1989 300te...When I come to a light/ stop sign, idle...the idle drops and car stalls. Not all the time...it idles nicely most of the time, but every too frequently, as I let off the gas and the engine has time to drop down it's rpm's it will drop below 'idle' and then stall. Pain in the rear! It can even happen on a wide banking turn when you let your foot off the gas...PAIN.
How do I figure this out?