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Old 07-15-2010, 08:52 PM   #1
soloxplorer
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Camellia Red Pearl

Default Is this normal A/C operation?

I have a 2010 Impreza 2.5i with less than 2,000 miles on it and I've ran into this issue with the A/C everytime I use it. Under deceleration, the air isn't as cold and gets that signature smell that the A/C has been shut off but as soon as the engine is chewing fuel the A/C kicks back in. Is this normal or does this call for a warranty claim?
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Old 07-15-2010, 09:22 PM   #2
424wrx
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the compressor clutch kicks on and off as needed. the colder you have the setting the more it runs. keep it on recirulating air after it first gets cool and it will be colder too.
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Old 07-15-2010, 09:46 PM   #3
soloxplorer
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The thing is, I've had it on recirc and the fan blasting on 4 and it still does it. It's like it doesn't matter the settings too, soon as I lift off the throttle it feels like the A/C cuts out (but not completely). It would make sense to do so when I'm going WOT, but during engine braking where there is little to no fuel being used, seems silly to have the A/C cutout here.
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Old 07-16-2010, 02:51 PM   #4
nobletea
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Quote:
Originally Posted by soloxplorer View Post
The thing is, I've had it on recirc and the fan blasting on 4 and it still does it. It's like it doesn't matter the settings too, soon as I lift off the throttle it feels like the A/C cuts out (but not completely). It would make sense to do so when I'm going WOT, but during engine braking where there is little to no fuel being used, seems silly to have the A/C cutout here.
I agree and it sounds contrary to what the owner's manual states, if I remember right. There's a quick blurb somewhere in there about the AC cycling on and off at different times to conserve fuel/increase MPGs. You might want to double check the manual but it does seem like it should only do it when you are accelerating.

However, keep in mind that braking uses more fuel than coasting, so who knows.
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Old 08-04-2010, 02:05 AM   #5
Henry H
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Quote:
Originally Posted by nobletea View Post
However, keep in mind that braking uses more fuel than coasting, so who knows.
Not quite. Braking is does not use more fuel, it simply wastes whatever fuel that was already used to accelerate or maintain a constant speed.

Anyways, your problem should get checked out. I've never experienced this at all. My AC compressor turns off at higher revs not even at WOT.
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Old 08-04-2010, 05:48 AM   #6
04trailsti
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My 08 2.5i seemed to be doing the same thing then a few months later we found out the evaporator under the dash had a leak in it. We took it to the dealership and they used some dye in the a/c lines and replaced it under warrenty
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Old 08-05-2010, 02:21 PM   #7
sstaurus
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Seems to be a common complaint throughout many subaru models, just the nature of their A/C systems I guess, mine does it too. The consensus seems to be there is no fix and as long as it cools overall, don't throw $$ at it

Everyone brings up the 'compressors are supposed to cycle' argument, but what car have you ever had that cycles every 5-10 seconds?
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Old 08-10-2010, 10:56 PM   #8
scoopburt
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Quote:
Originally Posted by nobletea View Post
I agree and it sounds contrary to what the owner's manual states, if I remember right. There's a quick blurb somewhere in there about the AC cycling on and off at different times to conserve fuel/increase MPGs. You might want to double check the manual but it does seem like it should only do it when you are accelerating.

However, keep in mind that braking uses more fuel than coasting, so who knows.
Thanks for Reading the owners manual. I'm not completely through it yet. This was driving me nuts every time I accelerated hard the AC got hot. Now I know why.

No problems on the decel though.
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Old 08-11-2010, 10:16 AM   #9
izzay
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Just to confirm:
"To improve acceleration and gas mileage,
the air conditioner compressor is designed
to temporarily shut off during air conditioner
operation whenever the accelerator
is fully depressed such as during rapid
acceleration or when driving on a steep
upgrade."
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Old 08-11-2010, 12:34 PM   #10
soloxplorer
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Quote:
Originally Posted by izzay View Post
Just to confirm:
"To improve acceleration and gas mileage,
the air conditioner compressor is designed
to temporarily shut off during air conditioner
operation whenever the accelerator
is fully depressed such as during rapid
acceleration or when driving on a steep
upgrade."
I noticed this and was actually half-expecting it to happen, so it was no real surprise to me when the A/C cutoff under hard acceleration.

Thank you everyone for the feedback, I think I might have to take the car into the dealer on a hot day to have the A/C looked at.
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Old 08-12-2010, 03:50 PM   #11
Gonzo_TFTD
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My 08 wrx started doing this and "poof" ac compressor went out.

Even in this lovely Texas weather I usually don't crank the AC all the way up (unless the wife is in the car, lol.) It's pretty babied.

With only 46k on the odo I was not happy. I just got it back from the dealer due to the 3/4 syncros taking a dump.

Our Subaru dealer down here is great so it was handled asap.
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