Hi everyone!
I am having some troubles with my air conditioning system on my ‘95. My knowledge about A/C is not very extensive (and it shows ) but I wanted to tackle this job myself since I’m 19 and have no money
Here’s what happened:
I replaced my A/C compressor because the old one was acting up. It wasn’t totally locked up, but often times the belt would slip when it kicked on. Compressor would turn on, belt would slip for a few seconds, then the compressor would finally free up. It was like this for a while, maybe 6 months, before I decided to do something about it. It cooled fine, but the squeal when the compressor started was annoying. BTW the A/C belt was new and tight.
I drained the refrigerant, pulled the old compressor and installed a Denso remanufactured unit that I ordered from Rock Auto. I installed the new o-rings on the lines going to the compressor, but I didn’t touch any of the other lines. Once I had it all sealed I pulled a vacuum and it held 30 in Hg overnight (I followed the A/C video by ChrisFix). I let the vacuum pump run for another half hour then I added refrigerant. I added about 2.5 of those 12oz bottles of refrigerant. With the compressor running and the correct amount of refrigerant in the system, the low side was at a vacuum around 20 in HG. I read that this means there is a blockage somewhere in the system.
I have a new expansion valve and drier too. Would it be stupid to blow compressed air through the lines when everything is disconnected?
As it sits right now, the lines at the evaporator and the drier are disconnected.
I read that replacing a bad A/C compressor without flushing the system can cause lots of problems (after I was all done of course) and that there might be debris in the lines. The other thing I was unsure about was the oil in the compressor. It came with oil in it already, but I’m unsure if it was the correct amount.
Any help would be greatly appreciated, I really wanna get this thing working again.
I am having some troubles with my air conditioning system on my ‘95. My knowledge about A/C is not very extensive (and it shows ) but I wanted to tackle this job myself since I’m 19 and have no money
Here’s what happened:
I replaced my A/C compressor because the old one was acting up. It wasn’t totally locked up, but often times the belt would slip when it kicked on. Compressor would turn on, belt would slip for a few seconds, then the compressor would finally free up. It was like this for a while, maybe 6 months, before I decided to do something about it. It cooled fine, but the squeal when the compressor started was annoying. BTW the A/C belt was new and tight.
I drained the refrigerant, pulled the old compressor and installed a Denso remanufactured unit that I ordered from Rock Auto. I installed the new o-rings on the lines going to the compressor, but I didn’t touch any of the other lines. Once I had it all sealed I pulled a vacuum and it held 30 in Hg overnight (I followed the A/C video by ChrisFix). I let the vacuum pump run for another half hour then I added refrigerant. I added about 2.5 of those 12oz bottles of refrigerant. With the compressor running and the correct amount of refrigerant in the system, the low side was at a vacuum around 20 in HG. I read that this means there is a blockage somewhere in the system.
I have a new expansion valve and drier too. Would it be stupid to blow compressed air through the lines when everything is disconnected?
As it sits right now, the lines at the evaporator and the drier are disconnected.
I read that replacing a bad A/C compressor without flushing the system can cause lots of problems (after I was all done of course) and that there might be debris in the lines. The other thing I was unsure about was the oil in the compressor. It came with oil in it already, but I’m unsure if it was the correct amount.
Any help would be greatly appreciated, I really wanna get this thing working again.