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Re: A/C Expansion Valve Failure? Posted by Gene N [Email] ![]() ![]() ![]() In Reply to: Re: A/C Expansion Valve Failure?, Robert Kaplan, Mon, 5 Aug 2002 14:00:28 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I got my expansion valve from eeuroparts, but I think that they are all made by Parker, you just get to choose where you buy it from. The 240 Psi was from memory and I might have gotten confused with my wife's car that has a R-134a system. I do remember that the 28 Psi was on the low side and that was at idle. Checking the temperature charts, 220 Psi of R-12 is equivalent to 245 Psi of R-134a.
I have a spare receiver dryer (new) that I'll put on, I'll flush the evaporator and just try again with a new expansion valve.
The new condenser I put on (from eeuroparts) uses a single channel for each fin that has a nice wide cross section rather than the multiple copper tubes of the original condenser. I believe that this is a newer design used with the R-134a systems that distributes the heat evenly over the whole condenser. The older style was a serpentine affair that tended to concentrate the heat at the top and not be as efficient. I think it is unlikely that a condenser of this design would be clogged in so short amount of time.
The annoying thing is that right up until it stopped, the system was really performing well in some brutal (100 degree) weather.
posted by 140.188.64...
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