Loud fuel pump. How long left?
10-30-2016, 02:40 PM
#1
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Year: 1994 1993
Model: Cherokee
Engine: 4.0
Loud fuel pump. How long left?
Hello everyone. Long story short today the fuel pump in my 1993 XJ started making a LOT louder humming. The pump is only 2 years old but was a decent one. Bypassed the resistor and changed the fuel filter then topped off the fuel with some Lucas fuel injector cleaner/lubricant added. Still loud. Other than that drives fine.
My only concern is I have to drive to Virginia tomorrow and take some people to the airport. Maybe 150 miles total for the day. Should I be paranoid and rent a car or could this thing run with the loud pump for awhile yet? Thanks
My only concern is I have to drive to Virginia tomorrow and take some people to the airport. Maybe 150 miles total for the day. Should I be paranoid and rent a car or could this thing run with the loud pump for awhile yet? Thanks
10-30-2016, 02:43 PM
#2
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Year: 1999
Model: Cherokee
Engine: 4.0
Hello everyone. Long story short today the fuel pump in my 1993 XJ started making a LOT louder humming. The pump is only 2 years old but was a decent one. Bypassed the resistor and changed the fuel filter then topped off the fuel with some Lucas fuel injector cleaner/lubricant added. Still loud. Other than that drives fine.
My only concern is I have to drive to Virginia tomorrow and take some people to the airport. Maybe 150 miles total for the day. Should I be paranoid and rent a car or could this thing run with the loud pump for awhile yet? Thanks
My only concern is I have to drive to Virginia tomorrow and take some people to the airport. Maybe 150 miles total for the day. Should I be paranoid and rent a car or could this thing run with the loud pump for awhile yet? Thanks
11-04-2016, 07:55 PM
#3
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Year: 1994 1993
Model: Cherokee
Engine: 4.0
If anyone is interested my fuel pump became quiet again. Not sure if changing the filter helped or dumping in a higher than suggested quantity of the Lucas fuel system cleaner-cylinder lubricant got to something or wire brushing the connections for the resistor, but after a days driving it just went back to normal pump volume and has stayed there since 
11-04-2016, 08:30 PM
#4
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Year: 2001
Model: Cherokee
Engine: 4.0
If anyone is interested my fuel pump became quiet again. Not sure if changing the filter helped or dumping in a higher than suggested quantity of the Lucas fuel system cleaner-cylinder lubricant got to something or wire brushing the connections for the resistor, but after a days driving it just went back to normal pump volume and has stayed there since
11-05-2016, 04:46 AM
#5
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Year: 1999
Model: Cherokee
Engine: 4.0
If anyone is interested my fuel pump became quiet again. Not sure if changing the filter helped or dumping in a higher than suggested quantity of the Lucas fuel system cleaner-cylinder lubricant got to something or wire brushing the connections for the resistor, but after a days driving it just went back to normal pump volume and has stayed there since
11-05-2016, 08:51 AM
#6
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
What brand is the pump?
11-05-2016, 04:22 PM
#7
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Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Time to schedule a replacement, before you find yourself stranded.
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11-05-2016, 05:33 PM
#9
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Year: 1999
Model: Cherokee
Engine: 4.0
"Increasing fuel pump noise" is almost always a symptom of future failure. I've seen it more times than I have fingers and toes. When is it going to fail? Who knows. You feel lucky?
