Car is reving up when taken out of drive

2004 BUICK RENDEZVOUS
129,000 MILES
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MJAC8204
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When I take my car out of drive it starts to rev up. It goes from idle in drive to 3 rpms when taken out of drive. What is going on?
Aug 7, 2012 at 6:12 PM
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ASEMASTER6371
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could be a vacuum leak or the idle control motor is malfunctioning

Roy
Aug 7, 2012 at 6:26 PM
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MJAC8204
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is this expensive to fix? can I do it myself?
Aug 7, 2012 at 6:39 PM
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ASEMASTER6371
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look around for any hoses off while running or listen for a whistling noise.

the iac motor, if bad, is about 140 and 1 hour in labor.

lets try to find the failure first.

Roy
Aug 7, 2012 at 6:45 PM
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MJAC8204
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I will be able to check this tonight when I get home from work. I work about 50 miles from home. Is it save to drive on the highway? What if there is a whistling noise? What if there isn't?
Aug 7, 2012 at 6:51 PM
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ASEMASTER6371
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if it whistles, then there is a vacuum leak. if it does not, then there is something else wrong.

let someone help you if you are not sure.

Roy
Aug 7, 2012 at 7:21 PM