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A/C Compressor High Pressure Cutout Switch


 

Question:

I had a water pump and hoses replaced on a 1995 Chevy G30 van, the morning
after I got it back I noticed a small 2″ spot of a yellowish-green oily
fluid on the driveway. Thought it might be some residual antifreeze driping
off the engine. By the next day I noticed my A/C seemed to not be getting as
cold as usual and 2 days later it started cycling of and on, by the next day
it would not cycle the the A/C on at all and was not cooling at all. I took
back to the service department and the said they found refrigerant leaking
from the A/C Compressor High Pressure Cutout Switch and replaced it. When I
was talking to the tech doing the repairs and explained that I just had the
water pump and hoses replaced and questioned if the switch could have been
damaged then he seemed to think that it could have happened. When I went to
get the car and told the service manager my story he stated that there was
no possible way that they could have caused the leak in the switch. He said
it was just a coincidence that the leak started when it did. I was just
wondering what your opinion was. If you have ever heard of a A/C Compressor
High Pressure Cutout Switch just start leaking on its own before. Thank you
for your time any comments.
Answer:

Rick,

The tech was probably being honest with you, the service manager was trying to keep his commission on the switch replacement !  Yes, the switch was most likely damaged when the pump and hoses were replaced.  Most likely the AC compressor would have to be removed to change the water pump so there is the chance of damaging the sensor.  Even if the compressor did not have to be removed, there is a change a wrench or other tool stuck the switch and damaged it.

Kevin

P.S.  P.S.  If you want to learn more about your A/C System, check out www.autoACsystems.com

Before you click out! While I know a lot about cars, I don't know a lot about YOUR CAR! A repair manual is essential and I have a way for you to get one FREE.

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Posted: 19th August 2006  |  Author: Kevin Schappell  |  Category: Heat & AC

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