Slight squeaking when AC kicks in...?

[Raymond]

It's hardly noticeable, but little things like this tend to bother/scare me...

It's a squeak that comes from the passenger side... it's a steady noise and originally I was thinking it was the belt or something. But I later realized that if I turned the AC off that the noise magically vanished.

AC compressor maybe? I had a similar problem on my last Mustang I bought used and it ended up being the alternator. When the AC was off it was fine but when I turned it on, the extra power would make the thing whine like a bitch.

Any ideas? I don't want to fix something that isn't broken haha, it's not even loud or annoying, I just notice it from time to time. If I have my radio on, even the lowest level, I won't hear it at all.

 

[BlkCurrantKord]

Check the tension on the belt.

 

[Raymond]

mmkay, how tight should it be?

 

[[email protected].]

My service manual says with a new belt the deflection should be 0.16-0.24 inches, and with a used belt, 0.28-0.35. But they also list the force that you're pushing on the belt as 22lbf. Who knows what 22 foot-lbs is like for a force, but I suppose it would only stand to reason that if you're measuring the deflection, you have to know the amount of force being applied to it.

Hope that helps...

 

[HondaLuver83]

maybe ur compressor clutch is squeaking.

 

[finch13]

The typical deflection I use is 1/4" in a 7" span of belt (7" between pulleys) and 1/2" in a 13" span.

IF you over-tension a belt, you can easily wear the bearings on the accessory.

You said passenger side... all the things people have listed are on the drivers side (A/c comp, alt, etc.) have someone :leeann: turn on the A/c while youre under the hood.

 

[HondaLuver83]

The typical deflection I use is 1/4" in a 7" span of belt (7" between pulleys) and 1/2" in a 13" span.

IF you over-tension a belt, you can easily wear the bearings on the accessory.

You said passenger side... all the things people have listed are on the drivers side (A/c comp, alt, etc.) have someone :leeann: turn on the A/c while youre under the hood.

Hahah hes right, our ac compressor is on the drivers side. I was thinking of my toyota avalon LOL. Because that one has a squeaky ac compressor and its on the passenger side. hahaha

 

[finch13]

Hahah hes right, our ac compressor is on the drivers side. I was thinking of my toyota avalon LOL. Because that one has a squeaky ac compressor and its on the passenger side. hahaha

Ah... just remember her has an AV6... I think all the accessories are on the passenger side...

 

[BlkCurrantKord]

V6 is the pass side

 

[cajun]

Like others said, you should be able to tell if it's coming from the compressor by having someone else click it on/off with you under the hood. You can figure out if it's a belt by spraying belt dressing on them. I used to hear the sound you describe when I'd turn on my old S10's compressor - the bearings started crapping out and whined like a mofo. I drove it like that for two years and then replaced it when a seal blew.