I really need your help. Fuel Pump.
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Joined: Jul 2015
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Year: 1989
Model: Cherokee
Engine: 4.0
If I can't find it ill take a pictures so maybe that will help.
Edit: here is the best angle I could get. This is the fuel pump wires. One side plugs into fuel pump assemble. The other side runs up above the fuel filter and into the frame. It's fairly short.
So I take this short runner and remove the black plastic cover, then take the black wire and add the new ground, then tape up and cover with black plastic again?
Should I just do the new ground and not worry above the original ground and just leave it?
Last edited by Chick-N-Picker; Jun 12, 2016 at 10:59 AM.
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From: Central Michigan
Year: 1999
Model: Cherokee
Engine: 4.0
I have had nothing but bad luck with carter/airtex pumps. In my experience as an auto tech, i try and sell the delphi fuel pumps. Just seem to uave way less come backs with them compared to the carter/airtex brand
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Joined: Aug 2011
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Joined: Jul 2015
Posts: 694
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Year: 1989
Model: Cherokee
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I finished up the new ground a little while ago. Hopefully it fixes my issue.I didn't have a solder fun handy so I just wrapped it really good for now. Although I plan on soldering it later.
I do have one last question. Should I hook the ballast resistor back up or leave it bypassed?
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From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
It's OK to bypass it, but I leave mine in thinking I get some increased life from my pump. Maybe negligible, but no point in having it work harder than needed is my thought.
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Joined: Aug 2011
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Senior Member
Joined: Jul 2015
Posts: 694
Likes: 50
Year: 1989
Model: Cherokee
Engine: 4.0
Ok. Just decided to take for a test run and the dang thing is loosing gas, then picking back up.
I think it has the fact to do with that I've got my 94 pump in the 89. The 94 pump has 272,000 miles on it and it's been sitting for a 3-4 months unused. Also before I parked my 94 it did something close to that but I thought it was transmission related. Guess maybe the 94 fuel pump is going out.
Tomorrow I will take the 89 NAPA one back and get another one. Hopefully then we can see if it runs correctly and if the ground fixes it from failing so fast. Confusing crap.
I think it has the fact to do with that I've got my 94 pump in the 89. The 94 pump has 272,000 miles on it and it's been sitting for a 3-4 months unused. Also before I parked my 94 it did something close to that but I thought it was transmission related. Guess maybe the 94 fuel pump is going out.
Tomorrow I will take the 89 NAPA one back and get another one. Hopefully then we can see if it runs correctly and if the ground fixes it from failing so fast. Confusing crap.
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