Quote:
Originally Posted by Gilly
Hoses are different also, what they refer to as "barrier hose" on the 134a cars.....the 134a in R12 cars are known for not cooling as well at city speeds.
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Right, which is why I'm trying to figure out why factory equipped r134 systems cool better than R12 systems converted to r134.
The vent temps for my 91 TE (converted to r134 by PO with new compressor) are so much warmer than the vent temps for my 93 CE (r134) and the 95 E300 (r134).
Online parts stores sell the same condenser, compressor, evaporator, and expansion valve for 1991 (R12), 1993 (r134), and 1995 (r134). I already know all three years have the same aux fan.
Just now checked the EPC, which shows the same condenser, compressor, and evaporator for those R12 and r134 years. However, EPC shows expansion valve 140 830 06 84 for R12, but 140 830 04 84 for r134.
So, it seems to properly convert a factory R12 system to r134, one needs to use the newer style barrier pressure hoses, and be sure to have the r134 type expansion valve, along with green O rings and r134 size schrader valves.
And yes, of course, the bloody TE should never have been converted in the first place
