The good thing about a 190 is that the evaporator is easy to replace. I would have the expansion valve checked closely. If it is oily and dirty, I'd do it and go back with R-12. The converted cars with old compressors do not ever cool as well as the r-12's/

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
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