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Engine issues while idling
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bmaher287
New User
May 27, 2013, 11:56 AM
Post #1 of 5
(1260 views)
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Engine issues while idling
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Hey guys, I drive a 1999 Kia Sportage with 84,000 miles on it and recently the engine has been running rather odd. When I start the car, sometimes the engine will rev really high up to like 3000 rpm until I put it in reverse or drive. Also, lately when I am in drive and I stop, or slow down so it drops below 1000 rpm the engine will kind of rev down to 500 and then back to 1000. This causes the engine to kind of shake and has once caused it to shut off. Now I put it in neutral when I stop. Does anyone know what it could be?
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bmaher287
New User
May 27, 2013, 12:17 PM
Post #2 of 5
(1248 views)
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Re: Engine issues while idling
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Oh ya and the engine is 2.0 L 4 cylinder
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Hammer Time
Ultimate Carjunky
/ Moderator
May 27, 2013, 12:25 PM
Post #3 of 5
(1238 views)
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Re: Engine issues while idling
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You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and 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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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bmaher287
New User
May 30, 2013, 11:58 AM
Post #4 of 5
(1153 views)
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Re: Engine issues while idling
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I haven't had a chance to do this yet, but a couple of days ago the check engine light came on, so I went to O'Reilly and the code was p0101 which is mass or volume air flow circuit range/performance. The employee told me the mass air flow sensor was most likely dirty so he told me to buy a can of cleaner and clean the sensor. I did that and still had problems, and today the light came on again, so I went back in and it was the same code. I reset the computer so it would clear the code, but could this issue be related to the idle issues?
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Hammer Time
Ultimate Carjunky
/ Moderator
May 30, 2013, 12:50 PM
Post #5 of 5
(1150 views)
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Re: Engine issues while idling
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The one thing it likely wouldn't be is dirty. It could be a bad sensor, wiring, bad computer, plugged exhaust or intake snorkel leaking. It requires some testing.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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