81 Grand Prix - I'm preparing to swap my V6 to a Buick 350. Since I'm losing CCC, I need to deal with torque converter lockup, which was previously controlled by the computer. I want it to be automatic, not controlled by a switch, and I want it wired into the brakes so it unlocks when the brakes are applied.
I have cruise control & want to keep it. Cruise uses the normally closed terminals on my brake switch. I wondered if a switch existed that has another set of normally closed terminals, and sure enough, I found that 4th gen Camaro/Firebirds have one, pictured below. I got one from Autozone to test & it worked, and once I knew that I went to the junkyard & got the terminals & pigtails that plug into it.
80's Chevy trucks use a TCC vacuum switch (ACDelco #212-331) to control lockup (thanks pagrunt ), & I got one.
I also got the transmission terminal & wiring at the junkyard today.
With all the pieces I need, I mocked it up & wired it to a 12V test light, and it works just as expected. The TCC switch activates at about 5 inches of vacuum and the brake switch will shut it off when the brakes are applied. Here's a video of it working.
So with all of the pieces I need, i'll wire this all up & it'll be plug and play when I swap motors. I might add a small dash light so I can see when it's working, and I might even wire a light into my V6/CCC circuit, then connect this new setup alongside it so I can compare this to factory lockup.
I guess the verdict is out until it's in the car but I feel pretty good about it. Thanks also to Bonnewagon for talking through this with me.
I have cruise control & want to keep it. Cruise uses the normally closed terminals on my brake switch. I wondered if a switch existed that has another set of normally closed terminals, and sure enough, I found that 4th gen Camaro/Firebirds have one, pictured below. I got one from Autozone to test & it worked, and once I knew that I went to the junkyard & got the terminals & pigtails that plug into it.
80's Chevy trucks use a TCC vacuum switch (ACDelco #212-331) to control lockup (thanks pagrunt ), & I got one.
I also got the transmission terminal & wiring at the junkyard today.
With all the pieces I need, I mocked it up & wired it to a 12V test light, and it works just as expected. The TCC switch activates at about 5 inches of vacuum and the brake switch will shut it off when the brakes are applied. Here's a video of it working.
So with all of the pieces I need, i'll wire this all up & it'll be plug and play when I swap motors. I might add a small dash light so I can see when it's working, and I might even wire a light into my V6/CCC circuit, then connect this new setup alongside it so I can compare this to factory lockup.
I guess the verdict is out until it's in the car but I feel pretty good about it. Thanks also to Bonnewagon for talking through this with me.