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  #21  
Old 07-15-2015, 10:23 AM
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Thanks for all your replies. Just wanted to clarify that after driving I checked the aux fan while the car was stopped in the garage with no air blowing into it. I then turned off the AC and the Aux fan stopped and turning it AC back on started the aux fan again. This was done when the car was stationary. Also someone had mentioned that I could test the Aux fan with test tools? I have INPA, will that help test?
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  #22  
Old 07-16-2015, 03:23 AM
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Quote:
Originally Posted by garfield81 View Post
I have been seeing couple of things related to the air conditioning on my X and wanted your advice before I start working on it.

1.) For the past week the air conditioning takes a couple of minute to start blowing cold air when starting the car first thing in the morning. After that the air conditioning seems to work fine for the remainder of the day. Searching through the forums I found that this is possibly related to the compressor and the compressor might need replacing.

2.) During a long trip over the weekend the air conditioning suddenly stopped blowing cold air (it was cool but not cold) and fan speed on max wouldn't feel as it was blowing as much of air. After a stop over and shutting down and restarting the car everything seems to be normal. Searching for this on the forums it looks like I possibly need to recharge the air conditioner (which someone mentioned would indicate a leak since you never need to recharge). And for the fan speed it sounds like the FSR needs to be replaced.

All in all it looks like I potentially need a new compressor and/or recharge the air conditioner and a new FSR. So the question is should I be replacing them in a certain order like FSR first or recharge the system first to avoid replacing good parts?
I have the same symptoms with my E39, I replaced the FSR and no issue after.
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  #23  
Old 07-26-2015, 12:02 AM
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Finally got a chance to hook up INPA. First read codes and saw nothing related to cooling/Aux fan. The. Tried manually activating aux using INPA and was unable to do so. INPA showed aux on but the fan was not moving. AC was not blowing cold either. Went for a drive and the cold air started blowing and so did the aux fan. So it sounds like the aux fan is bad. But wouldn't the ECM have codes stored regarding it if it was bad?

Also I found a Behr Aux fan at FCPEuro for $360 and free shipping. Sounds too cheap to be true! Is that legitimate site?
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  #24  
Old 07-26-2015, 01:02 AM
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FCPeuro is a legitimate site. If you shop around you'll find that Behr aux fan is about that price.
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  #25  
Old 07-26-2015, 04:23 PM
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Quote:
Originally Posted by trader4 View Post
You would think a code would be there. It shows up on mine with a
bad fan. But will it always? Who knows.

Did you try what I suggested? Put a box fan in front of the car
blowing air into it and start it up cold. If the AC works, then it's further proof that it's the fan. But if it doesn't, it might indicate that something
else is keeping it from starting initially. If it's the fan it's an odd
failure mode, where it won't start initially, but later runs OK. Did you
try exercising it with INPA after you've driven it and when it presumably
should be working?

Regarding FCP, I haven't ordered from them, but I've seen others
here who have and I have no reason to believe they aren't reputable.
I would have ordered, but the couple of times I was in the market,
it just turned out there were better deals, or some other vendor had
the other widget I needed too, etc. Actually, now that I think about it,
a poster here few weeks ago reported that he bought some cheaper
CV axles from them, had a problem with them, and FCP gave him full
credit for them towards better ones and even paid for part of the labor
cost. Never heard anyone do that. I also think they have a lifetime
warranty on all their parts? If so, that alone would be reason to get
the fan there.......
So I tried the box fan but that did not help. Also the box fan I have is a super quiet one which does have the airflow CFM like the shop fans.
I also tried the INPA after driving the car around and interestingly could not get the fan to activate. Even more interesting is as soon I unplugged iNPA I heard the fan turn on automatically for a few seconds. So I loaded up GT1 and tried to activate the electric fan. And once I pressed the activate button the fan activated and kept picking up speed and I thought it was going to blow up as I have never heard it run at that speed before. So now that leads me to believe that the fan is not bad after all. Back to the drawing board. Any other suggestions?
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  #26  
Old 07-27-2015, 08:58 AM
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Sounds like a bad controller board for the fan. Doesn't work all the time and when activated with GT1 it spins too fast.

Bad controller board equal new fan.
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  #27  
Old 08-01-2015, 12:24 PM
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I may be having some similar problems. AC nice and cold at first then it seems that the ductwork cuts off the output to the dash no matter what the settings. Even if I go to manual and fan is blowing hard (can hear the fan speed increase) very little output in the dash registers (or seemingly floor or window either). Anybody had similar symptoms. This is the model of controller with the "rest" button not "max" button. 2001


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  #28  
Old 08-01-2015, 02:06 PM
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That actually does make sense. It slows down over the first 10 minutes or so and "comes right back to life" with a 10 minute rest stop with high ambient temp. I'll report back


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  #29  
Old 08-02-2015, 10:17 AM
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that's exactly what i told my wife to try yesterday and i will check the charge level today. I will report back.Any progress O.P.?
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  #30  
Old 08-02-2015, 05:47 PM
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Help with air conditioning

Put on the AC manifold and has numbers like 35/210. Meager output. The refill kit suggested 42-47 at 82F so I put in 40psi.






I was able to get vent temp below 60 and more importantly air kept flowing.

We drove about 40 minutes directly into the sun and AC was having a hard time keeping up but was blowing cool air the whole time.

I brought my manifold kit with. Now the ambient was 90+ (dash outside temp 100-101F) and refill gauge ambient offset suggested 45#.

I added enough to get just about 45# low and was able to get vent temps in the low 50s.

On the way home driving with back to the sun and on auto but recirculating air was able to measure cabin temp of 73F by stick shift (out of air stream) with control set at 72/70 (always warmer on passenger side).

Vent temp with ambient of 88F was below 40F in center and 44F on the right window vent.




Now I just have to do mine.


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