Automotive Air Conditioning Information Forum (Archives)

spongebob on Thu June 09, 2011 8:12 PM

my trying to help a friend with a r-12 system...he had a schrader valve leak, replace and recharged a 3lb 4 oz system with 3 lbs of r401a to see if the sysem would work..

compressor would kick on at 40 psi and go off at 20..head seemed high 250+.
low side seem to drop pretty quick 5-8 seconds!!

i added more freon and the compressor would run longer but head went sky high....

think i have a plugged orifice but though i double check with you guys!

we went for a ride to get some wind over the coil and the valves on the back side of the c0mpressor popped I know this was an overcharge!! but no cold air before this happend!!

JJM on Sat June 11, 2011 2:14 PM

How are the fans? Condenser clean? Any cold spots (frosting) on the high side.

Have you hosed down the condensor to see if pressures drop?

Joe

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spongebob on Sat June 11, 2011 3:34 PM

fan is running coil looks clean.