possible explanations please on th350
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Car: 1989 GTA
Engine: 5.7 /360
Transmission: turbo 350
Axle/Gears: stock
possible explanations please on th350
I drove about 5-6 miles after replacing old tranny with new(to this car) It shifted properly and all seemed fine. As I pull into the drive I lost drive motion. I jacked it up and checked to see; TC working, Rear end working, linkage operating smoothly, driveshaft turning when rotating rear tires manually. The first thing I thought to check was the vacuum to the modulator and it had split so I replace the hose and it didn't help. Any ideas on where to start looking for possible failure? I have heard the term "burned up the tranny" but there was no slipping or noise or anything....it just stopped working.Thanks
#4
Re: possible explanations please on th350
It doesn't, but I usually like to run the trans out to the bottom of the cooler and trans in to the top. This is how OEM does it. If the fittings are parallel to the road, I would just plumb it whatever looks the cleanest.
The governor is the round cover near the tail shaft housing on the drivers side. There is most likely a heavy spring clip that goes over the cover, you will need to carefully use a chisel to remove the cover.
The governor is the round cover near the tail shaft housing on the drivers side. There is most likely a heavy spring clip that goes over the cover, you will need to carefully use a chisel to remove the cover.
Last edited by morgsie; 08-05-2013 at 11:54 AM.
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: possible explanations please on th350
The pump gears at front of trans driven by the convertor supply the fluid pressure that makes everything work ;
if they aren't being driven then you have no motion
The stock TH350 pump gears are only powered metal .I took out 3 sets under similar light driving circumstances to you
I was young and didn't know any better , the dodgy trans builder kept blaming me for not installing the convertor right and continued to fit factory gears.
Finally went to another guy and 1st thing he said was TH350 have weak pump gears and fitted steel ones.
Four years of drag racing on that trans and never blew them again
FWIW
Neither the governor or the modulator will make it totally lose motion, they only affect the shifts ( or not)
Car would still have reverse
Last edited by vetteoz; 08-05-2013 at 10:21 PM.
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Car: 86 Camaro IROC-Z28
Engine: 4.8 LS 68mm turbo
Transmission: Turbo 350
Axle/Gears: 3.08 10 bolt
Re: possible explanations please on th350
What other said above. Plus thought I would mention do you have enough trans fluid in it? It's free and worth checking again. Crank the car, cylethrough each gear, put it back in park, check while running. Also smell the fluid and see if it smells like burnt electronics/plastic.
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