Loud whining noise in 4wd
02-04-2013, 05:26 AM
#1
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Location: Rome, GA
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Year: 1990
Model: Cherokee
Engine: 4.0
Loud whining noise in 4wd
It's not really a "bad" noise that I can tell but, it does sound kind of like an Allison transmission when it's cold.
Only happens in 4H or 4L and goes away when in 2H.
I've checked all 3 of the front U-joints and they feel solid. I've also greased them and the drive shaft as well.
Is this noise normal or do I have cause for concern?
Only happens in 4H or 4L and goes away when in 2H.
I've checked all 3 of the front U-joints and they feel solid. I've also greased them and the drive shaft as well.
Is this noise normal or do I have cause for concern?
02-04-2013, 05:54 AM
#2
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
They're a little whiney in 4wd.
02-04-2013, 08:23 AM
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
the only whine out of my 1999 with AX-15/NP231 is in reverse. Nothing that sounds like an Allison slushbox. For comparison, what year do you drive?Change your fluid lately?
02-04-2013, 10:01 AM
#5
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My 98 AW4/NP231 whines ever so slightly in 4WD. I was worried about it for a while, but it seems normal, it doesn't sound like anything is grinding, just a little whine.
02-04-2013, 05:17 PM
#6
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Year: 1990
Model: Cherokee
Engine: 4.0
90 RENIX and yes, I changed the fluid right after I bought it. The old fluid came out looking like used diesel oil. It had brand new fresh fluid in the tranny but, I guess nobody ever thought to change the t-case fluid..............or at least not for a good long while.
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