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Re: Air Conditioner Advice Needed - Long Posted by CrNiFe [Email] ![]() ![]() ![]() In Reply to: Air Conditioner Advice Needed - Long, David B, Wed, 30 May 2007 09:38:48 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Well, I just had some AC clutch trouble, bearings were noisy, on my MY 99 9-5SW, about the 80000 miles. We could hear it, and decide to take pre-emptive action, before the clutch caused damage to the compressor.
I am not sure how the compressor can have a short circuit. It is a mechanical device, and it is either on (clutch engaged) or off (clutch disengaged, only in ECON position).
You can't have cold air on a hot day without the compressor working. If it doesn't become coupled with the clutch to the engine, it won't compress the coolant.
In your shoes, I would investigate the clutch operation - have someone push the ECON button while you listen to the right front lower area of the car, for noise, and for a slight change in engine RPM as the load engages.
If the compressor seizes, it will stall the engine and possibly cause damage.
The other possibility is the system no longer is charged because of low pressure side leak (if on the high pressure side, you would have heard it!).
So, to sum up, I can't see how the short circuit idea makes sense, especially if you have done the fault code checks and nothing has come up.
Regards to MA
CrNiFe
Toronto
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