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How do you repair the AC on 1999 Grand Prix GT?

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βˆ™ 2009-07-28 04:58:20

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Need to be more specific, blows hot, compressor is locked up etc... ......................

More specific would indeed help. However, the most common leakage points on this model GP are the compressor front seal and possibly a corroded or damaged condenser (the large radiator-like object in front of the radiator). Diagnosis of a leaking system can be made simple with some UV dye (available in R134a canisters), and a UV-light flashlight (available inexpensively at auto parts stores). You will see a bright yellow fog coming from any leakage points. Compressor replacement is fairly straight-forward (3 bolts on the front, and a single bolt holding the hose assembly to the rear of the compressor, one electrical connector for the clutch). Condenser replacement is a bit more complex (requiring un-bolting the radiator mounts, upper engine mounts, and moving the radiator out of the way to remove the condenser). In either case the filter-drier should be replaced if the system has been compromised for some time, also consider replacing the orifice tube which gets easily contaminated.

2009-07-28 04:58:20
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