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Who do you believe?

CCWKen on Tue July 15, 2008 2:19 PM User is offlineView users profile

Year: 92
Make: Ford
Model: Taurus
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?

Ken Kopsky

Custom Car Works
"Rules are for the guidance of wise men and the obedience of fools."

steve325is on Tue July 15, 2008 2:34 PM User is offline


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.

-- Steve

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