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Idle problems with '81 200 1981

If yours has the air control valve and the throttle switch, it probably has the coolant temperature sensor below the number one intake port about an inch and one-half away from where the number three spark plug wire plugs into the distributor cap. It's easily visible with a flashlight.

The CPR is probably pretty well covered in the archives. I don't know much about it except that it comes into play when the car is warming up. I believe it's also called a warm-up regulator. I've never taken one apart.

Good luck.
--
Thanks everyone for all the information and advice, Doug C. 81 242 Brick Off Blocks, stock, B21F, M46; 86 244, B230, 140k , auto.






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