Idle Problems
 

Hello this is an 89 manual non-turbo supra. The last thing i did to it was a head gasket about 8 months back. It was successful. My first one ever.

The problem I have is that while stoped at the light the engine idle drops and the car seems like its going to stall out and the dash lights, just about to come on and the car kicks back on and idles little over 1000 rpm then repeats all over again. this happens steady over and over.

While driving this problem doesn't happen.

Any suggestions.

Does it do from when you first fire the car up as well or only after you've driven it? It sounds like you may want to check to make sure that your vacuum lines are still connected properly and that they don't have any crakcs in them... I'm sure some other more experienced people will have more suggestions.

Thank I'm looking into that since your suggestion. Do you have or know where documents / photos are on vacuum line setup.

Yup, sounds like a vacuum leak. Check all the lines.

Sure, here it is: Vacuum Piping

This should give the location to most all of the lines, I think there might be a couple from some system not shown.