unexplained loss of a/c freon charge after 2 weeks

Asked by Jul 09, 2013 at 01:18 PM about the 2005 Mercury Grand Marquis GS

Question type: Maintenance & Repair

charge system add oil with dye  pressures good  nice and cold comes back 2 weeks later system empty no trace of dye anywhere has new evaporator compressor and reciever/dryer help???

4 Answers

you have a leak...use a product like SNOOP to apply to the entire breadth of the piping...at the joints to find your leaker~

1 people found this helpful.
28,305

Take a real good look at the front of compressor, the pulley and clutch with a bright light. A leaking compressor shaft seal can sling the oil and dye from the shaft seal without leaving much evidence.

2 people found this helpful.

...sadness if it is a shaft seal...

28,305

Shaft seals aren't too bad to replace if you have the tools and the time and the shaft and compressor are ok. Recover any R134a that's left, remove the compressor, remove the clutch and the pulley (field too if you feel the need), R&R the seal (use plenty of refrigerant oil or other suitable lubricant), evacuate and recharge the system Otherwise - yeah - not much fun to replace the compressor and orifice tube and flush the system (if the compressor goes to crap that is).

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