Squealing noise coming from engine.

BigCatKy · Feb 27, 2021

Today when I started my 2016 international box truck, there was a load squealing noise coming from the engine. I’ve heard before but it went away. Today it’s not going away. Does anyone have an idea of what this is and is it still safe to drive?

rachi · Feb 27, 2021

Yeah, its probably your fan (drive belt)

McMahons Trucking · Feb 27, 2021

The belt tensioner, belt or an accessory ran by the belt. Just check it all.

BigCatKy · Feb 27, 2021

Thanks for the info. Unfortunately I’m not mechanically sound. Is this something that I could possibly still drive with about 500 miles until I can get it in the shop on Monday?

Numb · Feb 27, 2021

when you opened the hood , where exactly was it coming from.

I'm assuming you did check under there.

BigCatKy · Feb 27, 2021

I did! It’s coming from around the belts.

Flint1 · Feb 27, 2021

6.7L cummins ISB? Belt tensioner. Look at the pass side, the tensioner will be crooked. It will walk the belt off the fan pulley, and rip the wires out of the electric fan hub if ignored too long.

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