Thread: '88 420SEL A/C R12 vs. R134
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Old 07-09-2003, 02:45 PM
joe p joe p is offline
it leaks, its german
  
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
First off make sure the duo valve is not leaking. Then install a 134 expansion valve and dryer, make sure the compressor is not weak and charge the system by output temp, not weight. Also make sure there are no leaking elements and the car has the dual aux fan set up.

Then make your desision on going back to 12. I think if you get the system right it'll cool great.



Joe
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