these EXACT same symptoms happen to me. on a cold start... warm start is not as pleasant.. but a little better. local mechanic diagnosed a few things... said it was the "Control Injector", needs a new ICV, and a "coolant sensor" (i assume he means dme?) anyway thoughts?

"Control injector" - I lol'd
ICV - rarely fails
"Coolant sensor" - I lol'd again, part is thermo time switch, not likely to be bad

Time for a new mechanic.

Remember to check your TPS when Throttle plate is closed.

Last week had a simiular issue, checked vacuume - no leaks, then checked my TPS and found the TPS it was loose and intermittent, had to remove TB to calibrate and replace it.

Gremlins are tough to catch!

Later...

Frans...

What year is the car? I had the identical problem and replacing the Aux. air regulator and the DME temp sensor did the trick. You may also want to look at the J-hose located under the intake manifold as they become very brittle over time and, since it connects to the Aux. air regulator, a vacuum leak in this area may additionally create this issue.

Mine is an '85 type 2. friday It started acting even weirder, idling at 2000 rpm! I then jiggled the ICV connector and it just settled down to normal idle again. My ICV is new so maybe the connector just needs a bit of contact spray after all! I'll let you know if it acts up again.