You're welcome. Sorry I mean IAC discussed above.This seems to be a good tip, thanks.
The problem is that my car does not have ISCV.
No driving needed, just test to see if idle is stable at standstill.If I disconnect the TPS, the car will not be able to drive?
an engine will rev at whatever speed incoming air allows. Even with leaks, this typically cause high idle speed, but stable. Going up & down usually is some sort of idle-controller trying to catch up to leaks, but if you engine doesn't have one... wonder what's changing incoming air-flow?So, I'll check the vacuum leaks again and report back.
Here's test, measure output-voltage of AFM. Is it steady or bouncing along with idle?