Torque Converter Lockup.

[joe231]

Originally Posted by kenm78

Yes mine is a 80 I found a little switch it the area to the passenger side of the brake booster near a junction block. It has a single connection on one side and a vacuum hose on the other. I'm not sure why the previous owner wired in the toggle switch instead of using the OE vacuum switch. Any way to test it and see if its working? I guess now I have to try and figure out how to hook it back up to OE??

do you have a mity-vac?
you can run the engine and check it with an ohm meter, at idle it should have continuity (contacts closed), rev the engine and the contacts should open. Mine, IIRC, has 2 green wires. one wire goes to the brake switch and the other goes to the transmission.
do you understand how it is supposed to work?

Originally Posted by kenm78

I must be blind all I see is the modulators, kick down solenoid inside trans (TH400), trans control solenoid (700R4), trans spark control (TH350), and trans temp switch (700R4).. I don't see it??

Originally Posted by kenm78

No I have a TH350 Tranny.

TH350C?

I have a 350C in my '80 and I just recently hooked it back up, so if you have any specific question let me know