Your idle air controller (IAC) i believe is mounted on the rear driver's side of your intake plenum box (top).
Mine is on the throttle body, but mine's a '97
If you do a search, search "cleaning IAC" or "cleaning stepper motor(same thing)"
read about it, even if your reading about a different type, the solutions are identical.
Do not push/pull the stem, as you will change the reference point that your ECU has developed over time.
Finally, the idle jumps in park/neutral as you've removed the driveline load from the engine, but the IAC can't drive closed due to carbon buildup.
I used a toothbrush & wd40 to clean mine, don't forget to clean the hole that you pull it out of.
After it's cleaned, repost for more suggestions.
luck,greg
Mine is on the throttle body, but mine's a '97
If you do a search, search "cleaning IAC" or "cleaning stepper motor(same thing)"
read about it, even if your reading about a different type, the solutions are identical.
Do not push/pull the stem, as you will change the reference point that your ECU has developed over time.
Finally, the idle jumps in park/neutral as you've removed the driveline load from the engine, but the IAC can't drive closed due to carbon buildup.
I used a toothbrush & wd40 to clean mine, don't forget to clean the hole that you pull it out of.
After it's cleaned, repost for more suggestions.
luck,greg
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