Loud fuel pump. How long left?
Thread Starter
CF Veteran
Joined: Jan 2009
Posts: 1,964
Likes: 6
From: Baltimore, Maryland
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
CF Veteran
Joined: Feb 2016
Posts: 3,683
Likes: 8
From: Northern New Mexico
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
Thread Starter
CF Veteran
Joined: Jan 2009
Posts: 1,964
Likes: 6
From: Baltimore, Maryland
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 
Newbie
Joined: Oct 2015
Posts: 14
Likes: 0
From: Michigan
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
CF Veteran
Joined: Feb 2016
Posts: 3,683
Likes: 8
From: Northern New Mexico
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
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CF Veteran
Joined: Nov 2010
Posts: 5,841
Likes: 117
From: In the middle of Minnesota!
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?
