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Unread 11-21-2012, 10:10 AM   #1
ninjaturtle0
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4.0 Picky about gas??

Thanks for reading.

I know the 4.0 is picky about spark plugs...

I usually use Shell or Exxon gas stations

About 3 months ago I had engine light P2096 code come up after fueling up at a Valero... Jeep runs fine but I ran the Jeep until E then refilled with Shell and resetted the engine light... Never came back on after 1K miles so it must of been the gas I'm thinking...

Last night I was stuck in traffic on E w/ the light on (must add this is scary lol)

I saw a Valero and I'm not a fan of them but had no choice and filled up halfway.

Well this morning on my way to work the engine light P2096 came back on while on the highway...

Seem like my Jeep doesn't like Valero's gas.

Any other 4.0 owners know anything about this??

Any suggestions are appreciated.

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Unread 11-21-2012, 10:16 AM   #2
TheBoogieman
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None of my seven Jeeps were picky.I stop at the local Kangaroo for gas because it's cheaper.Could be an O2 sensor going bad.

http://www.jeepforum.com/forum/f9/code-p2096-1240566/
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Unread 11-21-2012, 10:18 AM   #3
Zombi
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Was it the same Valero both times? Could have been water contamination.
I fuel up all over town with different stations and never had an issue.
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Unread 11-21-2012, 11:01 AM   #4
ninjaturtle0
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Quote:
Originally Posted by Zombi View Post
Was it the same Valero both times? Could have been water contamination.
I fuel up all over town with different stations and never had an issue.
2 Seperate Valero's... and it came on while on the highway the very next day...

O2's don't cost much I can pick one up and change it to see if this will work...

I would hate to take my Jeep to the dealership so they can figure out a way to rape me... They charge $100 just to see what the problem is.
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Unread 11-21-2012, 11:12 AM   #5
chriswj
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man ive used weed eater gas i used my premix gas for my zilla i have used gas that i know was atleast a year old and nothin happend. The 4.0 is like that fat guy who will eat mac and cheese that has been on the stove for three days eats it and wont look back
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Unread 11-21-2012, 01:29 PM   #6
ninjaturtle0
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Quote:
Originally Posted by chriswj View Post
man ive used weed eater gas i used my premix gas for my zilla i have used gas that i know was atleast a year old and nothin happend. The 4.0 is like that fat guy who will eat mac and cheese that has been on the stove for three days eats it and wont look back
LOL

If thats the case then the O2 prob needs to be replaced.
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Unread 11-21-2012, 06:45 PM   #7
chris142
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I've ran every brand and noname brand of gas and it's never ran any different or thrown a code.
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Unread 11-21-2012, 07:34 PM   #8
Moabrubi
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Whatever is cheapest goes in my heep.I have never had an issue. By the way, If your Jeep is anything like either of mine you should have 5 gallons left when the low fuel light comes on.
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Unread 11-21-2012, 07:38 PM   #9
chris142
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not mine! when the light comes on I need to get some gas asap. I will go directly to the station and put 18 gallons in.
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Unread 11-21-2012, 09:00 PM   #10
RioRyan
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I gas up on the indian reserve here (it's $20 cheaper per tank than the stations in town) and I've heard people complain about the res gas making their vehicles run bad but I can't say I've noticed a difference in the Jeep between that and Canadian Tire gas. So I would agree with the fat guy that'll eat anything bit
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Unread 11-22-2012, 06:21 PM   #11
Redredjeep
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My 97TJ w/ 97,000 mi. seems to crave preimum grade fuel,(pinging when starting or under strain when using reg.) when I lived in GA the gas there for reg. was 87 octane, here in colorado its 85 octane now it really wants it. Lucky I don't drive it that often. But no engine lights come on, only when I'm 4 wheelin up in the mtns. the ck gauges light appers and goes out after I get back.The light never stays on long enough to get checked at the repair shop. Mystery!!!
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Unread 11-22-2012, 06:34 PM   #12
jeffjeep1
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My 2002 and my 2005 don't care. I've run mileage checks with 87, 89, and 91/93. Mileage really did not change much. Not enough to overcome the price difference. Only had a code when I did a very heavy duty Seafoam application that wetted the plugs.
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Unread 11-22-2012, 08:36 PM   #13
frenchy206
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Personally, I go to a local gas station that sells ethanol free gas. I do notice slightly better mileage.
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Unread 11-23-2012, 06:45 AM   #14
jimwww
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I have always used Chevron in my vehicles.
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Unread 11-23-2012, 06:59 AM   #15
Offshoredrillin
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My only issue is octane and knocking, I have a 4.6 stroker and run 93 all the time, certain stations after filling up it sounds like a choir of xylophones. I'm thinking of carrying a gallon of toluene from now on.
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