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AC conversion question #1656143 08/07/14 04:31 PM 08/07/14 04:31 PM
Joined: Nov 2010 Posts: 582 PA B BTTG OP mopar
BTTG OP mopar B Joined: Nov 2010 Posts: 582 PA	I'm getting my AC reconnected on my 69 Coronet R/T. going to 134. the shop is telling me my system keeps freezing up... I had installed a new compressor before taking it in and had them reconnect the discharge and suction hoses to avoid leaks being my fault. what i didn't realize was that there was no EPR valve in the remanufactured compressor. As I had read about so many folks pulling their EPR's when converting i figured this would not be an issue (I already returned my core long ago and left the EPR valve in it). there replacing the expansion valve and retrying... do i need the EPR valve? where can i get one? or do i need the thermostatic cycling switch from Classic Air? Can i install this after having it charged? I'm likely running up quite a bill and may not be moving towards an operable system It is tough to find shops in these parts that still know these systems well. thanks

Re: AC conversion question [Re: BTTG] #1656144 08/07/14 07:26 PM 08/07/14 07:26 PM
Joined: Jan 2003 Posts: 25,747 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,747 Rio Linda, CA	When removing the EPR valve, the clutch cycling switch is a must. No need to open the system to install the cycling switch. The INTERNET, the MISinformation superhighway

Re: AC conversion question [Re: John_Kunkel] #1656145 08/08/14 12:17 AM 08/08/14 12:17 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: When removing the EPR valve, the clutch cycling switch is a must. No need to open the system to install the cycling switch. That is correct. It does what the Suction throttle valve on Fords and GM cars did. I would think some of these AC companies sell like a universal cycling switch. I remember some had a small hole into the AC suction line at the firewall that the cycle switch tube went into to sense the temp there after the evaporator and some had the tube go right into the evaporator. Others went into the suction side of the exspansion valve (H-valve some called it) thats really part of the suction side after it comes out of the evaporator. Maybe the aftermarket AC companies sell one that wraps around the suction line and gets covered and secured to the line. Ron

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