New Fuel Pump Noise - LOUD
03-01-2012, 05:42 AM
#16
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I replaced my 20yr old failing fuel pump with the Autozone fuel pump and it makes a loud whirring noise. I wans't about to drop the tank again so I put automotive sound absorbing mat under the carpet in the cargo bay. This helped a little. If I ever drop the tank again, I'll replace it with high end brand.
FWIW, when you guys pull out the fuel pump module, is the tapered rubber grommet on the pickup tube bottom? If not, it's floating around in the tank and if not reinstalled will cause fuel pump noise.
03-01-2012, 09:51 AM
#17
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Year: 1996
Model: Cherokee
Engine: 4.0 high output
Originally Posted by G'Pa
Thanks for the insight....what would you consider a GOOD brand name?
BTW...your '89 must be different than my '92 (??)... it is possible to replace the pump without dropping the tank.
BTW...your '89 must be different than my '92 (??)... it is possible to replace the pump without dropping the tank.
For brands most people recommend Bosch but I have no experience with them. Just avoid Airtex. You get what you pay for on stuff like that.
03-01-2012, 03:40 PM
#18
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03-01-2012, 03:56 PM
#19
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Year: 1991
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If you have an airtex pump i would almost guarantee thats the problem. Buy a bosch, some modifications are required to the bracket and wiring but its such a better pump
03-01-2012, 05:41 PM
#20
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Folks, there are so many threads similar to this with issues with Airtex fuel pumps that it isn't even funny.
Yes, some people have had reasonable luck with them. But MANY have not. Premature failure, noise that sounds like a jet airliner, incorrect pressure, etc. And because of these real stories in the field (and my PERSONAL experience with those pieces of crap), I tell everyone to stay away from them like the plague.
Get it out of there. My favorite is Bosch. My second choice is Carter. Anything is better than an Airtex.
Yes, some people have had reasonable luck with them. But MANY have not. Premature failure, noise that sounds like a jet airliner, incorrect pressure, etc. And because of these real stories in the field (and my PERSONAL experience with those pieces of crap), I tell everyone to stay away from them like the plague.
Get it out of there. My favorite is Bosch. My second choice is Carter. Anything is better than an Airtex.
03-01-2012, 08:25 PM
#24
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By the way, the fuel pump has quieted down now that it's been well over a year. Initially it was annoying it was so loud.
03-02-2012, 11:24 PM
#26
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Year: 89
Model: Cherokee
Engine: 4.0
i took the resistor off mine, original burnt up and was only letting 9 volts thru it. my pump is loud now, but the dealer here said it would be. he is the one that recommended bypassing the resistor. said they take them off all the time.
03-03-2012, 06:49 AM
#27
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Year: 1990
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Funny you shuld bring this up. My wife came home from work the other night and told me her XJ was intermittently acting like it did just before the fuel pump went out last summer.
So I checked the ground at the fuel pump connector to body. Perfect. ulled the fuel pump relay and checked the terminals. Looked great as I had alrteady removed all those relays, wire brushed the terminals and sprayed electronics cleaner into the sockets as I always do when working on these Jeeps. I did it to hers 2 years ago.
So then I went over to the resistor. The spade connectors coud be wiggled easily with my fingers. I unplugged them and saw the tabs on the resistor were dark from arcing. Got the terminals out of the plastic holder in the harness, squeezed each side just a skosh, reinstalled them into the plug and then reattached them. No more wiggling. Nice tight connection.
Last night, after her day off and the running around all over town she does on her day off, she came in and said the Jeep has run perfectly. Food for thought. I then thought I might do the same to my Comanche just to be sure they're tight. They were real snug already.
03-03-2012, 09:30 AM
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Thanks guys,
Yes it was an airtex pump...but the question is have you experienced this specific problem - ie very loud hum or whirring from the pump? And when I say very loud I mean you have to turn the radio up it's so loud.
Would incorrect return pressure cause this?
More thoughts from anybody.
Yes it was an airtex pump...but the question is have you experienced this specific problem - ie very loud hum or whirring from the pump? And when I say very loud I mean you have to turn the radio up it's so loud.
Would incorrect return pressure cause this?
More thoughts from anybody.
03-03-2012, 10:28 AM
#29
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Year: 1989
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Engine: 4.0l 6 cylinder
Originally Posted by SHANE 87
Warranty it I had the same problem with a airteks pump and 2 weeks later it started causing my engine control 1 fuse to blow
How loud could it be
Have u changed your fuel pump ballast
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