The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1989

[felorod]

Those are VSV's (Vacuum Switching Valves). Here's a link to a thread where their functions are discussed: https://www.toyotavantech.com/forum/...tached-diagram

Hi TIm, thanks so much for that link, I appreciate that.

It seems that the item I was looking at is the ISC-VSV, (Idle Speed Control Vacuum Switching Valve) I found a diagram for the ISC-VSV but I don't know where the connections are on the actual engine itself unfortunately.



Any ideas? Thanks again for your help.