Quote:
Originally Posted by tomj76
If it's dye then it will wipe off. Clean it off, see if it comes back.
I think an A/C leak that is big enough to be heard is going to empty the system quickly. You might be hearing the flow of liquid through the expansion valve. I've read this is normal in some A/C systems.
I really don't know but I wonder if low charge in the system could lead to hearing this sound as the expansion valve attempts to compensate for the reduced available super-heat. I think the front a/c evaporator loses cooling more rapidly than the rear one when the charge is low.
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tomj76 - good idea about cleaning it off. I will do that saturday or sunday, run the system, and see if it comes back. Regarding your thought about the low charge....interesting. Charging the system is next on the to-do list if I can figure out the rear auxiliary blower motor issue (different thread).
I have heard you can charge the a/c system with propane to check for leaks, propane is cheaper than refrigerant, but haven't tried it. Thoughts out there about doing this? Any concerns about discharging the propane?