Sometimes when I am driving I can hear some screeching coming from the engine are. Can someone tell me what it is.

 

We're going to need a little more info than that. Does it occur on the throttle, letting off the gas, only under boost, only at idle, any idea of location in the engine bay, etc. You need to be a little more specific.

What's the condition of your fan belts?

 

It happens when I drive under boost around 2000 to 3000 RPM's.

 

Also, let us know at what rpm you are hearing the screeching. If it stops after about 3500 rpms, it could be your airpump failing.

 

I changed both of my belts three days ago, but it still kept screeching. I will replace my airpump and see if it goes away. I will reply if it does not.

 

Try pulling the electrical connection to the airpump and take a drive. See if the noise still happens.

 

If you just replaced the belts, they may be too tight or not tight enough - sounds like belt squeal. Cheap belts will squeal frequently - use good quality belts.

Dale