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post #1 of (permalink) Old 04-18-2008, 10:30 AM Thread Starter
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Any insight on a 94 wrangler gas tank warping?

Hey all,

This is the second time in 5 years that I have had to replace my gas tank and sending unit due to the tank warping and unit cracking. Is this a problem anyone else has had?

It is a completely stock setup, I haven't had it off macadam since the boy was born and haven't even put that many miles on it. Could it be heat, possibly bent frame or both in conjunction?

(Now that I am near Atlanta, I went to a new mechanic that everybody said was knowledgeble, but I still miss Jake in Philly, he would drag me under the lift and make sure I saw everything.)

Mick

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post #2 of (permalink) Old 04-18-2008, 11:00 AM
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Is it a plastic tank, held up by the skidplate? I can't think of anything that could harm it. Maybe it's a Third World copy made with junky material. Did you install it?

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post #3 of (permalink) Old 04-18-2008, 12:36 PM Thread Starter
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Jim,

No I didn't install it, but I trust my old mechanic who did the first one, he has worked on my family's cars for years. The most recent mechanic I asked shrugged his shoulders, and said close to the same, "maybe it's a defective part".

I am just if this has happened to anyone else, or should I start looking for other problems that might have cause this one.

It does appear to be right on top of the skid plate.

Right now I am a stay at home dad with a 4 year old, and don't really have the oppurtunity to work on it myself, so I have to take my chances with mechanics.

Mick

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post #4 of (permalink) Old 04-18-2008, 12:44 PM
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Hey, four is old enough to get greasy. Time for the training to start!

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post #5 of (permalink) Old 04-18-2008, 11:06 PM
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I'd like to know if it's collapsing/deforming in the same way each time. If it is, its more likely that the fuel pump is drawing fuel, and that there is a vacuum in the tank. If them emissions system doesn't vent the tank, the vacuum can become large enough that atmospheric pressure deforms the tank.
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post #6 of (permalink) Old 04-18-2008, 11:38 PM
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Leve beat me to it. Tank/fuel system not venting properly. Even if the Jeep sits unused partially full, the vapors expand and contract with temp change.

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post #7 of (permalink) Old 04-19-2008, 02:00 PM
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buddy i worked with had the same problem... he put a heat lamp under the tank and pushed it flat again with a stick... then he got the glue that body shops use to glue new panels in instead of welding them... and he glued the tank to the skid... it lasted for 7 years till him and the wife broke up... seems like a pretty good way to approach it if you ask me
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post #8 of (permalink) Old 04-30-2008, 10:06 AM Thread Starter
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Thanks for the replys! Sorry it took me so long to get back. I was not able to get to see the tank. I took Jim_Lou's advice and pushed my son underneath the car and asked him to desribe it, but the only infor I could glean from him was that the tank was "bendy and dirty". I am just going to keep looking every few months to see if I can spot any warping.

Thanks again!
Mick

What did the Dalai Lama say to the hot dog vendor?
"Make me one with everything."

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