RPM Spikes and Dips

2003 MAZDA TRIBUTE
205,000 MILES • 3.0L • V6 • FWD • AUTOMATIC
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DANIEL417
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  • 1 POST
Happy Holidays from Missouri! Driving to my parent's place this week I noticed a problem. When I start my car the RPMs rev up to 2000 - 2500 and then quickly drop to around 500. It continues to spike and dip 6-8 times before eventually leveling out to around 1000 RPMs where it should be. This problem does not persist while driving and applying acceleration, but does when I release my foot from the gas while slowing down or coming to a stop. Any help would be greatly appreciated, god bless.
Dec 26, 2015 at 10:35 AM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
there is a valve called the idle air control valve. it controls the idle and is a common failure. it is on top of the throttle body and is held by 2 8mm bolts and an electrical connector. you can get it at any parts store.

Roy
Dec 26, 2015 at 11:28 AM