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Topic Review (Newest First)
12-13-2009 09:11 PM
redjoe79 Ok thanks I'll look into that.
12-12-2009 07:07 PM
stevens243 Was the pressure leaving the tank or (more likely) trying to get in?

If it's trying to get in (as it should be) I think you have a pinched or clogged vent tube.

In the rear fender where the fuel line runs from the fill cap to the tank, there is a vent also. Check the vent and ensure it's not bent.

After that, it's time to download the field service manual and do some reading up on it. I don't have a full version of acrobat to cut the diagrams out and I have the 05 FSM anyway.

You can find the full FSM on a link in the general jeep discussion. I'll post the link shortly.
12-12-2009 03:21 PM
redjoe79 Remeber unscrewing gas cap and hearing preasure being released and that has never happened before. What do you suggest?
12-12-2009 11:17 AM
stevens243 Hmmm.

Next time it happens, pop the gas cap to see if the tank is being pressurized (over or under). May be a bad vent. Usually, that wouldn't let the jeep run but maybe it's pulling just enough air to continue to pump gas...
12-12-2009 10:59 AM
redjoe79
Loud Fuel Tank Noise

02' TJ, 4.0L, 5spd, 41,000mi.
After daily 15mi commute with engine off getting loud knocking noise from what seem inside the fuel tank. Can feel the viprations through rear tires. Started happening about a week ago and usually lasts about 5-10min then goes away. No CLue except have had an ASD code for about a year which my mechanic and dealer can not track down.

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