Mechanical question

[rhones]

I have an '01 X5 3.0. When I press on the accelerator during normal accelaration, there is a high pitched squeal as the car accelerates. The squeal goes away if I accelerate faster. Does anyone have any idea what the problem could be? I have 77,000 miles on it and am trying to avoid going BACK to the dealership again, thank you.

[hayaku]

sounds like your belts are due for a change...

[vinuneuro]

Failing tentioner?

[hayaku]

no neccessarily... old belts start to dry and crack and then they screech when they are cold... when they are hot they are pliable again so they quiet down a bit...

the belts are a easy change to diy...

[powers1]

First thing to do is check your belts.
You can perform a simple test to confirm that it is indeed your belts.
-Spray some oil,like WD4O onto to your belts.
-Start you car .
-If the noise temperarily disappears ,its your belts
-If no difference,then it could well be a tensioner as indicated by Vinuneuro