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Old 09-16-2014, 07:17 PM   #1
hahaman86
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Air conditioning gets warm when rpms go up

I've noticed lately in my 13 frs 10 series, when I have the ac on and cold air is blowing out of it, that if I go from stop to accelerating and my rpms go higher than 3k-4k the air gets warm. Has anyone else had this issue? Every other car I've owned it's usually the opposite effect where when the rpms go up the air gets cooler.
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Old 09-16-2014, 07:24 PM   #2
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I've noticed lately in my 13 frs 10 series, when I have the ac on and cold air is blowing out of it, that if I go from stop to accelerating and my rpms go higher than 3k-4k the air gets warm. Has anyone else had this issue? Every other car I've owned it's usually the opposite effect where when the rpms go up the air gets cooler.
Are you recirculating the air or having fresh air come in?
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Old 09-16-2014, 07:37 PM   #3
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Is your car blowing cold before this happens?
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Old 09-16-2014, 07:40 PM   #4
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I thought I read somewhere on these forums that our AC compressor shuts off temporarily when the engine is under heavy load so as not to rob it of power when it is needed most.

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Old 09-16-2014, 09:56 PM   #5
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I thought I read somewhere on these forums that our AC condenser shuts off temporarily when the engine is under heavy load so as not to rob it of power when it is needed most.
If you're light on the throttle, it should make no difference.. If you're more than 80% throttle (I think it's 80%), the AC compressor shuts off to free power.
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Old 09-16-2014, 09:57 PM   #6
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I notice my ac gets warm after around 110 mph
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Old 09-16-2014, 11:06 PM   #7
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Welcome to a four cylinder
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Old 09-17-2014, 01:32 AM   #8
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If you're light on the throttle, it should make no difference.. If you're more than 80% throttle (I think it's 80%), the AC compressor shuts off to free power.
Yep, plus the high speeds tend to wear the compressors out early.

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Nope, they've been doing this for years on many different cars. Most notably on Fords, even the V8's.
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Old 09-17-2014, 01:41 AM   #9
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Yeah the air is cold before this happens and I am recirculating the air. I hope it's what everyone's saying about the condenser shutting off. I have noticed it happens when I'm flooring it. I wonder if it says anything about it anywhere? I've Google searched it and read the manual but nothing about the condenser.
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Old 09-17-2014, 07:24 AM   #10
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All modern A/C compressors turn off at high RPMs/high engine load (close to WOT) to protect itself.
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Old 09-17-2014, 09:04 AM   #11
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Just go get your AC checked.... should be under warranty. DIY is easy too just to check pressure.
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Old 09-17-2014, 09:07 AM   #12
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Just go get your AC checked.... should be under warranty. DIY is easy too just to check pressure.
OP's A/C isn't broken. I am willing to bet that the cold air comes back as soon as he/she lifts off the throttle.
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Old 09-17-2014, 10:13 AM   #13
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Still good to check just in case. Takes 5 min. At least you can definitively rule out that error.
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Old 09-17-2014, 01:00 PM   #14
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I'm under warranty so I'm just going to take it to the dealer and have them look at it might as well get my car cleaned while I'm there thank you all for the fast responses I love this forum
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