Suddenly my idle after warm up started jumping a bit between 0 and 1,000 and one time almost shutdown the car. It is intermittent. Acceleration and run up through the RPM range was perfect, but only the idle is an issue.
Where to trace?
My first impression is DECEL Valve.
They appear impossible to find new. They are available for the 1974 through 1983 CIS models, but the 1973.5T? Nothing I can find.
Just how do they work? How can they fail? How can you test function?
Anyone..............
Thanks
Bob