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Unread 02-18-2005, 07:58 PM   #1
mikemedic
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Join Date: Nov 2004
Posts: 12
1994 Grand cherokee fuel pump problem

I have a 1994 grand cherokee laredo. Sometime when you o to start the car it turns but doesnt kick over. I can not hear the fuel pump humming. So I go underneath and find the wiring harness for the fuel pump and wiggle it around, then it fstarts ok. I hear the hum. It never stalls once it starts and the fuel pump was replacd about a year ago. I also notice one time the fuel gauge read empty and there was several gallons of gas. Took it to my mechanic and he siad he tightened some wires? I am assuming it was this connection form the fuel pump assy to the wiring harness. I think I have a loose connection in that male/female connection? Ok so i can identify the culprit wire. i sprayed some contact cleaner on the pins to make a better cleaner connection tonight, so far so good but i bet it will cut out again. Can anybody tell me what the five wires supple and the colors from that connection( fuel pump harness to wire assy?) If I could find te culprit wire i may be able to fix. Does anyone have any other ideas , again once it starts it will run fine. An diagram explaining those wires would be great. I have the hayes manual but cant seem to track that 5 pin connection down


Thanks---Mike

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Unread 02-19-2005, 07:43 AM   #2
driabyor
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Join Date: Apr 2004
Location: chilton-haynes<$20
Posts: 2,450
it could be a broken wire at the connector.. your wiggling is causing it to make contact again.... you may have to replace the plugs.. or just hard wire it...

another option is to get some contact cleaner ,spray on both plugs . then put some dielectric grease on them
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Unread 02-19-2005, 07:49 AM   #3
mikemedic
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Join Date: Nov 2004
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yeah, thats what i thought..I did spray some contact cleaner on the plugs..drenched them. then reassembled... where do you buy dielectric grease? auto store?

Does anybody have the wiring diagram for that particular connection?
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