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A/C not blowing cold air

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mrtm1970

mrtm1970

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Well I have an appointment for 7:30am to get the A/C recovered and refilled…estimate is $400 max
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Stan B

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I thought you said it was blowing cold sometimes. That may indicate a failing compressor, but not a failed one. Also, why a condenser? Did they complete the recharge or just give you their diagnosis and bail on the rest?
 

CharlesHS

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Well said Compressor is shot and locked up.

Quoted me $2780 to replace compressor and Condenser
How did the technician determine the compressor had gone bad when in your previous posts you indicated the system was cooling after a period of operation ?
As Stan B asked; why is the condensor being replaced ?
Is it damaged, obstructed or is the expansion orifice incorporated into the condensor ?
What type of warranty are they offering for that work ?
 

AlgUSF

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I had a similar thing, intermittent cold air on my honda civic where the compressor would kick on intermittently, I removed the shim between the clutch and the pulley and it worked fine for another 100K miles.

Locked up compressor sounds a bit unlikely because wouldn't the clutch kick in and the belt would squeal. Have you pulled the serpentine belt and tried to spin the compressor by hand, not the pulley but the compressor shaft?
 

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mwilk012

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I thought you said it was blowing cold sometimes. That may indicate a failing compressor, but not a failed one. Also, why a condenser? Did they complete the recharge or just give you their diagnosis and bail on the rest?
Receiver drier is located on the condenser and is a requirement of the warranty from the supplier of the compressor 99% of the time. This is 100% standard.
 

mwilk012

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How did the technician determine the compressor had gone bad when in your previous posts you indicated the system was cooling after a period of operation ?
As Stan B asked; why is the condensor being replaced ?
Is it damaged, obstructed or is the expansion orifice incorporated into the condensor ?
What type of warranty are they offering for that work ?
Very likely the OP is simply wrong that it was ever cold at all.
 

AlgUSF

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Receiver drier is located on the condenser and is a requirement of the warranty from the supplier of the compressor 99% of the time. This is 100% standard.
Yep, always replace the receiver drier when replacing a compressor, bummer that it is integral to the condenser. But then if there is a catastrophic compressor failure it is always best to do both the receiver drier and condenser.
 

CharlesHS

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Yep, always replace the receiver drier when replacing a compressor, bummer that it is integral to the condenser. But then if there is a catastrophic compressor failure it is always best to do both the receiver drier and condenser.
Catastrophic compressor failures can send particles/chunks throughout the system.
Additional system parts will require replacement including a thorough flush of the system.
 

roaniecowpony

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Call me skeptical. Compressor failures are ... well, lets just say I'd want to see the "black death" evidence when the system is opened.
 

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DaltonGang

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Someone is being taken for a ride, it sounds. Cheaper to dump a can of freon in, to test it, than take the word of a mechanic . This is why I learn to fix as many things as possible on my own rather than take it to someone I don't know personally.
 

AlgUSF

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Call me skeptical. Compressor failures are ... well, lets just say I'd want to see the "black death" evidence when the system is opened.
Yep, in 30 years of vehicle ownership I've only had one fail with over 225K miles on it and that was because it got driven through saltwater after Hurricane Nicole a few years ago and the shaft bearing got trashed. I keep my vehicles a long time. I think "compressor failure" gets diagnosed way too often.
 

AlgUSF

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Well I have an appointment for 7:30am to get the A/C recovered and refilled…estimate is $400 max
I'm trying to figure out what recovering and refilling the refrigerant would have fixed? Maybe @mwilk012 can chime in. I get recovering, fixing a leak or failed component, then recharging the system. Doesn't make sense to me.
 

CharlesHS

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I'm trying to figure out what recovering and refilling the refrigerant would have fixed? Maybe @mwilk012 can chime in. I get recovering, fixing a leak or failed component, then recharging the system. Doesn't make sense to me.
Realistically the only thing that recovering and refilling would accomplish would be to weigh in the factory rated amount of refrigerant and then trim the charge (need system rating of subcool/superheat) for temperatures and pressures read.
 

mwilk012

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Yep, in 30 years of vehicle ownership I've only had one fail with over 225K miles on it and that was because it got driven through saltwater after Hurricane Nicole a few years ago and the shaft bearing got trashed. I keep my vehicles a long time. I think "compressor failure" gets diagnosed way too often.
It happens all the time, I see probably 2-5 a week during the warm season. Most common failure for compressors today is the variable displacement compressors just getting stuck at that ~5% output. Other than that, Nissan is the king of compressor failure, the clutches are always going bad. Full on seizure is less common, but does happen.
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