AC

2011 KIA
49,709 MILES • 3.5L • V6 • FWD • AUTOMATIC
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MACAMB
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  • 3 POSTS
hello there i have a kia cadenza 2011 when i turn on the ac the car seem to run faster is that normal ? thanks
Jan 13, 2016 at 3:14 PM
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MHPAUTOS
  • ✓Experienced 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.
Jan 13, 2016 at 5:01 PM
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MACAMB
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  • 3 POSTS
i doubt that just wanted to make sure there is no problem .

so this is normal i dont have to worry ?
Jan 13, 2016 at 5:09 PM
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MHPAUTOS
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  • 31,937 POSTS
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.
Jan 14, 2016 at 4:38 AM
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MACAMB
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Yea I can see the rpm is rising a little bit.
Jan 14, 2016 at 4:55 AM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
It is is just up a tad and drops with the A/C turned off that is fine
Jan 18, 2016 at 4:35 AM
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