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Old 07-12-2003, 04:52 PM   #1
blackbok
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Default Air conditioner problems

I was driving today w/ my AC on full blast, with the airflow set to "open". As I was adjusting the radio, I noticed some mist coming from the vents, like breath on a cold day. I shut off the fan, turned it back on, and more "steam". I felt it and it was still cold. It did that for about 20 seconds then stopped.
After stopping, the airflow was noticeably weaker, and the air was just barely cool as opposed to cold. I was in traffic and dying.

So I suffered and shut it off for about 15 minutes, until I got out of the horrible traffic jam I had been in for 1.5 hours.

I got to a dell taco drive through and tried it again. The air was back to full power, and it got cold quick. Everything now seems normal.

Does anyone know what may have caused this malfunction? I don't want it to return when I am say halfway to Vegas in 115 weather.

My engine mods are a Cobb intake, and a lightweight (not underdriven) crank pulley.

Any help or advice is greatly appreciated
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Old 07-12-2003, 10:38 PM   #2
dpmurraygt
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Old 07-13-2003, 01:09 AM   #3
DrD
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The mist is pretty normal for an ac which is cycling - you get condensation on the evaporator which blows into the passenger compartment - if the evaporator gets too cold, that condensation can freeze and slow air flow - as already indicated, there is a tsb about this one (or you can move to the desert... I don't have too many "condensation" problems... hard to have when the RH is under 20 most of the time you would run the AC
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Old 07-17-2003, 09:34 AM   #4
LordBass
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Default Re: Air conditioner problems

Quote:
Originally posted by blackbok
I got to a dell taco drive through and tried it again
The tacos must've saved the day.

I'm with DrD - if the condenser (? evaporator?) freezes and you turn it off, the ice "melts" and the AC will work again.. I'm no expert but it sounds a reasonable guess. Run the problem by your dealer & ask about the TSB.

lb
www.trancelab.com
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Old 07-17-2003, 08:25 PM   #5
blackbok
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Default Re: Re: Air conditioner problems

Quote:
Originally posted by LordBass
The tacos must've saved the day.

I'm with DrD - if the condenser (? evaporator?) freezes and you turn it off, the ice "melts" and the AC will work again.. I'm no expert but it sounds a reasonable guess. Run the problem by your dealer & ask about the TSB.

lb
www.trancelab.com
Man, i think I actually melted the ice after those tacos .

i called my dealership and ran it by the service manager. i said that their was a TSB out on this problem, but she said she never heard of it and that no other imprezas had EVER been through their w/ that problem.

I was hoping they could just order parts and throw them in as I waited, so I don't have to drop off the car overnight. Wouldn't be an issue if SOA would spring for freakin' loaner cars on WARRANTY WORK!

ANyhow, I've only run the AC for (aprox)20 minutes at a time since the problem... everywhere i go is usually 30 mins. max. i just want to resolve this before any kind of road trip.
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Old 07-17-2003, 09:58 PM   #6
Jon [in CT]
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Your problem is likely another manesfestation of thread A/C Freezing up?.
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Old 07-18-2003, 12:23 AM   #7
blackbok
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Quote:
Originally posted by Jon [in CT]
Your problem is likely another manesfestation of thread A/C Freezing up?.
Yea, I know that thread. Great info man. I am going to print that out and take it to my dealership.

Thanks!
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Old 07-21-2003, 06:39 PM   #8
Wires
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Forgive me if this post is on the wrong thread.

I think the "cure" for the icing problem is worse than the problem. The evaporator (cold) coil will freeze if the humidity is high, and or if the fan speed is low. The 2002 and early 2003 WRXs have this problem.

The factory fix is to install a new temp switch, which switches off the compressor at a higher temp and thus no freezing.

Unfortunately, this results in the blast of hot air on very warm days, and the "Cycling" that some have complained about.

I'd rather have the icing problem - I can turn off the compressor when icing occurs, and also have a more effective air conditioner.

I'll bet there are a lot of folks with the "old" style that wonder why people with the mod are complaining about the air conditioner.

These are just my thoughts about it.

Can you guess I've got the newer type? It was 93 degrees last Saturday, and I was hot inside my new car. I took it to the dealer, and they say it's working fine.

I love the car, but I can't own a "three season" car - especially with the hot summers in Georgia. I don't see how anyone in Arizona where it's REALLY hoy can stand it. (new type, a dry climate like Arizona needs the new style (anti icing) like a hole in the head. No water = no ice!!)
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Old 07-21-2003, 11:01 PM   #9
blackbok
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So please elaborate. What exactly will the "cycling" effect? And, how often will it do this? In so many words, I take it people would rather have my "problem" than the fix?

I just want to be clear on both sides... leaving the prob alone or taking it in. I want my car obviously to run as good as possible (duh). So if the new "fix" is lame, forget it.

Man, cannot understand SOA. Sure we'll fix it... WORSE!
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Old 07-22-2003, 08:02 AM   #10
Wires
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I think I have the same problem mentioned in the other "AC problem" thread - where one user describes the "cycling" problem that I seem to have, while anther seems to misunderstand and think it's the icing problem. (Or I may be misunderstanding.)

With every other Air Conditioned car I've owned or even ridden in, I've never been aware of the air compressor being turned on and then turned off. (cycling) I've heard the compressor in some police cars idling with the AC on, but I've never noticed when I'm in the car.

With the WRX, it's different. I turn the air on, and it takes some time for the air to get cold. Then, just as the air gets good and cold, it begins to get warmer. If the sun is shining, the air feels warm, if it's cooler or cloudy, the air never seems to get "warm" but simply gets "less cool."

I tried to time it, but I was driving so it's just a guess. It seems to run the compressor for about 4-8 seconds, then off for about 8-10 seconds.

I was hoping it was either over or under charged, but the dealer mechanics said that it was fine. Now I wonder if he didn't just stick the thermometer in the duct, read under 50 degrees, and then call it OK without even hooking the gauges.

I will have to get some wire and my voltmeter and determine if it is the temp switch causing the compressor to turn off or the refrigerant pressure switch. Then I'll know more.

To be fair, it could be that mine is just defective and the "new" AC is OK.

I read others with the same problem I have, and I see others that don't have a problem. It's complicated by the fact that we all live in different climates, all have different personal preferences, and I know there are at least two car variations.

Unfortunately, I live far away from a Subaru dealer, and I may have to take it to one further away for a better diagnosis - but I'm afraid that they will tell me the same thing, and I'll waste another day.
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Old 07-22-2003, 10:40 AM   #11
2k2
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Im baaackkk lol....

Do a search under my name in this forum. I have replied to these posts many times. I had these problems only mine was worse... I had no cold air and a leak in a hidden high pressure line ot boot.

My dealer gave me the runaround over and over. They replced my whole condensor and refilled it numerous times and eventually did a extensive leak test and found the leak. Now its FREEEZING cold even on hot days I dont need it to be set on 4 because I will get cold.

It takes maybe 5 seconds to get cold and cycles a little but is always cold. Because I got anew condensor I thank this is where everyone elses problem lies.

I will try to talk more later I gotta run but I suggest you search for my name on this forum in the last 6 months.

Bryan
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Old 07-27-2003, 05:00 PM   #12
italy wrx
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Default a/c performance

I am also having a/c performance issues with my 03 wrx.I have tried to evac/re-charge system , but a/c vent temps. go from 46-50 degrees as compressor cycles. The compressor cycling is not an issue because Toyota also cycles their compressors, but without the large difference in vent temps. This sounds like more of a thermister or a/c amplifier issue. By the way I live in Phoenix (possibly heaviest heat load placed on this a/c system, 110-117 degrees this past week)
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Old 08-04-2003, 12:46 PM   #13
Wires
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I took it to another dealer - who essentially told me the same thing. Cycling is Ok, so is the large temperature change.

At least, the second dealer did check my R-134 level, and pulled a vacuum on my system to check for leaks.

I can't make them understand that freon level is not the only controlling factor - I could have a defective temperature switch, or the computer could be defective.

I know there are people who are cofortable with the AC the way it is. There are people who are confortable with NO ac in their cars. But compared to every other car I've driven or ridden in, the Subaru air conditioner is not as capable, and does not cool the car adequately, in my opinion.

I want an early 02 thermal switch installed, but I doubt Subaru will do that under warranty. I know enough to turn the compressor off when there is evap. coil icing - why make everyone suffer because a few people don't?
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