Ford Focus Forum, Ford Focus ST Forum - View Single Post - JRSC rough idle with FC TB?
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Old 04-17-2005, 08:14 PM   #4
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Join Date: May 2004
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pull your air intake off and look at the butterfly in the tb. should be open a little.
adjust the idle screw until it s, disconnect the batt for a little while, reconnect and start the car and drive it a little while (needs to relearn).
should clear up the problem. sounds like your butterfly is closed all the way, starving the motor for air.
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