77ricbaez

Anyone know where I can find this part along with the vacuum ports and lines? I broke it and no stores seem to have it in stock; I doubt any junk yards will have any spare 70s-80s era GM's. It's all hondas and toyotas around here.

Fun71

I have never heard of a thermal vacuum switch for the choke. Those are generally used for the distributor vacuum advance. You'll need to find a part from a donor car as those are not reproduced.

77ricbaez

Yeah, this thing is attached to the air cleaner ( i think it may be called the MAP sensor but im not sure) one line goes to the TACS and the other two connect to the rear vacuum break of the carburetor and a source of manifold vacuum.

Fun71

The bottom of that really looks like a temperature sensor that would go into a coolant passage in the intake manifold. MAP sensor would go into an intake runner on a TBI or EFI system.

olds 307 and 403

You could try high temp epoxy. Yah, I recognize that piece but don't think I have a spare. Pretty sure it was used till the end of Olds V8 production, so it should be at any yard that still has 80's cars.

tru-blue 442

Is this it? P/N 05266.

joe_padavano

Yes. The part is called a Choke Vacuum Break TVS and was only used on the 1977-1981 cars. Once CCC was introduced, this part was replaced by a solenoid valve controlled by the ECU. You are very unlikely to find a new one.

77ricbaez

yeah that's it. I just crazy glued the broken parts, hopefully it holds up it not I'm gonna have to epoxy it.

tru-blue 442

No problem, just shoot me a PM if you decide that you need it.