For more information on converting to 134a, please visit our GM OEM Parts page and click on the “CONVERTING TO 134a” link in the middle of the page. Since operating pressures will undoubtedly be different yet again, however, this will not likely solve the problem for VIR equipped cars. As was the case when 134a was introduced back in the mid-90’s, it will likely take some time before we know what the proper procedures will be in order to convert to 1234yf. ![]() There is a newer refrigerant (1234yf) on the horizon, but how it will function with these classic car & truck systems remains to be seen. Classic Auto Air offers a VIR-eliminator/upgrade kit (part #15-211, currently priced at $94.99 plus s/h. If that’s not important, then converting your VIR to an accumulator, which was started on the Firebird in 1977, would be the best move. The wood grain is mint, there is one small crack on top of the dash pad. If you’re trying to keep the original appearance of the system in place, the only real option in this case would be to use the older R12 refrigerant. The horn ring, air conditioning vents, its all beautiful. As a result, a VIR-equipped system will not function very well with 134a refrigerant even under ideal circumstances, and if all other steps to converting to 134a are taken correctly. While most POA valves can be calibrated to function correctly with 134a refrigerant, the POA valve within the VIR cannot. Whether you are looking for FAQs, repair service, or replacement POA valves for GM or Ford vehicles, you can count on Classic Auto Air! Unfortunately, Delco valves cannot be rebuilt. If you have a Frigidaire POA valve, you are in luck…it can be rebuilt. Get the best deals on Air Conditioning & Heating for 1963 Ford Thunderbird when you shop the largest online selection at. While Ford used one of nine different Delco-manufactured POA Valves. The same goes for if your evaporator is freezing, chances are good you have a failing POA Valve.ĭepending on the model, General Motors cars & trucks used POA Valves made by Frigidaire or Delco. Get the best deals on Genuine OEM HVAC Controls & Control Units for Ford Thunderbird when you shop the largest online selection at. If you have little or no cold air coming out the vents when the A/C system is operating and the high side reading is normal but the low side reading is high, you may have a failing part. The valve prevents the Evaporator from freezing by bypassing excessive system pressure. On older cars with a POA Valve type system, the Compressor runs continuously whenever the air conditioning system is operating. However, in most mid-’60s to mid 70’s GM vehicles and some 70’s Ford vehicles, it’s a POA (Pilot Operated Absolute) Valve. In some systems, this mechanism is a thermostat. MotoRad has been engineering engine and thermal management solutions since 1958.All air conditioning systems have something built into the system to prevent your car’s evaporator from getting so cold that it freezes.
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