I have a manual transmission 4x4 tracker with 2.0 engine. The car squeals from 800 to 1200 RPM
when I am accelerating (I am in 2,3 or 4 th gear - almost lugging the engine). The squeal
happens for 1 to 2 seconds then goes away. It only happens at this RPM range. I replaced
the idler pulley and the tensioner last week and that didn't stop the squeal. I cannot get
it to squeal if I park the car and rev the engine at this same RPM range so I presume
it some drive component causing this and not related to the water pump/alternator.

 

Wheel bearing? Why are you winding it out like that?

 

It is only 800 to 1200 RPMs, I can take a look at the wheel bearings but I think it is unlikely since it is only when I have it a low RPMS then put into 2 or 3 rd and accelerate. If I do anything else there is no noise.Thanks