post #1 of Old 09-20-2003, 08:26 AM Thread Starter
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 ?


1995 JGCL 5.2V8, Dual 3" exuast w/2 flowmasters 50 SUV series no converter(No smog testing req'd in MI)
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post #2 of Old 09-20-2003, 09:14 AM
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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post #3 of Old 09-20-2003, 11:36 AM Thread Starter
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

1995 JGCL 5.2V8, Dual 3" exuast w/2 flowmasters 50 SUV series no converter(No smog testing req'd in MI)
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post #4 of Old 09-20-2003, 12:39 PM
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.

Poz
'94 red Grand Cherokee
Six cyl.
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post #5 of Old 09-20-2003, 12:44 PM Thread Starter
KeNTeChNiCaL
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by chance do you know where this unit is ?

1995 JGCL 5.2V8, Dual 3" exuast w/2 flowmasters 50 SUV series no converter(No smog testing req'd in MI)
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post #6 of Old 09-21-2003, 01:40 AM
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.

Poz
'94 red Grand Cherokee
Six cyl.

Last edited by pozner; 09-21-2003 at 04:57 PM.
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post #7 of Old 09-21-2003, 02:35 PM
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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post #8 of Old 09-22-2003, 10:13 PM
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.

97 Grand Cherokee 4.0
4 tv's+dvd+vcr+sega dreamcast
2- 15 visonik subwoofers
and about 4600 watts of power
http://members.cardomain.com/crash98
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