2004 9-5 Strange A/C behavior - diagnostic help please - Saab 9-5 Bulletin Board - Saabnet.com
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2004 9-5 Strange A/C behavior - diagnostic help please
Posted by three_jeeps [Email] (more from three_jeeps) on Sat, 9 Aug 2014 14:11:18
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2004 9-5 Linear
Issue: A/C vent in rear seat (back of center console) discharges cold air then hot, then cold, then hot - periodically,
e.g. one minute cold, then one minute hot, etc.
The details: 84 Degrees F outside, Temp setting on A/c is 68 degrees F, A/c in Auto, and sometimes a fixed fan speed is selected.
System starts out blowing cold on all ducts for a while till cabin cools down. Then the temp cycling of the rear duct begins, BUT,
it does not happen all the time. On occasions when the cycling occurs, the 'normal' a/c behavior has been a short as 15 mins, or as
long as perhaps 1.25 hrs, the the cycling will happen. Sometimes, the center duct on the dash or the passenger duct by the door will
also blow out hot air.
It has been happening over a year. Took it to local dealer - they said the A/C system is working fine.
I have also reset the control unit a few times. This behavior has me baffled....
A
posted by 96.235.32...
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