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momentary drop in idle speed
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rickauai
New User
Oct 30, 2010, 10:55 AM
Post #1 of 2
(1026 views)
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momentary drop in idle speed
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2002 ford ranger 4.0 V6 automatic 57,000 miles. Aloha, after driving, when i stop and move the shift lever from drive to neutral or reverse the engine almost stalls than returns to normal idle. I just replaced the battery a week ago so don't know if the computer is playing a part in the problem. Thanks for any advise!
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 30, 2010, 11:57 AM
Post #2 of 2
(1016 views)
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Re: momentary drop in idle speed
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You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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