expansion valve testing?
one of my cars 92 Lexus SC400 A/C will not cool. Pump is good I believe as I can see pressure change from high to low when the compressor kicks in. I have 50 psi of R134 in the system when the compressor is running and about 130 psi when its not running from the low side port. I have very slight cooling from the vents but no where close to what it used to produce. Could my expansion valve be blocked by moisture or just go bad? Dryer has not been serviced since forever to my 4 years of ownership knowledge. Dads car from Texas, not sure what he did with it but he was a car guy so he loved this car and treated it well. It looks to be an older generation type valve: I dont even know where this would live in this car as everything is very densely packed in this model. Do these go bad?
one of my cars 92 Lexus SC400 A/C will not cool. Pump is good I believe as I can see pressure change from high to low when the compressor kicks in. I have 50 psi of R134 in the system when the compressor is running and about 130 psi when its not running from the low side port. I have very slight cooling from the vents but no where close to what it used to produce. Could my expansion valve be blocked by moisture or just go bad? Dryer has not been serviced since forever to my 4 years of ownership knowledge. Dads car from Texas, not sure what he did with it but he was a car guy so he loved this car and treated it well. It looks to be an older generation type valve: I dont even know where this would live in this car as everything is very densely packed in this model. Do these go bad?
