Art, Last week you gave an answer/suggestion to a post by AppleTech's high idle after his car had warmed up, but was ok at start up. I noted that I've had the same problem. I did you suggestion of putting the plastic bag test from the air hose going into the throttle body. My idle stayed the same and remained high (in the 1100 rpm range) and my idle adjustment knob is also dialed all the way closed (clockwise). I checked my vacuum lines and they all appear secure. Where do I go from here? Except for the high warm idle, the car runs perfectly. Thanks for any suggestions.
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'86 sedan with 403,000 miles on the original engine and automatic transmission