2008 bought used. Has ~140K miles. The AC compressor made the dreaded squeal again last night. This will be the 3rd compressor in 4 years. Why does this keep happening? Any ideas? Taking this to a trusted mechanic that we have known for years, have followed from one shop to his new shop. Something is being missed. Also, seems to happen after the expy has been sitting for a while with the AC running. Last night we were sitting about 20-30 minutes. Thank you.
2008 Ford Expedition XLT - 3rd AC compressor in 4 years
- Thread starter Jmcows
- Start date
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07navi
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Was it ever flushed and re-charged?
07navi
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Were they all the same brand?
07navi
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It sounds like something in the system was causing it or maybe too much refrigerant every time. Maybe a clog also, the compressor has to receive and expel refrigerant in a gas form so maybe they were choking (slugging) on solid liquid or maybe there was never any pag oil in the system. The compressor needs the right percentage of oil to function so maybe none was ever added. The refrigerant turns to liquid in the condenser after the compressor and back into a gas after it passes the expansion valve or orifice tube depending on which one you have.
JasonH
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When a compressor has an internal failure, it can send debris into the system. Usually the dryer and condenser are replaced along with the compressor if this happens. If only the compressor has been replaced this may be the source of the repeated failures.
07navi
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Did they replace the accumulator / dryer?
Shantheman73
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My wife's 2009 Ford Flex has gone thru 4 compressors now. I finally got a decent explanation from a friend that's a Porsche mechanic...of all things.
He put an OEM in for me the last two times...and he said that apparently if moisture gets in the system...it's difficult to get all of the moisture out. Once it's in there...it's common to have multiple failures he said.
So...the last one he put in, he flushed it twice and so far it seems to be doing the trick. Knock on wood.
Not sure if this helps...but this has been my experience with multiple compressors that have failed.
