Fuel econmomy tips? - JeepForum.com

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post #1 of 27 Old 10-17-2013, 12:41 AM Thread Starter
Bighaydn
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Fuel econmomy tips?

I've got a 94 wrangler it's got a 2 inch shackle 2 inch body and 4 inch suspension lift. I'm rockin 35s and I've got 4.10 gears and a locker. I get bad like real bad mileage which is understandable. But I feel it should be better then 12-13. I've got the 4.0 HO. I changed the plugs, wires, cap, rotor, oil/oil filter, fuel filter, and cleaned air filter too. I know my tps censor is bad but I haven't got a new one yet.


I'm new to jeeps but I figured doing all that and having the new gears would improve it somewhat. But it didn't. Would replacing my sensor improve it? Or is this just something I've gotta deal with. Is there anything else I can do to improve it?

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post #2 of 27 Old 10-17-2013, 12:49 AM Thread Starter
Bighaydn
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Also my speedometer is off so that 12-13 is probably lower since I used the trip meter to figure my mpg
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post #3 of 27 Old 10-17-2013, 05:08 AM
Jeepsr4me
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12-13 is pretty good for that set up.
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post #4 of 27 Old 10-17-2013, 05:18 AM
vadslram
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What is your driving style?
That is the biggest variable in milage.
Heavier foot on take-off. Gassing until last second then braking for stops. Pushing the rig past the most efficient cruise speed.

You can't hyper mile a shoebox on wheels but you can stretch the possible. I notice that highway at 50-55 I can get ~18 mpg but when the speed limit is 65 and I try to stay with traffic (65-70) I get around 12 mpg.
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post #5 of 27 Old 10-17-2013, 06:41 AM
Old4X
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All the mods on your Jeep are detrimental to gas mileage. Big tires and lifts are gas mileage killers.

Enjoy the altitude, or drop it back down, run OEM tires and get 20+ MPG, you can't have both.

418 miles on 19 gallons of gas. Can't beat the BBD !
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post #6 of 27 Old 10-17-2013, 07:51 AM
Siva283
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I would love to get 12mpg. I am currently at about 10. But I am missing a bolt in the exhaust manifold and that has alot to do with it. If your manifold cracked? All things considered though you are doing pretty good gas milage wise.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #7 of 27 Old 10-17-2013, 08:25 AM
Anticanman
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Drive downhill.

Luck Favours The Prepared
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post #8 of 27 Old 10-17-2013, 08:34 AM
idiot magnet
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What engine and transmission?
Did you change the speedometer gear?
Did you upgrade your steering and brakes for the 35's?
Do you have GPS on your phone, so you can see what your real MPH's are?
Your actual MPG is most likely higher since your speedo is way off since you have 35's.
You are driving a BRICK and there's very little you can do to change that, but running a 4.56 or 4.88 gear will help your gas mileage and keep your engine in it's powerband. I could get 18 or 19 mpg's with my old YJ on 32's with the 4.10 gears.
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post #9 of 27 Old 10-17-2013, 08:57 AM Thread Starter
Bighaydn
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I don't romp the sh** out of it but I do like the sound and speed of my engine haha. Not sure about the manifold but I'll give a check. I've got the 4.0 straight six HO with a five speed tranny. And yeah the guy I bought it from updated the steering and breaks for 35s. He had 36 inch swampers before he put the 35s on. But could a bad tps sensor have anything to do with mpg?
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post #10 of 27 Old 10-17-2013, 09:01 AM
WNUNEZJR
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ik this is off topic but do you have any pics im thinking of lifting mine and it sounds like i will be running around the same set up
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post #11 of 27 Old 10-17-2013, 09:26 AM
jsawduste
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Without looking at your profile.............I am guessing you are 21 or younger.

Did I win ??
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post #12 of 27 Old 10-17-2013, 09:42 AM
Siva283
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Quote:
Originally Posted by jsawduste View Post
Without looking at your profile.............I am guessing you are 21 or younger.

Did I win ??
Winner Winner Chicken Dinner. The op is 20 according to his profile

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #13 of 27 Old 10-17-2013, 09:44 AM
jsawduste
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Quote:
Originally Posted by Siva283 View Post
Winner Winner Chicken Dinner. The op is 20 according to his profile
I like cookies.
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post #14 of 27 Old 10-17-2013, 10:04 AM
Siva283
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Location: Falling Waters
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Quote:
Originally Posted by jsawduste View Post
I like cookies.
But Winner Winner box of cookies just doesnt have the same ring to it.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #15 of 27 Old 10-17-2013, 10:56 AM Thread Starter
Bighaydn
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Haha am I coming across as that inexperienced? I just bought my jeep a month ago. But yeah I'm 20. But for pictures I'm not sure how to post since I'm not a paid member yet
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