Ported Vacuum Switchs

My understanding is some of these are designed to open or close when the engine reaches operating temp. I would like to replace mine, but looking on various parts websites there seem to be a number to choose from. They vary according to temp at which they open or close. Not certain which ones are designed to open, the CCEGR ports I think are designed to open and perhaps the CCEV port is designed to close? I have two CCEGR vacuum switches, one on the manifold and one on the radiator. There is also a single CCEV on the intake manifold. Does anyone have part #s for these, so that I may purchase the correct switches? Thank you.

What year, model and engine do you have?

Aspen500 said:

What year, model and engine do you have?

Click to expand...

1977 Plymouth Volare, 318.

Darnit, I don't have a '77 parts catalog.

However, Napa and Carquest/Advance can get them. They are sold by the color of the plastic and number of ports on the originals vs vehicle specific listings. The originals were color coded the same way as the aftermarket replacements so, if you have the original switches, it's possible to get new ones by just matching them up. If the colors are the same, they will work the same way and at the same temp. They generally run between $35 and $50 each, depending on the switch.

Hmm, I wondered if color had something to do with it. Autozone offers a blue and a white switch. The descriptions aren't specific though. Thats why I was looking for specific parts #s.

Idle Enrichment



Spark Advance



EGR





Hope this helps.
BudW