of 56 Old 07-09-2015, 12:14 PM
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Re: 2.8 problems

Quote:
Originally Posted by damanx View Post
Use the 3.4 flex plate and yes, the motor will bolt right up to the tranny.

If I recall correctly, there isn't a provision on the 3.4 block to accomodate the hydraulics for a manual transmission.

I've also done this conversion, along with the TBI.

Jimmy seems to forget that.
There isn't a boss for the cable on the 82-83ish. The hydraulic will work fine on the 3.4



1984 xcab s-10 3.4L GM crate engine 91 S10 TBI swap w bored intake, Edelbrock headers. 2" Rough Country Lift. Custom exhaust, shift kit, e-fan.


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 #55 of 56 Old 07-19-2015, 12:06 PM Thread Starter
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Re: 2.8 problems

Fuel injectors are bad. Ones shot spitting fuel out the top and the other one is dripping


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post #56 of 56 Old 07-19-2015, 04:33 PM Thread Starter
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Re: 2.8 problems

So I took the tbi apart to clean it. And although I've heard that our trucks don't come with adjustable tps, mine is adjustable. So what should the meter read when I've got it set in the right spot? Also drilled out the cap for my idle set screw


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