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Red powdery AC dust
Posted 09 August 2002 - 11:07 AM
Posted 09 August 2002 - 12:41 PM
I had the same problem, which started out as you describe. Eventually, every time I turned the AC on, there would be a awful screeching/screaming sound. I had by drive/accessory belts tightened about 4 weeks ago, and the sound hasnt come back (And dust is very minimal)
Posted 13 August 2002 - 07:22 AM
The compressor eats up a lot of torque. Methinks tightening or replacing belts would be the best first step. and btw-- the dealer belts I've encountered are much better in quality than the Pep-Boys house brand.
Posted 13 August 2002 - 07:42 AM
Posted 13 August 2002 - 12:18 PM
Posted 13 August 2002 - 02:49 PM
Posted 14 August 2002 - 02:37 PM
Posted 14 August 2002 - 05:46 PM
I guess it is rust (Fe2o3). As the clutch picks up it rubs minute particles of steel that within a few days show typical red rust.
If my compressor did this I could check my theroy by wiping the red dust with rust killer (phosphoric acid). This turns rust to iron phosphate which is black. However on the grey aluminium of the compressor it would appear to disappear.
However my car does not have this rust which makes me suspect there is something wrong with your clutch or compressor
Posted 15 August 2002 - 12:46 PM
Posted 16 August 2002 - 06:46 AM
For some time, I've had an intermittent problem with the compressor clicking on and off quickly (1-2 times/second). I could tell it was doing this while driving, but none of my passengers noticed (i.e., some drivers may not notice). If I had the hood up and was looking, it was obvious.
Someone reported a cold solder joint in their heat control buttons that caused theirs. I narrowed mine down to the relay connected to the (hi/low) pressure switches. It hasn't done this lately, so I've not looked further into the problem.
Posted 16 August 2002 - 08:14 PM
Posted 17 August 2002 - 04:14 AM
Posted 19 August 2002 - 02:52 PM
Posted 21 August 2002 - 05:20 AM
I have no idea what the red dust is...
Posted 23 August 2002 - 09:30 AM
It means that the pump needs a little servicecing (not a overhaul). There is oil in the pump and when that gets old the dust appears. This oil just need to be changed.
He said it was a simple and cheap job but it needs to be done by a specilized company (his neigbour).
He also said there is no real rush to take action, but do not ignore it over a long period.
Does this make sence to any of you?
Posted 26 August 2002 - 10:58 AM
97 Outback with 134a refrigerant.
Posted 28 August 2002 - 05:18 AM
Posted 29 August 2002 - 04:00 PM
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