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Tiny
MACAMB
  • MEMBER
  • 2011 KIA
  • 3.5L
  • V6
  • FWD
  • AUTOMATIC
  • 49,709 MILES
Hello there I have a kia cadenza 2011 when I turn on the ac the car seem to run faster is that normal? Thanks
Wednesday, January 13th, 2016 AT 11:14 PM

5 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Most A/C systems have an idle step up as the A/C clutch is activated, this is to maintain a stable engine idle.
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Thursday, January 14th, 2016 AT 1:01 AM
Tiny
MACAMB
  • MEMBER
  • 3 POSTS
I doubt that just wanted to make sure there is no problem.

So this is normal I dont have to worry?
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Thursday, January 14th, 2016 AT 1:09 AM
Tiny
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As long as the engine is not racing and the idle up is controlled by the A/c going on and off that's fine. If you have the actual engine rpm change that would confirm this for me.
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Thursday, January 14th, 2016 AT 12:38 PM
Tiny
MACAMB
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  • 3 POSTS
Yea I can see the rpm is rising a little bit.
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Thursday, January 14th, 2016 AT 12:55 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
It is is just up a tad and drops with the A/C turned off that is fine
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Monday, January 18th, 2016 AT 12:35 PM

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