loud screech noise

[head_trauma911]

Only when I have it on 90-100 %throttle i hear a loud screetching sound coming from the engine. Drives fine no propblems. Normal noise when driving normal only on hard acceleration i hear this noise, picture the sound of a turbo spooling up and not making the psssssssttttt blow off valve noise . is it the belts?

 

[Defiant]

http://www.dsmtuners.com/forums/pro...-just-time-pics-video.html?highlight=harmonic

 

[bullettdsm]

Going on purely description it could be turbo.......

MB

 

[head_trauma911]

Mine only makes the sound when I have it on 90-100% throttle. Picture a car with turbo driving and imagine the noise you hear BEFORE the blow off valve sounds(that spooling up noise) is what i hear from my car but my car is NOT turbo. Car drives fine its just that noise , does something in the engine spin faster the harder you have your foot on the pedal?? its a spinny type of noise by the way to only and only when i pucnh the gas, its not when the RPMs go up high either i can let it go high and not punch it and it wont make that noise, its not too terribly loud either but loud enough to hear it. any help thank-you ....

 

[bullettdsm]

car but my car is NOT turbo.

< lookie to the left on your information. Your description says with turbo.

Do you have an automatic? Do you notice loss of power at the time it happens? Do you have an intake leak before the throttle body? Just undo the intake at the throttle body and see if the noise goes away.

MB

 

[head_trauma911]

I don't know how to change my car info. The car is not turbo. No loss in power when i punch it. Everything else is normal except when i puch the gas it makes a soond like i got a good intake but its stock, whining kind of sound high pitch, loud but not too loud, if i had exaust you might be barely able to hear this sound..

 

[99RedGs]

Belt could be glazed and slipping?

They could be loose too. There is probably enough tension to hold them on fine at lower rpms, but it is too loose to hold at WOT

 

[brandenblaze]

or it could be that wastegate sound NT's exhaust note makes at WOT with a race cat or broken in cat???