Refrigerant Type: R12-134a
Well, I just got another Taurus in with front-end damage. Must be a run on Fords. Owner said the A/C wasn't working before the "crash" so I did a quick check. Yep, compressor sounds like a thrashing machine. The A/C looks like it was converted to 134a about four years ago. The Blue label said Pep-Boys installed 36ozs. of 134a and 5ozs of Ester. I peeled up the sticker and under it was the factory label. It said 2lbs. 4ozs of R-12. Checking the NAPA reference, it says 41ozs of R-12 so I guess PB must have used that for the basis of 36ozs. of 134a, but who knows. It's PB. The valves in the compressor must be shot because I couldn't get an HS reading over the LS at ambient so it was most likely overcharged and blew the valves or pistons.
Anyone know if there was a change to the system that would necessitate the 41ozs indicated by NAPA?
Custom Car Works
"Rules are for the guidance of wise men and the obedience of fools."
Ford issued a manual update TSB in 1992 (!) revising the R12 capacity from 40+/-1 oz to 32 +/-1 oz. This applied to all variants of the 1992 Taurus/Sable.
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