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P0300, high idle,

I've heard of this with 350s. It was always after someone moved the plate in the throttle bodies while cleaning them though. The idle position would never reset no matter

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Old 04-23-2013, 12:49 PM   #1 (permalink)
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I've heard of this with 350s. It was always after someone moved the plate in the throttle bodies while cleaning them though. The idle position would never reset no matter what relearning procedure was performed and eventually they had to be replaced.

Is there anything that might have upset the butterfly valve in the throttle bodies? Or did you unplug them for any reason then start the car?
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