serpentine belt

[maverick_935]

has anyone had what sounds like a belt slipping under hard acceleration

i only hear when i really put my foot into it.

[rapidoxidationman]

How does it sound when you make the belt slipperier by putting water on it?

With the belt removed, does the belt tensioner move smoothly and offer good resistance from stop to stop? How do the tensioner pulley and the idler pulleys sound?

With the belt removed, how does the engine sound when you blip the throttle?

You sure it isn't the turbo? Or maybe an exhaust leak whistling from where the EGR blocker plate is installed?

[maverick_935]

its more of a squeal then stops under hard acceleration which is why im thinking the belt

will check check all idlers and everything when the belt comes off

[rapidoxidationman]

After replacing a head gasket a few years ago i had an awful squeal under hard acceleration. I was sure I had cooked the bearings in my turbo, because the truck had overheated once. Closer inspection revealed a slight exhaust leak at the back of the EGR tube on the passenger side of the engine, right by the turbo. Exhaust gas would whistle out a slight gap, and sounded just like a bearing going south.

Might not be what you're hearing, but it might.

[More Power]

The water pump is gear driven, so it's possible to drive the truck with the belt removed. There's a belt-driven power steering pump, so there wouldn't be power brakes or power steering. Be careful.