I have a 2001 Pontiac Bonneville SSEI and have replaced my A/C compressor 4 times since July 2005, because of bad seals . It just blew again and I do not have warranty this time, so I am gonna replace it myself. Every single time it is the same problem. The seal blows and all the freon leaks out.

My questions is this: What could cause the seal to keep blowing, so I do not have to keep fixing this? Or is it just crappy compressors? Help would be much appreciated.

Thanks

Holy cow! That'* incredible...almost seems like there'* a problem that is causing the seals to blow.

Which seal is blowing, high pressure side?

Yes, I believe it is the high pressure side...I can not be certain...I would have to ask.

I am back at this...I have replaced the compressor myself, and again it lasted about 3 weeks before the seal blew again. Would anyone have any idea what is going on??? I believe I have either a sensor problem or faulty wiring. Does anyone have any idea what sensors and wiring control the A/C. I believe the compressor isn't disengaging when it should be, and this causes the seal to blow!

The seals are probably going bad because of a faulty machining process where the lines compress the seals against the compressor. You should have a very good AC tech (GM experience) take a close look at the surfaces for any irregularities before replacing the seal (*) once again. You may be better off going with a remanufactured compressor.

I have always replaced the compressors w/ remanned ones. They have came from either NAPA or Advance. Both places receive them from the same manufacturer. Could it be that the remanned ones are crap compared to the GM compressors? I have went through at least 5 or 6 remanned compressors!!! I still think it may be something electrical...

where is this high pressure switch located??? Is that the sensor on the compressor itself???

Try replacing the metering orface tube on the inlet side of the evaporator coil . also check to see if the condenser coil is clean and free. Alot of times there will be a build up and bugs and other dirt between the radiator and condenser coil . Either one of these things can increase head preasure and potentialy cause seal failure