Ok, so here's a discovery I made. I start the car and the idle goes up to like 2000-2500 rpm, but with the air cleaner off I can deflect the plate a little and the rpms drop. Depending on how much I press the plate down determines how low the rpms go. I can deflect it and hold it to the spot where my idle is stable at about 650-750 rpm. Hopefully this info can help someone to help me figure my problem out.

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1990 190E 3.0L