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Old 12-12-2009, 10:50 AM   #1
Join Date: Dec 2009
Posts: 6
Loud Fuel Tank Noise

02', TJ, 4.0L, 45,000mi, 5spd

After daily 15mi commute with engine off getting loud knocking sound comming form inside gas tank. Last about 5-10min then stops. Can feel the viprations trough tires. No clue started about a week ago.

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Old 12-12-2009, 12:39 PM   #2
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Join Date: Jul 2008
Location: NW, NJ
Posts: 3,940
Sounds like the fuel pump is not shutting off.

Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 12-12-2009, 03:27 PM   #3
Join Date: Dec 2009
Posts: 6
Also when the gas cap is unscrewed I hear pressure being released now.
02' TJ
31" tires
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