whine while accelerating and clunk when shifting (1 Viewer)

[zwolfman]

Yesterday, my '91 LC started whining whenever it is in gear and the gas is applied. Also, about a week ago it stareted clunking at any time gas was applied or let off. Any ideas or help would be greatly appreciated.

Thanks all

 

[zwolfman]

Fyi, tranny fluid level is fine.

 

[kidglove13]

Front or rear diff possibly pinion bearing
How do the drive flanges look?

 

[spike6901]

Yesterday, my '91 LC started whining whenever it is in gear and the gas is applied. Also, about a week ago it stareted clunking at any time gas was applied or let off. Any ideas or help would be greatly appreciated.

Thanks all

Check your u-joints. They are the most common and cheapest fix.

The clunk does not sound like a pinion bearing but the whining noise when on the throttle does, especially if there is no noise when coasting.

Worst comes to worst, you can find a shop with a listening device. They can put a microphone on different compnents like your diffs and transfer case and independantly switch from mic to mic to see where the noise is coming from.

 

[Eicca]

Does your whine sound like this?



Because that whine is completely normal. All A440F (and I think A442F) transmissions have it. It's because of the type of gears used in the first gearset.

 

[zwolfman]

Do you mean the companion flange?

 

[lispeej]

the whining and the clunk can be normal. i noticed my would whine more on smoother surfaces or on grass. i used to have a 92. for the clunk, we called it the "infamous clunk". do a search and you'll see what i mean.
by normal i mean is common in the 91-92 lc's.

 

[Polar Bear]

My idler pulley went bad and started whining more than my three year old. As for the clunk... Bad U joint?

 

[Schnieb]

I had the infamous clunk in my 92. When I regeared it went away. Didn't replace the u-joints just totally rebuilt the front and rear. CLUNK GONE!!