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98 S10 with Squealing Belt only when AC is on...


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Shikarnov
New User

Jul 3, 2011, 12:14 PM

Post #1 of 8 (3289 views)
98 S10 with Squealing Belt only when AC is on... Sign In

Hi All,

My 4-cylinder 1998 Chevy S10 (approx 160,000 miles) has a squealing/whistling belt. The strange part is that the noise only happens when the air conditioning is on AND the gas pedal is not pressed (eg, when slowing down, or idling). Turn off the AC and the noise goes away.

Does anybody have any idea what could be going wrong?

Thanks,

Z


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 3, 2011, 12:50 PM

Post #2 of 8 (3278 views)
Re: 98 S10 with Squealing Belt only when AC is on... Sign In

First, you need to determine if the noise is actually being caused by the belt. Get a spray bottle with some water in it and mist it on the belt itself while the noise is present. If it immediately disappears, then the belt or it's tension is the problem.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Shikarnov
New User

Jul 3, 2011, 2:08 PM

Post #3 of 8 (3271 views)
Re: 98 S10 with Squealing Belt only when AC is on... Sign In

I tried your suggestion and sprayed the belt with some water. The noise persisted.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 3, 2011, 2:11 PM

Post #4 of 8 (3268 views)
Re: 98 S10 with Squealing Belt only when AC is on... Sign In

That proves the belt is not the problem and you're looking in the wrong place. You're going to have to isolate the source of the noise.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Shikarnov
New User

Jul 3, 2011, 4:07 PM

Post #5 of 8 (3264 views)
Re: 98 S10 with Squealing Belt only when AC is on... Sign In

I don't suppose you have any advice on figuring that out? The noise seems to "move" depending on my position relative to the vehicle. It's been quite difficult to localize... I'd assumed it was a belt because I couldn't think of anything else that would squeal...


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 3, 2011, 4:09 PM

Post #6 of 8 (3261 views)
Re: 98 S10 with Squealing Belt only when AC is on... Sign In

It takes a talent and experience to find things like that.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Shikarnov
New User

Jul 4, 2011, 4:04 AM

Post #7 of 8 (3254 views)
Re: 98 S10 with Squealing Belt only when AC is on... Sign In

So, in other words, time to bring it to a garage...


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 4, 2011, 4:43 AM

Post #8 of 8 (3251 views)
Re: 98 S10 with Squealing Belt only when AC is on... Sign In

If you can't find it, that's the option you're left with. I can't listen to it from here.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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