Chevy s-10 2.2L Engine Noise!?

hl2cjm

New member
I have a 2000 chevy s-10 Auto with a 2.2L engine with 166K miles, at about 1.5-2K rpm the engine makes a rattle noise that almost sounds like a marble in a can with no consistency, Under a load or at higher RPM the noise disappears! any idea? Does not matter if the truck is in park or drive and it sounds like its towards the back of the motor when i listen under the hood!
 
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