Re: Can you bench test an A/C EPR valve?
[Re: 69Chrgr]
#2612236
01/25/19 07:57 PM
01/25/19 07:57 PM
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Joined: Jan 2003
Posts: 26,470 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,470
Rio Linda, CA
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The FSM doesn't show a bench test, the only to test it is in operation with a special 3-gauge manifold that monitors the pressure drop across the evaporator.
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Re: Can you bench test an A/C EPR valve?
[Re: Ronnman]
#2613795
01/29/19 12:34 AM
01/29/19 12:34 AM
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Joined: Aug 2005
Posts: 302 Hinckley, Ohio
KWF340
enthusiast
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enthusiast
Joined: Aug 2005
Posts: 302
Hinckley, Ohio
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I went through this exercise about a year ago and I could not find any way to test the EPR valve outside the system. As stated above, the valve can be tested when in the system based on pressure readings, but that means the system has to be charged. The last thing you want to find out when restoring the AC system is that the EPR valve is bad AFTER the system has been charged. Also, based on what I’ve been told Mopar EPR valves have a shelf-life when not in a working system (even unused “never been out of the box” NOS valves will go bad over a period of time). Since the original Mopar valves haven’t been made in years, there is a good chance that many/most of the NOS valves out there are bad. So if the valve is in an unknown condition, then I would just buy a repro valve as cheap insurance. Repro EPR valve
Last edited by KWF340; 01/29/19 12:35 AM.
1968 Charger R/T, 440, Auto, GG1; 1969 Super Bee, 383, 4-speed, T5; 1969.5 Road Runner, 440-6, 4-speed, 96; 1970 Duster 340, 4-speed, EV2; 1970 Charger R/T SE, 440 (496), Auto, EB3; 1970 Dart Swinger 340 (416), 4-speed, EV2; 1966 Corvette convertible, L79, 4-speed, Red 1970 Corvette coupe, LS5, 4-speed, Daytona yellow; 2000 Corvette coupe, LS1, 6-speed, Twin Turbo, Torch red.
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Re: Can you bench test an A/C EPR valve?
[Re: KWF340]
#2613802
01/29/19 12:46 AM
01/29/19 12:46 AM
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Joined: Aug 2005
Posts: 302 Hinckley, Ohio
KWF340
enthusiast
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enthusiast
Joined: Aug 2005
Posts: 302
Hinckley, Ohio
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Some additional information here. EPR
Last edited by KWF340; 01/29/19 12:48 AM.
1968 Charger R/T, 440, Auto, GG1; 1969 Super Bee, 383, 4-speed, T5; 1969.5 Road Runner, 440-6, 4-speed, 96; 1970 Duster 340, 4-speed, EV2; 1970 Charger R/T SE, 440 (496), Auto, EB3; 1970 Dart Swinger 340 (416), 4-speed, EV2; 1966 Corvette convertible, L79, 4-speed, Red 1970 Corvette coupe, LS5, 4-speed, Daytona yellow; 2000 Corvette coupe, LS1, 6-speed, Twin Turbo, Torch red.
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