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-   -   Whining noise (https://www.corvetteforum.com/forums/c5-tech/4127793-whining-noise.html)

MBVette 04-18-2018 10:50 AM

Whining noise
 
so in the last few times I’ve driven the car has developed a whining noise.

It only seens to be audible at 50mph+ and only happens when I’m on the gas. If I let go of the pedal the noise stops immediately.

I have ave tried different gears and that doesn’t seem to matter. And it gets louder the faster I go. At 80 it’s pretty damn loud and annoying.

Any ideas what would cause this?

johnson-rod 04-18-2018 11:36 AM

Any Mustangs around?

usgecko 04-18-2018 12:02 PM

Did you upset the wife?

:hide:

JR-01 04-18-2018 02:07 PM

I get a severe whine from the passenger seat area whenever I go over 100.

runner140* 04-18-2018 03:17 PM

I know what you guys mean .....I hear that same whine sometimes when I'm not even in the car.

Vetteman Jack 04-18-2018 03:20 PM

In order to hopefully get more serious responses, moving this over to the C5 Tech section.

MBVette 04-18-2018 03:23 PM

So assuming you’re home alone and the wife isn’t around, and your ears have stopped ringing from all of the screaming.

And you still hear the sound :lol:

I just opened up the hood and listened a bit and there is a whining noise from the front of the engine but can’t pinpoint the exact spot. Belts alternator? I’m pretty stumped on this

JR-01 04-18-2018 03:26 PM


Originally Posted by MBVette (Post 1597025399)
So assuming you’re home alone and the wife isn’t around, and your ears have stopped ringing from all of the screaming.

And you still hear the sound :lol:

I just opened up the hood and listened a bit and there is a whining noise from the front of the engine but can’t pinpoint the exact spot. Belts alternator? I’m pretty stumped on this

Check your pulleys. They might be dry and need to be replaced.

MBVette 04-18-2018 03:47 PM

That would make sense since it’s after the car sat for most of the winter.

Can you just spray a little bit of white lithium onto them?

JR-01 04-18-2018 04:08 PM


Originally Posted by MBVette (Post 1597025539)
That would make sense since it’s after the car sat for most of the winter.

Can you just spray a little bit of white lithium onto them?

No. If they have been running without grease for awhile they are worn out and need to be replaced.

MBVette 04-18-2018 04:43 PM

Is there any specific pulley I should start with to figure this out? Some pullys are obviously much easier to switch out than others

JR-01 04-18-2018 05:06 PM


Originally Posted by MBVette (Post 1597025944)
Is there any specific pulley I should start with to figure this out? Some pullys are obviously much easier to switch out than others

Try the tensioner pulley first. Take a 15mm socket, take tension off belt and slip it off pulley. Spin pulley and see if it's dry. If it is that one causing the problem, it is best to replace the tensioner with the pulley. It's probably worn out too. Easy job. If the belt is original, it should probably be replaced too.

MBVette 04-18-2018 05:28 PM

Just tested that. And it spins fine but there is a little bit of bearing noise. So I’ll replace that since that’s really quick and easy. And see if it changes anything

JR-01 04-18-2018 05:32 PM


Originally Posted by MBVette (Post 1597026271)
Just tested that. And it spins fine but there is a little bit of bearing noise. So I’ll replace that since that’s really quick and easy. And see if it changes anything

It should not spin freely. There should be some drag caused by grease.

MBVette 04-18-2018 05:51 PM

Well I can spin the things and it just goes and goes for awhile. So I guess it needs to be changed. Lol

JR-01 04-18-2018 05:54 PM


Originally Posted by MBVette (Post 1597026420)
Well I can spin the things and it just goes and goes for awhile. So I guess it needs to be changed. Lol

Yes, it must be dry as a bone. You will see the difference on the new one. A few years ago I changed the pulley without changing the tensioner. Turns out the tensioner was worn out and it wore the pulley out in a year. Best to change entire tensioner with pulley to be safe.

MBVette 04-18-2018 06:43 PM

Ok so when I’m looking around

there is a main drive, ac, accessory pulley/tensionwe. Which is that top one on the passenger side that I’m replacing.

JR-01 04-18-2018 06:48 PM


Originally Posted by MBVette (Post 1597026777)
Ok so when I’m looking around

there is a main drive, ac, accessory pulley/tensionwe. Which is that top one on the passenger side that I’m replacing.

ACDELCO 38194 {#89049312}
Accessory Drive
http://www.amazon.com/ACDelco-38194-...=ACDELCO+38194

You can get aftermarket brands cheaper. Good time to put a new belt on, if it's never been replaced.

MBVette 04-18-2018 06:52 PM

That’s the one I thought perfect. Just ordered it off amazon so I’ll have it to make the swap this weekend

runner140* 04-19-2018 09:46 AM


Originally Posted by MBVette (Post 1597026820)
That’s the one I thought perfect. Just ordered it off amazon so I’ll have it to make the swap this weekend

I might be a little late on this one BUT, if you have not ordered yet, also take a look at RockAuto.:thumbs:


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