Jump to content

Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse

- - - - -

ac compressor

ac compressor squeals

  • Please log in to reply
4 replies to this topic

#1 used car

used car

    New User

  • Members
  • PipPipPip
  • 68 posts
  • jerseyville,il.

Posted 16 June 2013 - 10:18 AM

When ac compressor engages it will squeal loud .Not all the time but enough. Is it the clutch?or something else.I don't use ac i'm afraid it will break belt. Need your help it's getting getting hot here in illinois.  Thanks!

#2 SmashedGlass


    Eat, Live, Breath Subaru

  • Members
  • 669 posts
  • From CO, stuck in FL

Posted 16 June 2013 - 11:06 AM

Probably is the clutch going out. Run it til  it blows! But save $$ for a replacement.

#3 Loyale 2.7 Turbo

Loyale 2.7 Turbo

    The Mighty "BumbleBeast"

  • Members
  • 7,351 posts
  • Roatán, Honduras.

Posted 16 June 2013 - 11:44 AM

Beside that the Fact that those A/C Compressors are Hard to Turn once engaged, there's a Good Chance that your engine has Dry / Old \ Loose Belts.


I Kindly suggest you to Check that Belt and change 'em if needed.


Kind Regards.

#4 scoobiedubie


    USMB is life!

  • Members
  • 604 posts
  • Aloha, Oregon

Posted 16 June 2013 - 01:32 PM

It is worth the $$$risk of buying some R134a AC compressor oil, as it could also be the guts needing some oil.

#5 mdcc2010


    USMB Regular

  • Members
  • PipPipPip
  • 53 posts
  • Georgia

Posted 05 July 2013 - 10:23 PM

Check belt tension first. Then, try to turn the compressor center hub by hand: if it's really difficult to turn, then it's likely running dry and/or getting close to the end of its service life. If your car has no power and wants to stall at idle with the compressor engaged, it would be in your best interest to quit running it: it's much easier to clean out the lines and replace a not-quite-dead compressor than it is to try to get all of the debris from a completely failed compressor.


My RX-7's compressor was locked up when I bought it, so replacing it included removing all components and flushing them in addition to a rebuilt compressor, new o-rings, a new receiver/dryer (which should always be replaced with a conversion from R12 to R134 because of the dessicant differences) and a new expansion valve. ACDelco makes a liquid line refrigerant filter that will prevent any debris coming from a failing compressor (or stuck in the condenser from the last failure) from flowing through the rest of the A/C system and traveling to the compressor's suction port and hastening its demise; I installed one just in case (rebuild compressors apparently don't have the best reputation).

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users