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AC compressor noise


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Old 04-15-2010, 05:46 PM   #1 (permalink)
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When I turn on the AC I get a fairly loud clicking sound that emits from the compressor. I got under the car to listen and it's coming from the compressor clutch when it engages, the clicking stops when it cycles. Since I have not had this car from new I don't know if this is normal. It's fairly loud so I doubt it's supposed to make this noise. Since I have a $100 deductible on the extended warranty I thought I would ask first since I don't want to spend $100 at the dealer to analyze and be told it's "normal". This is on a 05 XLT with 5.4.
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Old 04-15-2010, 06:00 PM   #2 (permalink)
 
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no its not suppose to make a loud noise... it could be as simple as the clutch needs rebuilt or the compressor could be on its way out
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Old 04-16-2010, 12:22 AM   #3 (permalink)
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Try spraying WD-40 on the clutch (while the engine is turned off unless you like to shower in it). If the noise stops you got your answer. Mine does the same thing. I'm just waiting till it goes out to replace it.
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Old 04-16-2010, 12:33 AM   #4 (permalink)
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Sorry, when I say repace it, I mean the clutch, compressor, ect... Just replacing the clutch (I've heard) is a pain and not worth it. The last time I checked, theres only a $50 difference between buying the clutch and the whole assembly. Good luck!
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Old 04-16-2010, 10:53 AM   #5 (permalink)
 
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That magnetic clutch needs to stay clean and oil free. Don't spray it with WD or it will slip and could burn itself up.
You're much better off using a carb cleaner spray or brake kleen on it to get all the gunk out of the assembly. Not to mention that you don't want WD on the serp belt.
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Old 04-16-2010, 11:59 AM   #6 (permalink)
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I have never seen a vehicle with the AC compressor mounted on the bottom of the engine like this, one would think this makes it very open to debris and water getting into the clutch, so I was thinking it could be something that is lodged between the clutch and housing. I would not spray it with WD for reasons noted, but the carb or brake clean idea might work. I will call a local AC shop first, if all else fails I guess it's $100 for me to have Ford replace it under the warranty if it's not a normal sound that is.
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