2005 Honda Civic Air Conditioning Revs Down

35,000 MILES • 4 CYL • FWD • MANUAL
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AGONZALES
  • MEMBER
  • 1 POST
the problem is on a Honda Civic 2005 3dr SI Hatckback.
Normally when the a/c is working well and is turned on there's no problem with engine revs and it's almost transparent, "something" control the engine revs to avoid them down. In my case "something" doesn't work because it feels like the a/c get power from engine and the revs coming down causing engine vibration and the feeling the engine will power off. It only happen when a/c is on. I hope somebody can give me a tip to solve it....

best regards
Mar 30, 2009 at 10:21 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Hi AGonzales,

Quite often when the Intake AIr Control valve or throttle body air passage is restricted, the AC operations would affect the idling speed.

Get the throttle body and IAC cleaned and it should solve your problem unless you have a Check Engine Light showing?
Apr 7, 2009 at 5:36 PM
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