Whine!!!
CF Veteran
Joined: Dec 2012
Posts: 4,169
Likes: 6
From: York, PA
Year: 1998
Model: Cherokee
Engine: 4.0
did you try running the car after you had the belt removed? that would atleast confirm that it's in the accessory drive... did you check power steering fluid? does the noise change when you add electrical load... i/e head lights, rear defrost, blower motor, wipers. if you had your climate control set on (front)defrost it will activate the AC, so be sure that the AC is completely off.
Senior Member
Joined: Dec 2012
Posts: 638
Likes: 16
From: Midwest
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0L
as long as you don't run it long enough to reach operating temp you will be fine. Battery power is sufficient to run the car there's no reason u can't. Its a very quick diagnostic procedure
Thread Starter
Junior Member
Joined: Dec 2012
Posts: 78
Likes: 0
From: Rio Rancho
Year: 1999
Model: Cherokee
Engine: 4.0L
Junior Member
Joined: Dec 2009
Posts: 93
Likes: 0
From: Charlotte, NC
Year: 1988 Comanche
Engine: 4.0
I had the same problem on my 88 MJ. It sounded exactly like the power steering pump. I added fluid and even added an additive to the oil and no luck. I was about tho replace the pump when my*battery*light came on. I replaced the alternator and no more wore whine.
Thread Starter
Junior Member
Joined: Dec 2012
Posts: 78
Likes: 0
From: Rio Rancho
Year: 1999
Model: Cherokee
Engine: 4.0L
What was weird was that the same day the whine started on my way home from work the voltage of the gauge dropped to 9. Got home parked it and started it again and it went back up to 13. I put a brand new alternator from Oreillys on March.
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Turn all of the pulleys by hand and listen for anomalies. Alternatively get a piece of hose and put it up to your ear, use it to listen around the engine bay like a stethescope. Beats random guesses from Internet people who aren't in front of your Jeep
Junior Member
Joined: Dec 2009
Posts: 93
Likes: 0
From: Charlotte, NC
Year: 1988 Comanche
Engine: 4.0
Same thing happened to me. One night voltage dropped and battery light came on next day charging normal but still had the whine. New alt and good to go. I would take that alt back to O'Reilly.
Last edited by nitroxsteve; Oct 16, 2013 at 08:42 PM.
Thread Starter
Junior Member
Joined: Dec 2012
Posts: 78
Likes: 0
From: Rio Rancho
Year: 1999
Model: Cherokee
Engine: 4.0L
Thanks, I guess it won't hurt getting a warranty exchange and hopefully that will take care of the annoying whine.
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