Intermittent A/C = a Merry Chase - Saab 9000 Bulletin Board - Saabnet.com
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Intermittent A/C = a Merry Chase
Posted by George (more from George) on Sat, 28 Feb 2004 20:39:26
In Reply to: Pics of the new wheels!, Mike C, Sat, 28 Feb 2004 18:00:10
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The A/C on one of my 9000s has gone intermittant. I'll eventually track this down, but I'd like to poll others to see what problems they have had.
Here's what I've ruled out;
The climate control module - swapped with another known good module.
Any sensors - The correct 'on' signal appears on pin 38 of the climate control.
The A/C relay - swapped with another known good relay.
The anti-icing thermostat - closed when the compressor won't run.
The system is charged full and the pressures are correct. I have also ruled out an obstruction or bad expansion valve. The car can sit overnight and the compressor won't run, or even spin once when the A/C is turned on.
Still a few things left in the circuit;
The over/under pressure switch on the receiver.
The delay timer circuit in the EDU.
The Trionic ECU.
All the wiring in between.
Thanks
posted by 67.125.7...
Posts in this Thread:
- Pics of the new wheels!, Mike C, Sat, 28 Feb 2004 18:00:10
- I'll trade you for my super aeros, matt 94 aero, Sun, 29 Feb 2004 14:13:37
- Nice lookin' ride!!!!!! (n/m), Joe98, Sun, 29 Feb 2004 12:19:52
- fantastic, K-man, Sun, 29 Feb 2004 09:04:00
- looks great!, jan geert, Sun, 29 Feb 2004 00:33:49
- Intermittent A/C = a Merry Chase, George, Sat, 28 Feb 2004 20:39:26 <-- Viewing This Message
- awesome, gavin, Sat, 28 Feb 2004 18:14:29
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