Help with squealing noise

[01_Svt venom]

I have an 01 cobra that has been making a squealing sound the past few weeks. It does it on start and when I rev the engine. I thought it was the belt so I replaced it but the sound continues. Found another idler pulley that felt bad so I replaced it but the sound didn't stop. I took the belt off completely and started the car and it still squeals. It sounds like its coming from the driver side valve cover area but I cant figure out what it could be. Any Ideas on what to check for next?

 

[BigEasy]

I cant help you caz i have had the same problem as you, and tryed same things. Hope to get it fixed in my build! Anyone got any ideas to help us out??

 

[jbrown1238]

I have an 01 cobra that has been making a squealing sound the past few weeks. It does it on start and when I rev the engine. I thought it was the belt so I replaced it but the sound continues. Found another idler pulley that felt bad so I replaced it but the sound didn't stop. I took the belt off completely and started the car and it still squeals. It sounds like its coming from the driver side valve cover area but I cant figure out what it could be. Any Ideas on what to check for next?

I am not as familiar with the mod motor construction as I am with the 5.0 pushrod engine. I had a similar problem with my 5.0 and it turned out to be the cam sensor/syncro. I just dropped a little oil on the magnet and the problem has been fixed for the past 2500 miles. I know the two designs are completely different but I thought I would at least mention it.

 

[JCP281]

If you apply pressure to the clutch, does the noise go away?

 

[01_Svt venom]

If you apply pressure to the clutch, does the noise go away?

I tried that too thinking it could be the tob but it's still there

 

[RX1Cobra]

A video with sound would probably help...

 

[01_Svt venom]

A video with sound would probably help...

Yea I will try and post one later today

 

[CammyTheCobra]

I've got an 01, If I'm not mistaken there is 2 idler pulley's and 1 auto tensioner pulley. Seeing as its quite easy to replace these belts, instead of a video with noise, why haven't you taken the belt off and inspected each pulley and the idler idler?

You can post a video, but the reality is, it could be any one of those. We will all be playing guessing games over a forum with noises from a video. I think your best, definitive option would be, to take the belt off and then start the car. If you have no noise, than you've just narrowed it down to just the pulleys. To determine the problem pulley it's very simple. Spin each pulley by hand, if it spins smooth, it's good. (Of course the obvious ones, won't free spin) If you feel a vibration when you free spin a pulley by hand, odds are that's your noise. Alternators can make a noise when the pulley bearing goes, which happens to be in the center of the motor. Either way, pop the belt off, take a few mins to check each pulley. You'll get your answer that way. Let us know what happens.

 

[DSG2003Mach1]

hopefully its not something with the timing chains/tensioner/cams etc...

Only other thing I can think of offhand is are you sure the crank pulley isnt rubbing the timing cover and its just hard to pinpoint the noise? These bonded rubber 2 piece pulleys can separate, they can walk back a little and rub right through the timing cover even.

 

[01_Svt venom]

I've got an 01, If I'm not mistaken there is 2 idler pulley's and 1 auto tensioner pulley. Seeing as its quite easy to replace these belts, instead of a video with noise, why haven't you taken the belt off and inspected each pulley and the idler idler?

You can post a video, but the reality is, it could be any one of those. We will all be playing guessing games over a forum with noises from a video. I think your best, definitive option would be, to take the belt off and then start the car. If you have no noise, than you've just narrowed it down to just the pulleys. To determine the problem pulley it's very simple. Spin each pulley by hand, if it spins smooth, it's good. (Of course the obvious ones, won't free spin) If you feel a vibration when you free spin a pulley by hand, odds are that's your noise. Alternators can make a noise when the pulley bearing goes, which happens to be in the center of the motor. Either way, pop the belt off, take a few mins to check each pulley. You'll get your answer that way. Let us know what happens.

Already had the belt off and the noise is still there so I'm sure it's not the belt or pulleys.

One thing I have noticed though is that while driving its present only when I press the gas. Letting off to coast it goes away. Also seems like the sound travels all the way through my exhaust on the driver side.

 

[OldSVTGuy]

Does the sound come from the driver's side? I seem to recall that the PCV valve can make a whistling noise. Might try looking at that. Just an idea.

 

[01_Svt venom]

Here is a quick video I took. It seem like it was coming from the bellhousing area but still not sure. Any ideas?

https://www.youtube.com/watch?v=foy6GflMvKc&feature=youtu.be