85lebaront2 Posted August 9, 2022 Share Posted August 9, 2022 According to my research (looking at the same part for each year on rockauto and seeing when the style changed), ford trucks with a small-block did not get the refrigerant line with the pressure switch port until 1994. 1994 was when Ford went to R134. That is why I used 1994 up condenser and evaporator on Darth making his system a dedicated R134 system. FWIW, Chrysler changed in 1993 at least on the minivans. On my Chrysler I found that the updates were introduced starting in 1992 with different condensers and evaporators with compressors being phased in. Link to comment Share on other sites More sharing options...
Gary Lewis Posted August 11, 2022 Share Posted August 11, 2022 1994 was when Ford went to R134. That is why I used 1994 up condenser and evaporator on Darth making his system a dedicated R134 system. FWIW, Chrysler changed in 1993 at least on the minivans. On my Chrysler I found that the updates were introduced starting in 1992 with different condensers and evaporators with compressors being phased in. I added over 100 pages of HVAC documentation, as explained in the thread called, oddly enough, Documents Added To HVAC Section. Maybe some of it will help. Link to comment Share on other sites More sharing options...
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