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A/C compressor question
- Thread starter rowdyrabbit
- Start date
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- Thread starter
- #23
I started looking to find a part number earlier then stopped. Thanks for the part number.
I had a dump truck a couple of years ago that kept overheating due to a missing fan shroud. I rigged one together from some old parts and never had a problem again.
Yep, seen this when a car has moved from Northern Spain to the South, TBH it would have to had been right on the brink of overfilling, change of location since refill?
Regards
Dave
- Thread starter
- #25
I believe the previous owner said he refilled it shortly before I bought it. It had leaked down at some point, and he refilled with a home kit of some sorts. Apparently the leak is not too terribly bad.
Or there never was a leak, and he just overfilled it...
- Thread starter
- #27
Also quite possible
- Thread starter
- #29
Yes. Those. I’m going to drive it a little over the next few days and see how it feels. I’m betting it’s a little low now. If it feels like it is, I’ll pick up a set of gauges to check.
The pressures are extremely dependent on temperatures. Don't expect to get those readings unless you are at the same ambient temp they were taken at. The best way to fill the system is to start at empty (vacuum with R134a) and add the correct amount by volume. Otherwise, there are charts on the interwebs that give approximate pressures at given temps. Alternatively you can use a good instant thermometer and watch the vent temps on fresh and max fan, slowly add refrigerant until they rise, and then back off a bit, but do not exceed the max pressure on the high side for your ambient temp.
FWIW I added 3 cans this past wknd after replacing Manifold O-Ring (lubed with Mineral oil) and it blows nice and cold as long as there is air moving over condenser.
It actually blows so cold I had to turn it down because I was pointing thru my shirt.
I’m having the same problem but mine is intermittent was wondering if yours is a constant problem? I’m thinking mines just a belt waiting to get home in a couple days to start looking into it
- Thread starter
- #33
In the past I’ve used the cans with the built in gauge from the parts store. They have a dial that you turn to the current outside temperature. I don’t completely trust them, but I’ve never had a problem with them. I’ve only used them on vehicles that I figured I would have to swap parts on anyway. Basically, a last ditch effort. But, they’ve done the trick the times I’ve used them.
- Thread starter
- #34
Mine worked fine for a while. Like someone else said, so cold I would have to turn it down or off. Then one day the belt started squealing while I was driving. It would run fine for a while at startup, then would start making racket a little later. Really hot days made it squeal quicker. I tightened the belt. Sprayed belt dressing on it. Replaced it. Finally figured the compressor must be going out, so I quit driving it on days when I would need the air. Basically, May through October down here. Finally decided last week I was going to mess with it and see what I could figure out.
Long story short, rarely squealed at startup. Would squeal a while after it warmed up, usually when I got into the gas like pulling out onto the highway. Once it started squealing, it would usually do it until it cooled back down. I would turn it off, of course, to stop the squealing. But, it would squeal again if I tried it before it cooled off. Let some pressure off, and now it doesn’t squeal. Hopefully that helps.