96_12V

I originally placed a similar thread in error on the drivetrain section. I checked and tried to re-charge my A/C system and found a high pressure, apx 120 or so when the valve was installed. The compressor sounded like it was not kicking on, so I took it to the place I have had other "signifigant" work done.

In fact the compresson is bad, so they replaced that and evacuated the system. Then they re-filled, checked for leaks and tried out the new compressor. Turns out, thier gauge aparatus went to over 500 psi when the new compressor turned on!! Whatever this problem is, it's what took out the old compressor. Anyone else have this problem whith thiers? I'll let you know the results.

I also post this to warn us - these sytems and the "do-it-yourself" containers may be a dangerous combination. Had I reached 500 psi when I installed the container on the truck, it would have exploded in my hand. Wear safety equipment when working with these devices, and if in doubt, have a professional test the system. Be safe out there!

I PASS GAS

Could it be that the orifice tube is clogged, causing the super-high pressures?

96_12V

I Pass Gas, I think you are right. The shop called me and the condensor tube orifices are considerably clogged. It will work marginally now, but not well and it will eventually take out the conpressor again. So a new condensor (and about $1500, all said and done) later and I'll be back on the road....

12vordie

Are you sure you took it to a good shop? Anyone that works on A/C systems know that you do not change the compressor without changing the condensor and orfice tube. When the compressor starts to go out small particales of metal from the compressor get trapped in the condensor and orfice tubes. They should have changed them all at the same time. If they ran the new compressor with the old condensor and orfice tube it would be wise to get them to replace then new compressor with another new one for a precautionary purpose.

I PASS GAS

Not sure how it is on your year, but on mine, the orfice tube is crimped in the liqid line. Look on the passenger's fender and take off the insulation. If you see two small crimps and while running it's hot on one side and cold on the other, you have found it. The cheapest place I could find was the dealer. The liqid line was $74.

If I were you, I'd go to AutoZone and get the $10 tool to release the fittings, and change all that stuff yourself. Then go to the A/C guy and have it charged. Should cost you a lot less that way. It's all very easy to do.

96_12V

Yep - you were right! Turns out with the new condensor installed, the new compressor that was run with the old condensor still in place failed! Fortunetly it failed while they were still testing the system, it hasn't even left the shop yet. So Monday a new compressor comes, and we'll try it again! I feel bad for the tech's working on it - thier A/C testor had just failed before I brought my truck in, the replacment managed to go south on them while they were working on my truck! It's been a tough week for them, I hope next week goes better!