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AC help - 2001 Grand Prix

trenaro on Sun May 17, 2009 12:34 PM User is offlineView users profile

Hello – wondering if you might be of some help

Time to fix the AC. Bought the car 3 months ago. About a month ago I tried to recharge the system (totally out), and it leaked out in about a week. Took it to a shop for testing and was told it was the condenser. Replaced that and tried a recharge again.

All of the sudden the compressor started to spew greenish oil out. I know these things could leak, but that much? The color I added to the condenser was blue. Anyway I let it cool for a couple of hours and pulled the tire off so I could get a good view of what was going on, but the compressor will no longer kick on now. It still has Freon in it to kick the compressor on.

One other thing is when a condenser is changed you need to add 1 oz of oil to it. There is no way to do that unless there is some equipment mechanics use. I was able to add maybe a quarter oz, I then put a small amount in the condenser hose by removing the hose on the back of the compressor.

I'm thinking this might have overloaded the compressor with too much oil. I'm wondering if this could have fried the compressor???????

Any help with this would be greatly appreciated.

2001 Grand Prix

GM Tech on Sun May 17, 2009 12:53 PM User is offline

You are either have a poor connection on the back of the compressor, like a missing sealing washer, or you have a severe restriction in the condenser, that is not sensed by the HPCO transducer- and the compressor's relief valve is blowing-- hard to tell from here..

Did your vacuum you pulled hold for an extended period? like 30 minutes or more? this would rule out the dropped sealing washer-was the hose unhookednear the compressor?

If not, then was the condenser installed properly? Fans running?

The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

trenaro on Sun May 17, 2009 1:01 PM User is offlineView users profile

Yes the hose was unhooked near the compressor. Compressor always worked until it started spewing. Condenser is installed correctly, did not hold for thirty minutes (I didnt run it that long). This dropped sealing washer - is that on the 2 hoses to the compressor? Fans are OK. Do you think this could have fried the compressor?

Thanks for you help


Chick on Sun May 17, 2009 9:51 PM User is offlineView users profile

The two sealing washers on the rear of the compressor are "one time use only", change them and use new ones...Make sure there isn't one stuck on either the compressor or the manifold before installing new ones..Hope this helps..

Email: Chick


Freedoms just another word for nothing left to lose

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