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Car is reving up when taken out of drive

Tiny
MJAC8204
  • MEMBER
  • 2004 BUICK RENDEZVOUS
  • 129,000 MILES
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?
Tuesday, August 7th, 2012 AT 6:12 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Could be a vacuum leak or the idle control motor is malfunctioning

Roy
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Tuesday, August 7th, 2012 AT 6:26 PM
Tiny
MJAC8204
  • MEMBER
  • 12 POSTS
Is this expensive to fix? Can I do it myself?
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Tuesday, August 7th, 2012 AT 6:39 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Tuesday, August 7th, 2012 AT 6:45 PM
Tiny
MJAC8204
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  • 12 POSTS
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?
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Tuesday, August 7th, 2012 AT 6:51 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Tuesday, August 7th, 2012 AT 7:21 PM

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