flattopwill
Newbie
Hey guys I got an old r-4 pancake compressor mounted on my 5.3 and I'm trying to get everything working after not having it for a few years.
I replaced the condenser, drier, orifice tube, and high side line. I got the compressor from a salvage yard. It appears to be a reman from CompressorWorks in Dallas TX. We converted the system to R134A.
Before the first charge, my friend who is an ac tech pulled a vacuum for 30 mins. Then, charged to 2.5lbs. Equalizes to about 85-90psi when off. Low side is around 50psi and the high side is about 350-450psi when running. My tech buddy said the high side is climbing too high too quickly.
I have two Hayden 14" electric fans on the radiator that keep the engine plenty cool. I've only been running the AC when the truck is moving +30mph. The high side still over pressurizes and pops the safety valve.
Is there something wrong in my system or is there just not enough cooling on the condenser? I can't believe +30mph headwind won't keep the condenser cool when people sit with their car idling and the ac on for long periods of time.
IT'S HOT! PLEASE HELP!
I replaced the condenser, drier, orifice tube, and high side line. I got the compressor from a salvage yard. It appears to be a reman from CompressorWorks in Dallas TX. We converted the system to R134A.
Before the first charge, my friend who is an ac tech pulled a vacuum for 30 mins. Then, charged to 2.5lbs. Equalizes to about 85-90psi when off. Low side is around 50psi and the high side is about 350-450psi when running. My tech buddy said the high side is climbing too high too quickly.
I have two Hayden 14" electric fans on the radiator that keep the engine plenty cool. I've only been running the AC when the truck is moving +30mph. The high side still over pressurizes and pops the safety valve.
Is there something wrong in my system or is there just not enough cooling on the condenser? I can't believe +30mph headwind won't keep the condenser cool when people sit with their car idling and the ac on for long periods of time.
IT'S HOT! PLEASE HELP!