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Unread 09-20-2003, 08:26 AM   #1
KeNTeChNiCaL
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fuel gauge

My fuel gauge i have noticed has stuck at the half-empty mark.

Is this a sign of a failing fuel pump ?

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1995 JGCL 5.2V8, Dual 3" exuast w/2 flowmasters 50 SUV series [b]no converter[/b](No smog testing req'd in MI)
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Unread 09-20-2003, 09:14 AM   #2
Harald
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Quote:
Originally Posted by KeNTeChNiCaL
My fuel gauge i have noticed has stuck at the half-empty mark.

Is this a sign of a failing fuel pump ?

No, it's sign of a defect fuel gauge. Lot of this on model you have. Mine seems to stop at 1/4.
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Unread 09-20-2003, 11:36 AM   #3
KeNTeChNiCaL
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how do ya fix this.....is it in the tank or at the instrument cluster ?

1995 JGC 5.2L full time 4x4
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Unread 09-20-2003, 12:39 PM   #4
pozner
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Quote:
Originally Posted by KeNTeChNiCaL
how do ya fix this.....is it in the tank or at the instrument cluster ?
1995 JGC 5.2L full time 4x4
The diagnostic procedure is basically universal. If you ground the fuel gauge wire, and the gauge shows Full, then the gauge is good (and the sender is the culprit).
The wire needs to be removed from the sending unit before doing this. Attach the connector to a good grounding point and turn the key to the 'run' position. The needle will sweep from its rest position to the opposite side.
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Unread 09-20-2003, 12:44 PM   #5
KeNTeChNiCaL
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by chance do you know where this unit is ?
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Unread 09-21-2003, 01:40 AM   #6
pozner
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Quote:
Originally Posted by KeNTeChNiCaL
by chance do you know where this unit is ?
The sending unit for the fuel gauge is part of the fuel pump assembly. Near as I can tell, the wire is black/orange. Not sure if the connector can easily be accessed with the tank in place. Any one that has replaced their own fuel pump can give you first hand info, or look for a fuel pump replacement thread.
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Last edited by pozner; 09-21-2003 at 04:57 PM..
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Unread 09-21-2003, 02:35 PM   #7
Harald
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Quote:
Originally Posted by KeNTeChNiCaL
My fuel gauge i have noticed has stuck at the half-empty mark.

Is this a sign of a failing fuel pump ?
To replace fuel pump, tank down on the ground. Done it on a Cherokee, took the better part of a weekend. If rust, have new strapping arrangement ready. I had to chop off mine, impossible to unscrew. Some work, but not difficult. Beware that you are working with gas vapour.
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Unread 09-22-2003, 10:13 PM   #8
crash98
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Yeah my fuel gauge will show proper fill leve then drop to empty then back to wherever it was then empty and so on every once and a while.
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