phils89sc
Registered User
I just got the head gasket job finished on my 89SC and got her back up and running. She runs well, although at the moment, I have the SC bypassed because I need to replace the seal and pulley.
My problem is this and has been this since I got the car. When I start it, cold, there is no high idle. the RPM will rise to about 1100rpm and then back down to the normal 800 or so. It is a smooth idle. However, after the car warms up, I can start it and the RPM will jump up to about 1600 to 1800 rpm or so then come back down after about 3 to 5 seconds back to normal.
I have checked everywhere for vacuum leaks, resealed the IC piping, etc. I cannot figure out what the problem is, if there even is one?
For those who have 89 SC's, what does your car do when you start it cold and hot? I have tried 3 different IAC's, pretty much with the same result.
Is there a way to set the base idle on the SC?
Thanks for your help.
My problem is this and has been this since I got the car. When I start it, cold, there is no high idle. the RPM will rise to about 1100rpm and then back down to the normal 800 or so. It is a smooth idle. However, after the car warms up, I can start it and the RPM will jump up to about 1600 to 1800 rpm or so then come back down after about 3 to 5 seconds back to normal.
I have checked everywhere for vacuum leaks, resealed the IC piping, etc. I cannot figure out what the problem is, if there even is one?
For those who have 89 SC's, what does your car do when you start it cold and hot? I have tried 3 different IAC's, pretty much with the same result.
Is there a way to set the base idle on the SC?
Thanks for your help.