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...
Ported Vacuum Switchs
