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I'm new to the forum, and I have gotten some great ideas by just reading some of the posts. But I have a 92' Explorer XLT 4.0 and I accidently let out the freon. I know your wondering how you accidently let out freon, well I was looking for a vacum hose and somehow the clamp the holds the hose coming into the accumulator came off, scared me half to death, anyway, I just bought the truck a couple of weeks ago, and the previous owner converted it, or had it converted, so I vaccumed out the system, added my ester oil, and filled it with freon, up to about 65 on the gauge. Still blowing hot air. This morning when I checked the pressure, it was up around 100 on the gauge and blowing cool air, not cold, but cool. My questions are:
1. Why did the pressure go up overnight
2. If I let out some of the freon, to the right pressure reading, will it fix my problem?
Okay, so now I have figured out why I was reading like 100psi on the low side port. I checked it with the truck off. Hooked my manifold gauges up to the high and low side, after a new vaccum and re-charge. with truck off, the low side climbs higher than the high side, with truck running after compressor clutch kicks on, high side moves to about 250-255psi and low side drops to about 40-45psi.
Still no COLD air, blows out cool air, but not when adding freon, air is hot when adding freon, cool when not. I dont have a temp. gauge to use in the truck so I dont know what the temp is coming out, but it aint cold I do know what. Is my compressor junk, or could my expansion valve be clogged???
This will help a lot, I found some instructions on another site that did not have pics, and I will admit, I was a bit clueless, but this should help tremendously, thank you very much, I will let you know what I find. Thanks again.
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