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Old 03-11-2017, 04:08 AM   #3
Figuarus
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Join Date: Sep 2014
Location: Salt Lake City, UT
Posts: 346
Re: TH400 Whining...

Ok...ANOTHER update.

My truck has been sitting for the last 4 and a half months due to a BAD engine oil leak.

Two days ago, I got down to fixing the oil leak and went to pull the truck out from under my carport. There was some SERIOUS whining from the trans when I got it to fire up.

I tried shifting into gear, but there were no gears to be had.

At first, I thought that I had lost all the fluid from the trans, but further inspection told me that there was PLENTY of fluid in the pan.

Yesterday, after letting it idle for a minute or two, the whining started to go away, and I had gears again. I took it for a drive today around town and it's now driving just fine, albeit thought I do have a whine if I manually shift into first to take off.


Is it time to consider a swap or rebuild? Is this a case of the front pump going out?
I have a lead on a 350/700r4 from a late 80s van, and it makes sense to upgrade, but if I can keep this trans alive as long as I can, that would be awesome. (I've got a weird emotional attachment to it as it came out of my dad's 71 Monte Carlo )

Thanks guys.
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Last edited by Figuarus; 03-11-2017 at 04:09 AM. Reason: I accidentally a word
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