I have a question about AC compressors. I know that when they go "Bad" they can leak... Clutch can freeze up or break... But can they just stop pumping??? My AC compresor cycles normally... But it doesn't pull any pressure. I had to replace a blown line on the back of it, and it won't take a recharge Everything worked fine up untill the line blew. Any help out there TIA
After replacing the line, did you pull a vacuum and check for leaks? You must use a vacuum pump for 15-20 mins to evacuate the system and remove all moisture.
I pressurized the system and it didn't leak. The can I put in there 2 days ago is still there. (the pressure hasn't dropped)... But I didn't know about having to pull a Vac. to get the Moisture out. How bad will that mess up the systemou:
Moisture reduces the cooling efficiency of the refrigerant, can form an ice block, can cause corrosion. Also sounds like you didn't check the oil. If you had a line "blow", it carried some of the oil out with it. Did you drain the old oil out of the compressor and measure the quantity, and then add oil back into the system according to the chart in the Chassis Service Manual? The charge for your car is 5 of the 12 oz cans of R-12. One can is four cans short. Unless you are using a 30 lb tank and a scale, then the charge is 3.75 lbs.
Once you open the system, you need to replace the drier and evacuate the system for 15-20 mins. Since you did not do a proper rebuild, you will need to start over. If you don't have an AC vacuum pump and gages, you can rent them. You need to read up on the AC system and pressure readings to do a proper system rebuild.
