[anarchyx34]

The distributor on the nonturbo is 100% different than the turbo's. However, check to make sure the vacuum hoses going to the distributor are in good shape. Because extreme advances of ignition timing can cause the idle speed to go up. You also may want to try spraying the throttle body liberally with a carb/throttle body cleaner, as the IAC valve on our cars tend to gum up causing erratic idle problems. In any case, the idle can be manually adjusted by turning the screw on top of the throttle body, while grounding the green connector by the drivers side strut tower. Hope this helps.

 

[anarchyx34]

The engine is supposed to idle at 1500 when cold. That's a normal function. Your IAC valve was probably clogged before you re-did the engine. Same thing happened to my old '89 mx6 that I gave to my friend. The car didnt have a fast cold idle, so it wanted to stall half the time until it warmed up. After we re-did his cyl head and replaced the IAC valve, it idles at 1500 when cold.

 

[anarchyx34]

Many thanks to each of the above posters for their thoughts. I'm passing these on to the mechanic working on the car. anarchyx34, I've wondered about vacuum hoses to ignition--but then convinced myself that ignitions are driven by computer these days rather than the old, mechanical vacuum advance. Is is vacuum/mechanical on the 89 626 or electronically-driven? Again, many thanks.

yep, believe it or not, the nonturbo engine uses an old fasioned mechanical/vaccum advance system. It dosent use points though, it has a hall effect sensor type ignitor built in. It's generally a pretty reliable setup.