Mechanics

THE TORQUE CONVERTER WILL ONLY LOCK-UP WHEN COLD.

1985 Chevrolet Chevette • 35,000 miles

Hello. I've had the car for a while now and I noticed that the torque converter actually locks-up when cold, but not when hot. After driving a few minutes, it will stop locking up. Where should I start looking?

Thanks : )
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Corsica95
June 20, 2012.



So is it possible that someone put that thing in my car even though it's for much bigger GM cars? I guess I would have to go to a scrap yard and find a Chevette and take all the vacuums and the switch to put them in my car?


Tiny
Corsica95
Jun 25, 2012.
Ok I can get you a copy of the vacuum diagram for your car but I need to know does it have a/c, power steering and manual or a/t transmission.


Racefan966
Jun 25, 2012.
Thanks! : )

The car is automatic, no a/c, no power steering.


Tiny
Corsica95
Jun 28, 2012.
Here is the vacuum diagram for that.


Racefan966
Jun 28, 2012.
Thanks a lot for the diagram! I have one question though. Is the thing on the right an A/C compressor? (My car doesn't have A/C) : S


Tiny
Corsica95
Jun 29, 2012.
I don't get that either as the diagram is suppose to be auto trans with no ac and no power steering. Strange.


Racefan966
Jun 29, 2012.
Gosh! I forgot to mention that my car is a Canadian car! I guess that's why I kept on finding the 2-3 or 5 ports TVS! I checked on a vacuum diagram website and for Canadian vehicules, the TVS has 4 ports! Now the trick is to find one somewhere.


Tiny
Corsica95
Jun 30, 2012.
Yes true.


Racefan966
Jun 30, 2012.
So. I've changed my switch and the idle smoothed itself a bit (?) Except for the egr valve sticking once in a while, but the torque converter still wont lock-up when the car is warmed up.


Tiny
Corsica95
Jun 30, 2012.
It probably the lock up solenoid.


Racefan966
Jul 1, 2012.
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