Increased RPMs on A/C
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Joined: Dec 2010
Posts: 37
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From: Texas
My Ride: Mine: 2005 545i Sport Pkg, Black Saphire/Black, Nav, Chrome Wheels ---------- Wife's: 2007 335i Sport/Prem Pkg, White/Auburn, Nav
My 545i normally revs at 500 -- but as soon as I turn on the A/C it moves up to 750 rpms. It doesnt sound like a lot but even just going into my garage it feels like the car is being pushed. Any idea what would cause this? Anybody else have this issue or have had it repaired before? Thanks for your input.
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From: Atlanta, GA
My Ride: 2008 535i:
(8/07 Build) Metallic Bronze, Beige NASCA Leather, Ventilated Seats, Sport Pkg, Cold Wxr Pkg, Logic-7 Sound, HUD, Night Vision, PDC, Split Rear Seats, NAV, Premium Pkg, Comfort Access, HD Radio, Sport Auto Trans
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1992 Camaro RS:
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What you described is normal. Turning on the A/C engages the compressor clutch which puts a heavier load on your engine. the idle should raise slightly to compensate.
500rpms @ idle without the A/C seems a bit low...
500rpms @ idle without the A/C seems a bit low...
Thread Starter
Members
Joined: Dec 2010
Posts: 37
Likes: 0
From: Texas
My Ride: Mine: 2005 545i Sport Pkg, Black Saphire/Black, Nav, Chrome Wheels ---------- Wife's: 2007 335i Sport/Prem Pkg, White/Auburn, Nav
Really? Ok, I guess I thought I had an issue. It just feels like it should be smoother than that--and add to that the transmission slam and 
. I dont believe our 335i does that.
. I dont believe our 335i does that.
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