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A/C 'coughs' while cruising 900 1993

posted by  eawea on  Fri Oct 18 08:16 CST 2002
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It appears that my A/C is doing something it shouldn't and it sounds like a cough for the inside the car. It occurs at regular intervals. It appears to be most notable at 2500RPM and up. My best guess is the pump is seizing and it is the belt slippage that I hear. This has been going on for several hundred miles and approximately 4 months, with no loss to the effectiveness or cooling abilities of my A/C.

Any Ideas?

93 940T 13.5 lbs of boost







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A/C 'coughs' while cruising 900 1993

posted by  someone claiming to be jpezie on  Tue Oct 22 00:11 CST 2002 [RELATED]

Sounds familiar.
I had the same this summer.
Your A/C needs service.The pressure is at a minimum, so you need a refill of R13. You cannot simply add fluid; everything has to be drained , then a check will be done on leakage with some friendly gas. When there is no leakage, the system will be refilled with the proper amount of R13.
Both overpressure and underpressure should be within limits.
Best advice: find a good A/C servicestation

best regards,
John








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A/C 'coughs' while cruising 900 1993

posted by  eawea on  Wed Oct 23 03:07 CST 2002
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Thank you for the advice I will try that, it makes sense. -Eric







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