A/C Compressor Whine

Reply Subscribe

Thread Tools

Search this Thread

Jun 28, 2012 | 07:45 AM

ptmares

Thread Starter

New User

Joined: Apr 2012

Posts: 24

Likes: 0

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.

Jul 31, 2012 | 02:02 PM

89LX306

Fleet Mechanic

Joined: Jul 2003

Posts: 1,815

Likes: 24

From: Houston

My 04 Expedition is getting diagnosed for this same noise right now. I'm not looking forward to the quote.

Jul 31, 2012 | 03:24 PM

ptmares

Thread Starter

New User

Joined: Apr 2012

Posts: 24

Likes: 0

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.

Aug 1, 2012 | 10:27 AM

89LX306

Fleet Mechanic

Joined: Jul 2003

Posts: 1,815

Likes: 24

From: Houston

This video is exactly what mine sounds like. Dealership is saying at least a new compressor. They are still diagnosing.

Aug 26, 2012 | 06:35 PM

bjtor

Freshman User

Joined: Aug 2008

Posts: 44

Likes: 0

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