Annoying noise coming engine!

[Lucky_Ls]

What's up guys!
I've own my LS since April of last year. Let me just say that I love my car!!! Anyway, I've notice an annoying noise coming from the engine when I'm going over 20mph to about 40mph (after 40 I hear the magnaflow exhaust and the other more natrual engine sounds). The noise is freaken driving nuts! It almost sounds like a video tape rewinding. At 20mph it starts and the noise starts accelerate after 30mph. The noise is also there when I'm slowing down as well!
I haven't noiced a difference in performance sinces the noise began but it makes me want to go faster so I don't hear the noise! I've check my belts and there fine. Could it possibly be a pully? If any of you have experienced this or have any advice it will be greatly appreciated.

 

[o3sonicbluexlt]

i actually have a similar problem. i have that noise when the temp is below freezing, while i am at idle, and when i am decelerating. i havent found the cause, but would also like to hear why this is happening to our cars.

 

[Lucky_Ls]

It really sucks because when I'm out drive with my friends or my girl I have to deal with the sound. I find myself talk very loud when I begin to hear the noise. I'm sure who every is in my car at that point and time is like; dude, I'm right here!!!
I've taken it into a couple of places but they say they can't hear the sound. I haven't taken it into the dealership yet but that's my next move.

 

[Kelleyo]

What's up guys!
I've own my LS since April of last year. Let me just say that I love my car!!! Anyway, I've notice an annoying noise coming from the engine when I'm going over 20mph to about 40mph (after 40 I hear the magnaflow exhaust and the other more natrual engine sounds). The noise is freaken driving nuts! It almost sounds like a video tape rewinding. At 20mph it starts and the noise starts accelerate after 30mph. The noise is also there when I'm slowing down as well!
I haven't noiced a difference in performance sinces the noise began but it makes me want to go faster so I don't hear the noise! I've check my belts and there fine. Could it possibly be a pully? If any of you have experienced this or have any advice it will be greatly appreciated.

Could be the hydraulic fan assembly. Is your car pre 2003? If so it has a hydraulic fan.

 

[Lucky_Ls]

Cool, now I'm getting somewhere. I have a 02 V8. How do I check the fan or is it something the shop with have to look at?

 

[Lucky_Ls]

Cool, now I'm getting somewhere. I have an 02 LS V8. How do I check the fan or is it something the shop would have to look at?

 

[bigpappy33]

If its not the fan check all of your vaccum lines one of them could be leaking causing the noise.

 

[Lucky_Ls]

I'll check those out as well.