Originally Posted by jz78817
it'd help if you could get a recording or video of the noise. it could be as simple as something like the throttle plate closing when you turn the car off. if it seems more prominent after changing the belt, then it could be something like the "Cummins squeak." meaning, Dodge trucks with the Cummins turbodiesel will squeak when turning the truck off because the engine stops so fast the accessories are still spinning and slip on the belt.
Welp, that's it. I quit. I've seen all there is to see on this forum. Never did I expect to see a reference to the "Cummins squeak."
But, yes, the Cummins squeak is legit.