Fuel mileage test ... 17!!? - S-10 Forum
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post #1 of 37 Old 07-09-2019, 11:09 AM Thread Starter
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Fuel mileage test ... 17!!?

Be honest, what fuel mileage are you getting?

By honest - I mean:
Top off your tank - let the Gas pump kick off.
Write down your mileage.
Go drive around.
After about half a tank, go back and top-off again.
Subtract the original mileage from your current mileage.
Now divide that by the number of gallons it took to top off the tank the second time.
That is your honest fuel mileage for the way you drive.

I got 17 mpg !! ...work needs to be done.

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post #2 of 37 Old 07-09-2019, 12:14 PM
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Re: Fuel mileage test ... 17!!?

here are mine, till the truck overheated


21.4 mpg average


date / miles driven / gallons / mpg / gas price / city % driven


6/8/19 286.00 13.098 21.84 2.079 100%
5/23/19 304.00 12.652 24.03 2.259 95%
5/10/19 239.00 12.316 19.41 2.419 100%
4/27/19 260.00 12.899 20.16 2.499 35%


I use fuelly.com

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post #3 of 37 Old 07-09-2019, 07:20 PM
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Re: Fuel mileage test ... 17!!?

That wouldn't be crazy if it was all city driving on E85.




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post #4 of 37 Old 07-11-2019, 03:24 PM Thread Starter
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Re: Fuel mileage test ... 17!!?

Thanks, SuperJ, that beats the wiki - list for the 2.2. But I'm thinking we ought to be able to do better. Sorry to hear about your over-heat problem, are you fix'n it or ....?

Manbearpig, we can't keep our foot in it all the time. I read some where that the number of pistons an engine has has something to do with what RPM gives the best fuel milage.

If we are not getting good fuel mileage - why drive a 4- banger?
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post #5 of 37 Old 07-12-2019, 12:09 PM
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Re: Fuel mileage test ... 17!!?

I think we should be able to do better also. I want to try and get around 30 in town but it will take some work on my end


I am indeed fixing her. the head was supposed to be at the machine shop already but I am behind schedule on it. I have the new gasket and head bolt set so once I get the head over there, the guy told me its a one day deal, if I drop it off first thing in the morning, I will have it back that afternoon.

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post #6 of 37 Old 07-12-2019, 02:26 PM
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Re: Fuel mileage test ... 17!!?

The EPA says 19/25 for regular gasoline and 14/18 for E85.


Using air conditioning will kill the gas mileage too.




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post #7 of 37 Old 07-12-2019, 05:18 PM Thread Starter
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Re: Fuel mileage test ... 17!!?

The EPA says 19/25 for regular gasoline .... Using air conditioning will kill the gas mileage too.

True, true. and that ethanol that they add to gas, knocks the mileage down as well.
But I'm going to work on my 2.2 as well. First off, let it breath better - that stock air filter -air flow is ridiculous. Next, check my exhaust to make sure it is not causing excess back pressure.

Manbearpig, your name reminds me of Davy Crockett. Davy always said that he was "half man, half horse, and half alligator ... and just a touch of snapping turtle."

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post #8 of 37 Old 07-12-2019, 05:45 PM
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Re: Fuel mileage test ... 17!!?

I haven't noticed any difference in milage with 10% ethanol that's added.

How did you determine that the air flow is ridiculous? Don't make it worse with a hot air intake.

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post #9 of 37 Old 07-12-2019, 06:07 PM
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Re: Fuel mileage test ... 17!!?

"Regular gasoline" is gasoline/10% ethanol. Has been for a long time now.




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post #10 of 37 Old 07-13-2019, 04:38 PM Thread Starter
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Re: Fuel mileage test ... 17!!?

"How did you determine that the air flow is ridiculous?"

I knew someone was going to ask that question .... Here is a rough drawing of my 01 intake.
What a piece of automobile engineering. I wonder why they didn't use it on the Corvette? Now if they had put the battery on the other side, it would be easier to run a cool-air induction.

Cold air intakes, I'm thinking that you should think outside the box.
The box being the engine compartment. Junkyard hoods are cheap, and there are several scoops available. You could swap on a junkyard hood, cut a hole in it, add a scoop, and have cool air with almost no restrictions. If you ever want to go back to stock, just swap your old hood back.
Just an idea to kick around ...
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post #11 of 37 Old 07-13-2019, 05:25 PM
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Re: Fuel mileage test ... 17!!?

Using scoops on a stock hood has it's own set of issues if not done correctly. My '83 Z28 had vacuum operated scoops that fed the air cleaner. It was recalled because the rain/water was causing all kinds of problems. I'm not saying a CAI can't be done, but most guys buy the $50 special from eBay, then go on to tell us how much faster it is.

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post #12 of 37 Old 07-13-2019, 07:53 PM
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Re: Fuel mileage test ... 17!!?

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Using scoops on a stock hood has it's own set of issues if not done correctly. My '83 Z28 had vacuum operated scoops that fed the air cleaner. It was recalled because the rain/water was causing all kinds of problems. I'm not saying a CAI can't be done, but most guys buy the $50 special from eBay, then go on to tell us how much faster it is.

Too Much Horsepower is ALMOST ENOUGH!
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post #13 of 37 Old 07-13-2019, 07:57 PM
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Re: Fuel mileage test ... 17!!?

My truck is running so much better now with the new Y pips and high flow cats that I'm having a hard time resisting stepping on the fun peddle. I'm going to fill up tomorrow and try to behave for a few days and see what it will do.

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post #14 of 37 Old 07-13-2019, 10:14 PM
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Re: Fuel mileage test ... 17!!?

The 2.2L intake was designed to be quiet. It functions fine for what it is. Changing it is not going to increase your gas mileage. Trust me, my engine bay is far from stock.



Older picture, I wish it was still this clean.

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post #15 of 37 Old 07-14-2019, 10:42 AM Thread Starter
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Re: Fuel mileage test ... 17!!?

Manbearpig, That is an awesome engine compartment. You did a great job.
"The 2.2L intake was designed to be quiet." ---- If it was designed to be quiet, why does it have that resonator thingee hanging of of it, like a huge hemorrhoid?
Are you saying that a 2.2 L 4 cyl. has more of an intake noise problem than a 5.7 L V8 in a Corvette ?

I will agree, it functions fine for what it was designed for ... "Why is there so much plastic in my engine compartment? ... So that I can't see how tiny my engine is..."
But adding a custom air intake is just part of the larger plan. Intake is only half the story.
"My truck is running so much better now with the new Y pips and high flow cats"
(What Goes2fast said)
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post #16 of 37 Old 07-14-2019, 11:57 AM
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Re: Fuel mileage test ... 17!!?

Well, people prefer the sound of a V8 in a sports car over a raucous little 4 banger in a pickup truck. They also had the extra room under the hood to add such things, as the Cavalier with the same engine does not have much in the way of resonators.



I'll be swapping to a Cavalier intake manifold soon and have a Quad4 airbox that I'm going to mount where the battery goes.



The K&N intake I have now isn't worth the money, I've had it for about 12 years now but the mounting hardware sucks (rarely stays tight), where it mounts to the fuse block bracket will most like break from the extra vibrations, the heat shield seal came apart while installing it (had to glue it back together). I'm glad I got a big discount on it at the time. It did make a small difference in the top end, but the adding the Quad4 throttle body helped more (though it is pretty noisy, at certain throttle positions, you can really hear it sucking air in). I have no delusions that this truck will ever be fast, but it is pretty fun to wind up.




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post #17 of 37 Old 07-14-2019, 12:24 PM
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Re: Fuel mileage test ... 17!!?

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Manbearpig, That is an awesome engine compartment. You did a great job.
"The 2.2L intake was designed to be quiet." ---- If it was designed to be quiet, why does it have that resonator thingee hanging of of it, like a huge hemorrhoid?
Are you saying that a 2.2 L 4 cyl. has more of an intake noise problem than a 5.7 L V8 in a Corvette ?

I will agree, it functions fine for what it was designed for ... "Why is there so much plastic in my engine compartment? ... So that I can't see how tiny my engine is..."
But adding a custom air intake is just part of the larger plan. Intake is only half the story.
"My truck is running so much better now with the new Y pips and high flow cats"
(What Goes2fast said)
But your 2.2 doesn't have a Y pipe.

Too Much Horsepower is ALMOST ENOUGH!
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post #18 of 37 Old 07-14-2019, 06:24 PM
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That quad4 tb sounds like the best inexpensive upgrade someone can do to our little engine. Then the undedrive pulley, maybe.

And depending on you gear ratio, maybe change out your diff to another ratio. I say that since most people don't know how to do backlash, gear patterns, and endplay on gears. My truck has stock 3.73s out back so it can be pretty peppy, if a person wants to spin the tires everywhere but it also allows for good city mileage

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post #19 of 37 Old 07-14-2019, 09:21 PM
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Re: Fuel mileage test ... 17!!?

My daughter has a 1993 4x4 Blazer 4dr with the CPI engine and straight piped exhaust. It uses 30x9.50R15 BFG mud radials and has the 3.42 gears. All highway driving last weekend she got 19.8 mpg with the air on. Around town she has been getting 16.4-16.8 mpg going to work with the air on.
My 2002 crewcab S-10 with 3.73 gears and 235/75R15 BFG All terrains got 19.4 mpg on pure highway driving but drops to 13.4-15.6 mpg mixed driving. Both use 87 octane with 10% ethanol and get two clicks on the pump after the first time it kicks off.

We live in Illinois and the fuel tax just doubled but the roads still suck!

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post #20 of 37 Old 07-15-2019, 12:42 AM
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Re: Fuel mileage test ... 17!!?

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The 2.2L intake was designed to be quiet. It functions fine for what it is. Changing it is not going to increase your gas mileage. Trust me, my engine bay is far from stock.



Older picture, I wish it was still this clean.


Fancy!!

I keep wanting to put one of those little gems into a 2 door blazer,but I just can’t find a good body. popping the hood and seeing that tiny little engine without all the BS around it like that pic would totally be worth it....even if it would be almost undrivable. that’s the cleanest engine bay I think I’ve ever seen,and it doesn’t look jacked like all the others. Very impressive! I need AC&P/S too much tho..looks nice without it tho. What is that idler pulley from? Blown away that the faux water pump/fan pulley is gone too. Wow!

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post #21 of 37 Old 07-15-2019, 01:03 PM Thread Starter
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Re: Fuel mileage test ... 17!!?

My 2.2 doesn't have a Y pipe .... yet.

Seriously, I've been thinking, (hum, thought I smelled burning hair) one way to get less restriction on my exhaust would be to find someone who is parting out an S10 with a 4.3 and get the exhaust system, from cat to tailpipe. Seems to me the 4.3 system would have a higher flow, but still be in range for the cat to heat up and do its job.
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post #22 of 37 Old 07-15-2019, 04:21 PM
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Re: Fuel mileage test ... 17!!?

My 4.3 had 2 cats welded to the Y pipe from the factory.

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post #23 of 37 Old 07-15-2019, 07:31 PM
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Re: Fuel mileage test ... 17!!?

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What is that idler pulley from?

Thanks! I don't like jacked stuff, especially since I still drive it everyday. Jacked stuff seems to just sit there (jimburban, anyone?)


The pulley is a Gates 36239. I basically went through a parts listing until I found one with usable specifications.




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post #24 of 37 Old 07-15-2019, 07:52 PM
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Re: Fuel mileage test ... 17!!?

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My 2.2 doesn't have a Y pipe .... yet.

Seriously, I've been thinking, (hum, thought I smelled burning hair) one way to get less restriction on my exhaust would be to find someone who is parting out an S10 with a 4.3 and get the exhaust system, from cat to tailpipe. Seems to me the 4.3 system would have a higher flow, but still be in range for the cat to heat up and do its job.
They’re different,but not for the reason you’re hoping. The 4.3 trucks have a different flange. Although the exhaust is a slightly larger diameter,I’m pretty sure the tailpipes are the same. I swapped a truck from 2.2 to 4.3 even down to the exhaust,and laying next to eachother the differences are slight.

The truck has way more pep!! But I’m pretty sure it’s from the 4.3!



not the exhaust!
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post #25 of 37 Old 07-16-2019, 01:58 PM
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I did it for 2 months and got 15-17 with mostly city driving & a daily interstate run at 75mph for 4miles. Needless to say I was disappointed. Checked plugs &#1 plug was the one a.c. Delco!!! The electrode was barely viewable! Gonna go through a few tanks again n see what I get now. I will re-post here to let y'all know when finished.
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post #26 of 37 Old 07-16-2019, 03:49 PM
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Re: Fuel mileage test ... 17!!?

OP, is your truck an automatic? or 5-sp?

Mine is a 98 ext cab 5-sp. Last weekend I drove 400 miles, 200 on interstate at 70, 200 miles thru the mountains (2000 ft climb) at 40 - 50. I averaged 27.2 mpg using your methodology to calculate. I had the A/C on except on the big hills.

Around town, heavy suburban traffic I regularly get at least 22 mpg.

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post #27 of 37 Old 07-16-2019, 09:31 PM
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Re: Fuel mileage test ... 17!!?

Quote:
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My daughter has a 1993 4x4 Blazer 4dr with the CPI engine and straight piped exhaust. It uses 30x9.50R15 BFG mud radials and has the 3.42 gears. All highway driving last weekend she got 19.8 mpg with the air on. Around town she has been getting 16.4-16.8 mpg going to work with the air on.
My 2002 crewcab S-10 with 3.73 gears and 235/75R15 BFG All terrains got 19.4 mpg on pure highway driving but drops to 13.4-15.6 mpg mixed driving. Both use 87 octane with 10% ethanol and get two clicks on the pump after the first time it kicks off.

We live in Illinois and the fuel tax just doubled but the roads still suck!
You are going 7% further than your odometer says you are with those tires (unless you've tuned the PCM for the larger diameter tires). So when you see 100 miles on your odometer, you've gone 107(.33) actual miles. That also makes your actual miles per gallon higher. If you get 15 (odometer) miles per gallon with those tires, you're getting about 16.1 actual miles per gallon.

Every machine is a smoke machine if you operate it wrong enough.
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post #28 of 37 Old 07-16-2019, 09:48 PM
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Re: Fuel mileage test ... 17!!?

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You are going 7% further than your odometer says you are with those tires (unless you've tuned the PCM for the larger diameter tires). So when you see 100 miles on your odometer, you've gone 107(.33) actual miles. That also makes your actual miles per gallon higher. If you get 15 (odometer) miles per gallon with those tires, you're getting about 16.1 actual miles per gallon.
This is my factory tire size on a bone stock truck. Are the BFG tires that much taller in the same size? Or is it because they are LT and the originals were P size?

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post #29 of 37 Old 07-17-2019, 06:59 AM
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Re: Fuel mileage test ... 17!!?

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This is my factory tire size on a bone stock truck. Are the BFG tires that much taller in the same size? Or is it because they are LT and the originals were P size?
OK. I missed the Crew Cab part. If that's what's on the sticker on your door jamb, then that's what your speedo is tuned for.

I was thinking of the "normal" S10s. Most of them came on 205/75R15 tires (typically around 770 revolutions per mile) or 215/70R15 (typically around 775 revolutions per mile). 235/75R15 (typically around 720 revolutions per mile) on those trucks introduces a roughly seven percent error in the speedo and the odometer.

The All Terrain tires can be slightly oversized (maybe 715 revolutions per mile) when compared with more conventional tires, but that's not really significant in the speed and odo readings (<0.5%).

Every machine is a smoke machine if you operate it wrong enough.
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post #30 of 37 Old 07-17-2019, 02:37 PM Thread Starter
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Re: Fuel mileage test ... 17!!?

The 4.3 trucks have a different flange.

I have a cutting torch and a welder ... but I'd probably just take it to my friendly neighborhood muffler shop and tell him to "Sic em".The pipes are probably about the same, but most of the back pressure is probably going to be in the cat. One thing about it, it won't make the fuel mileage any worse.

My six passenger, four thousand pound, V6 , 3.8L, Chrysler mini-van gets better gas mileage. What is wrong with this picture?
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post #31 of 37 Old 07-17-2019, 05:41 PM
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Re: Fuel mileage test ... 17!!?

Idk,Iíd think twice about altering a 2.2 exhaust in any way. To be 100% honest they sound like crap modified. Just gutting the cat they sound like thereís a bell loose inside the exhaust...Iíve purchased at least a half dozen 2.2 trucks with hollow cars,and they sound awful once they get running...Iíve bought one with duel outlets,..sounded like crap.

I tend to save the factory cat back systems,catalytic converters,and down pipes off the trucks I part out,because the next one will probably have some level of Obama engineering going on.

The only real fix for your truck is replace it with a truck that has a 4.3. Sure,the fuel economy not be better,BUT merging into traffic wonít be Russian roulette anymore.
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post #32 of 37 Old 07-18-2019, 12:28 PM Thread Starter
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Re: Fuel mileage test ... 17!!?

BravadaX:, right now I'm just experimenting. I tend to save the stock parts so that I can swap back if I don't like what I get.
But one sure way to get better mpg, is to pull out the 2.2 and drop in a 2.3 from a FORD Ranger !!!

Actually this is a spunky little truck, it has plenty of get-up and go. I'm beginning to wonder if its ECM has been "tuned" for better performance, hence less gas mileage. Is that possible?

Robs10s10: Spark plugs, some injector cleaner in the gas tank, clean filters, an oil & oil filter change, etc. show your truck some love, man.
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post #33 of 37 Old 07-18-2019, 01:08 PM
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Re: Fuel mileage test ... 17!!?

Fuel economy often degrades with time because of this: And no, I'm not shilling for that outfit.










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post #34 of 37 Old 07-18-2019, 01:48 PM
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Re: Fuel mileage test ... 17!!?

what the heck? this reposted my original post when I tried to answer


none of the rangers or mazdas I have ever owned got better mileage then the s10/Sonoma 2.2. and I love rangers

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post #35 of 37 Old 07-18-2019, 03:48 PM
8/31/1897 - 4/29/2004
 
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Join Date: Jun 2010
Location: Destin,Florida
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Re: Fuel mileage test ... 17!!?

Idk,Iíve had 3 rangers,and 4 Tacomas...they where all slow and not very good on gas.

Thereís an RWD Ecotech with a manual option in the last generation amigo? I did some work on one long ago,and thought,...hmmm,..that looks like an easy swap into an s10. Then again,if I owned the amingo id probably drive it as is,because the top comes off.

Quote:
Originally Posted by mostizzle View Post
I turned mine into an Oldsmobile, bitches love Oldsmobiles.
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post #36 of 37 Old 07-18-2019, 06:34 PM
time to get cereal
 
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Location: stl
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Re: Fuel mileage test ... 17!!?

I would think the later Rangers with the Duratec engine would be pretty zippy around town. That thing loves to rev.



Oh, and factory 6 speed, rack & pinion, and none of that I-beam shiz.




WANTED: 98+ radio delete panel.
Looking for a 94-95 2.2L 5-speed Extended cab, preferably white.
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post #37 of 37 Old 07-20-2019, 08:29 AM
the new guy
 
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Oh ya, some of the rangers are fun and feel quick. I agree there.

the joys of living on the ocean. sun, ocean breezes, non-stop rust
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