Welcome to the North American Subaru Impreza Owners Club Thursday September 29, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 08-14-2016, 10:53 AM   #1
Jaksubirs
Scooby Newbie
 
Member#: 191586
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Philadelphia
Vehicle:
2004 WRX Wagon
Aspen White

Default AC Compressor Issue (Advice Appreciated)

UPDATE: Fixed. Too much pressure/freon in system ended up being the culprit. Thanks again to all who contributed.

Original Post:

Hello all, thanks for taking a moment to check out this post.

So at the most inopportune time, one of the hottest weeks of the year here in eastern Pennsylvania, my AC Compressor is not producing cool air. Worked flawlessly for the entire time I've owned the car, just began acting up out of the blue one afternoon.

My car: 2004 WRX Wagon, stock motor.

I've inspected the pulley and the clutch, noticing that the pulley spins freely as it should, but the clutch will stop intermittently.

From what I've gathered the clutch is engaged/disengaged by an electronically charged magnet that pulls it in to engage and releases it to disengage. Correct me if I'm wrong.

Anyone with experience know how I should go about troubleshooting this?

Ideally I am looking to fix it, in hopes that the entire compressor isn't shot. Otherwise a new compressor isn't cheap.

I appreciate any suggestions/help I can get from you guys.

Cheers,

JD
* Registered users of the site do not see these ads.

Last edited by Jaksubirs; 08-16-2016 at 08:11 AM. Reason: Problem Solved!
Jaksubirs is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 08-14-2016, 12:48 PM   #2
monkeyposeur
Scooby Specialist
 
Member#: 333468
Join Date: Sep 2012
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
1993 SS
03 WRB GD 205/22T 20G-XT

Default

monkeyposeur is offline   Reply With Quote
Old 08-14-2016, 01:42 PM   #3
penusai
Scooby Specialist
 
Member#: 102808
Join Date: Dec 2005
Chapter/Region: Tri-State
Location: Queens, NY
Vehicle:
1995 Built EJ207 6sp
30r ***breaking in***

Default

Did you try going to a shop to see how much freon is in the system?
penusai is offline   Reply With Quote
Old 08-14-2016, 03:50 PM   #4
Samurai Jack
Scooby Specialist
 
Member#: 21145
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Not in my own time
Vehicle:
2002 Enemy of Aku

Default

Quote:
Originally Posted by monkeyposeur View Post
Before you start taking things apart, there ins one other simple thing you can try:

Over time, rust will build up between the clutch pulley.
Blow all around the A/C clutch w/compressed air. It will blow out the rust.

Takes a couple of minutes to do
Wear a mask because a LOT of rust is going come out.
Samurai Jack is offline   Reply With Quote
Old 08-15-2016, 09:58 AM   #5
anawfulnumberis2
Scooby Newbie
 
Member#: 37414
Join Date: May 2003
Chapter/Region: MWSOC
Location: Peoria, IL
Vehicle:
2004 Impreza WRX
Silver

Default

I second the freon thought... my 04 wrx's AC clutch wouldn't kick on until I added more freon, which initially made me think I had a compressor clutch issue.
anawfulnumberis2 is offline   Reply With Quote
Old 08-15-2016, 10:31 AM   #6
HoosierBuddy
Scooby Newbie
 
Member#: 443465
Join Date: Mar 2016
Location: Southern Indiana
Vehicle:
2004 WRX
Silver

Default

Sounds like your compressor is kicking off on the low pressure limit, then pressure builds and resets the pressure switch allowing the compressor to come back on, then it pumps the low side too low again and kicks off. Repeat indefinitely.

If it was me, I'd buy a can of freon and the gauge kit at the auto parts store, read the instructions and follow them, adding freon if called for by the gauge.

I'd say there's a 95 % chance that'll get you going the rest of the summer.

Of course...as the next poster below will point, out...you'll still have a freon leak so you haven't fixed anything...blah blah blah....and really you ought to take it into a garage, have the system checked out, evacuated, die put in, recharged, rechecked, fixed, pulled down again, refilled with freon and oil again...etc.

That second way has never cost me less than $500. That's why I would try the can first.

Phil
HoosierBuddy is offline   Reply With Quote
Old 08-15-2016, 11:20 AM   #7
Samurai Jack
Scooby Specialist
 
Member#: 21145
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Not in my own time
Vehicle:
2002 Enemy of Aku

Default

Quote:
Originally Posted by HoosierBuddy View Post
Of course...as the next poster below will point, out...you'll still have a freon leak so you haven't fixed anything...blah blah blah....and really you ought to take it into a garage, have the system checked out, evacuated, die put in, recharged, rechecked, fixed, pulled down again, refilled with freon and oil again...etc.

That second way has never cost me less than $500. That's why I would try the can first.

Phil
All depends on who services your vehicle. You should check around your area for competent mechanics and pricing.

I've had the above cost me:
- $250 @ a Dealer
- $ 90 @ LOCAL mechanic
- $ 0 @ my body shop but that is because I am a very good customer and I send a lot of business his way

... and I have been told from multiple sources NEVER to use that Freon in a can stuff because it can be harmful to your A/C system, resulting in an expensive fix. It is not really approved to use in your A/C system. It is sold because people will buy it because it is cheaper than getting an A/C service.
Samurai Jack is offline   Reply With Quote
Old 08-15-2016, 11:42 AM   #8
monkeyposeur
Scooby Specialist
 
Member#: 333468
Join Date: Sep 2012
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
1993 SS
03 WRB GD 205/22T 20G-XT

Default

The gauges on the cans don't worth a damn so you can overload your system and possibly break everything. I tried a can once and put waaaay to much refrigerant in my compressor. I'll never use one again. If you want to charge the system yourself get a real set of gauges.
monkeyposeur is offline   Reply With Quote
Old 08-15-2016, 11:59 AM   #9
HoosierBuddy
Scooby Newbie
 
Member#: 443465
Join Date: Mar 2016
Location: Southern Indiana
Vehicle:
2004 WRX
Silver

Default

Saw those replies coming a mile away. Thanks for not disappointing me.

Funny this came up, because my kid's car (not a subaru) is at my mechanic's this morning to have the heater core replaced. As this requires dash disassembly and the evaporator is 27 years old now, he's replacing it at the same time.

He's going to try to find where the freon is going to from the 2-year old R134 retrofit system at the same time. It's been taking 1 can per year to keep it working well.

The book labor for this job is 8 hours just for the heater core. Again...I bet I don't get this job finished for less than $500 labor....and based on my freon sniffer at home...the leak is on the back side of the new compressor...not the 27 year old evaporator. I do admit that the second can I put in was after I had disconnected the heater core and knew the entire system was going to have to get pulled down very soon. The kid had a job interview the next day and he needed a/c in his car as it was a 2 hour drive and 100 degrees out. You do what you got to do. I didn't have a way to evacuate the system or any spare o-rings at home for the compressor...so I used the can and it worked. That's how they sell all those hundreds of cans btw. They sell them to the same people every year. Eventually it probably will ruin the system...but by that point they've likely traded it on down the line to the next person.

Phil

Last edited by HoosierBuddy; 08-15-2016 at 12:06 PM.
HoosierBuddy is offline   Reply With Quote
Old 08-15-2016, 01:11 PM   #10
Jaksubirs
Scooby Newbie
 
Member#: 191586
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Philadelphia
Vehicle:
2004 WRX Wagon
Aspen White

Default

Thanks for the responses, it is important to note, that when the clutch is engaged and spinning, the air is cool. On start up, while idling, it will spin and functuon perfectly fine for about 5 minutes before the clutch stops again intetmittently.
Jaksubirs is offline   Reply With Quote
Old 08-15-2016, 02:08 PM   #11
anjuna
Scooby Specialist
 
Member#: 401977
Join Date: Sep 2014
Chapter/Region: TXIC
Location: Houston
Vehicle:
IDFK Wat
bish whet

Default

Quote:
Originally Posted by Jaksubirs View Post
Thanks for the responses, it is important to note, that when the clutch is engaged and spinning, the air is cool. On start up, while idling, it will spin and functuon perfectly fine for about 5 minutes before the clutch stops again intetmittently.
High head pressure.

Check pressures via gauges.

Make sure both radiator fans are blowing. If they are, add/remove freon as needed.

/thread.
anjuna is offline   Reply With Quote
Old 08-16-2016, 08:08 AM   #12
Jaksubirs
Scooby Newbie
 
Member#: 191586
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Philadelphia
Vehicle:
2004 WRX Wagon
Aspen White

Default

Quote:
Originally Posted by anjuna View Post
High head pressure.

Check pressures via gauges.

Make sure both radiator fans are blowing. If they are, add/remove freon as needed.

/thread.
Yeah you nailed it man. I checked the pressure in the low side port and it was WAY too high. Vented from the low port until the clutch engaged and stayed. AC officially fixed. /thread indeed, thank you sir.
Jaksubirs is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 02:57 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.