Short Cycling AC compressor - Subaru Forester Owners Forum
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post #1 of 1 (permalink) Old 07-14-2008, 06:54 PM Thread Starter
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BoulderDude's Avatar
Join Date: May 2008
Location: Boulder, CO
Posts: 18
Car Year: 2009
Car Model: 2.5X LL BEAN
Feedback Score: 0 reviews
Short Cycling AC compressor

Taking my 09 into the dealer tomorrow for a check on a short cycling AC compressor...1600+ miles...

Cycles every 20 seconds / off / on...and no water drips from beneath the car after the AC has been run for a while and then the car is parked...

Also reported as an issue on 08 Outbacks on the outback forum...

Also a known issue on earlier 20xx models of the H6 versions of the Outback...

Symptoms are the compressor coming on / off every 20 seconds, and the air blows from cold to luke warm to cold...

Could be low on refrigerant, a plugged condensor, an open circuit on the magnetic clutch / revolution sensor, etc...

I will report back on solution and satisfaction of the dealer handing of the issue.


Report following service check - NTF; it does cycle ( evidently designed to do that to prevent freezing up of the water in the evaporator )...

Also noted that the newer 134 does warm up a bit faster than the R12 when not being compressed...hence the notice of slightly warmer air when the compressor cycles off.

Dealer service department was very gracious; no issues..

27 square miles surrounded by reality

Last edited by BoulderDude; 07-15-2008 at 04:11 PM.
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