Burning up fuel pumps
10-09-2015, 06:06 PM
#1
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Model: Cherokee
Burning up fuel pumps
I am going to look at a 1990 Pioneer and the guy says that it keeps burning fuel pumps up (melting off the sender). I was thinking most likely bare wires touching somewhere but what do you guys think it could/would be? Thanks for the help!
10-09-2015, 09:08 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Bad ground for the fuel pump?
10-09-2015, 09:38 PM
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I'll check the ground also. Where exactly is the ground for the fuel pump behind the tail light? I've owned a 95 but never had an issue with any kind of wiring with it
10-09-2015, 11:12 PM
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Year: 1990
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10-10-2015, 03:55 AM
#9
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Year: 1990
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Engine: 4.0
Possibly the resistor is bypassed or damaged. Left side inner fender near the front. White ceramic thing around two inches long with one wire at each end and a bolt in the middle (from memory and I've been drinking so beware).
10-10-2015, 04:44 AM
#11
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
By passing resistor is something that was done from factory in later years it causes no harm to pump. Bad ground or connections will cause ill effects. Cruiser54 is the Renix king following his advice will net best results with your new Xj if you make the purchase.
10-10-2015, 09:04 AM
#12
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Year: 1990
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Perhaps the owner is using Airtex pumps?
10-10-2015, 09:56 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0