'91 pickup Manual Trans. Noise ? - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 09-11-2005, 08:53 PM
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'91 pickup Manual Trans. Noise ?

I have a '91 Toyota pickup, manual trans. 187,000 miles. A whinning noise seems to be coming from the trans. The noise is not there, when your on the gas, just when you let up on the gas, you hear the noise. If you push the clutch in when the noise occurs, the sound goes away. Let the clutch back out, it comes back. Plus the rear pinion seal is leaking now. Could it be a bad bearing in the trans. or the rear pinion bearing making the noise.
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#2 Old 09-12-2005, 03:51 PM
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Sounds to me like it could either be a clutch throwout bearing that is starting to go bad or maybe your gear synchros at starting to go.
I had an '85 4Runner with a 5-speed and it would wine like that during deceleration. I know for a fact that my gear synchros were pretty much worn-out (245,000 miles).
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#3 Old 09-12-2005, 06:24 PM
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I just jacked the truck up, and placed it in 2nd gear. I definately hear a whinning coming from the rear pinion. If the truck is in neutral, and the drive shaft is not turning, and the pinion not spinning, then there is no noise as I just spin the wheels.

I am going to try and replace the outer bearing and seal on the pinion tomorrow. Its a cheap fix maybe ???

I will let you know how I make out .

Last edited by Joe K.; 09-12-2005 at 06:26 PM.
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#4 Old 09-12-2005, 07:38 PM
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Well, there ya go. I wish you the best 'o luck, Joe.
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#5 Old 09-14-2005, 09:56 PM
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I replaced the pinion bearings and races, all is good now, no more noise.


Only the front pinion bearing needed replacing, but I changed both anyway.

The front one was pitted on the rollers, but the race was fine .

The replacement bearing came with the race.

I also replaced the 2 diff. bearings because it was apart allready, and didn't want to do it again.

No More Noise !!!!!!

I could not believe how easy it was to disassymble the rear , and set it back up.

A trans. shop by me wanted $1100 to do the job.

I have less than $150 into the repair for everything !

I used this link as a guide :
http://www.4x4wire.com/toyota/tech/gear_setup/
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