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  #1  
Old 06-28-2012, 08:45 AM
ptmares ptmares is offline
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A/C Compressor Whine

My 2007 Expedition's A/C blows out cool air just fine. My concern is with the whining noise that emits from the a/c compressor. At idle it sounds okay. As soon as rpm's start to rise, the whining starts. Rpm's lower and there is no noise.Does this mean my a/c is about to go out? Thank you in advance.
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Old 07-31-2012, 03:02 PM
89LX306 89LX306 is offline
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My 04 Expedition is getting diagnosed for this same noise right now. I'm not looking forward to the quote.
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Old 07-31-2012, 04:24 PM
ptmares ptmares is offline
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Let me know what they come up with. I'm curious as to what the fix/solution might be. I really notice my noise while doing 65mph and passing a car.
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Old 08-01-2012, 11:27 AM
89LX306 89LX306 is offline
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This video is exactly what mine sounds like. Dealership is saying at least a new compressor. They are still diagnosing.
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Old 08-26-2012, 07:35 PM
bjtor bjtor is offline
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whining noise

I had a whining noise in my 08 Expy that increased with RPM's. Took it to the dealer, who checked it out and said it might be a transmission pump! However, when they actually checked (instead of guessing) they found the idler pully was the culprit. They replaced the part and now it is as quiet as it was when new.
good luck
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Old 08-26-2012, 09:41 PM
ptmares ptmares is offline
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I will have to check mine out. Would be nice if that fixes my issue. Thanks.
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Old 08-27-2012, 12:19 AM
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Just unplug it to see if the noise abates. If noise changes you probably need clutch assy. Save yourself a lot of money diys.
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Old 08-27-2012, 12:19 AM
 
 
 
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