Not something I would worry about. Every so often I get a chirp on shut down. Somewhere I read it was normal for it to do it from time to time. Just make sure your belt isn't worn. It's easy to replace if need be.

 

It is normal for them to make a chirp or squeal at shut down but when you get older you wont be able to here it

 

The chirp was installed at the factory by the gods of unbelievable compression. If it ever runs out of squeak, you may have to rebuild the shortblock after about another 250k miles.

Seriously, as said before, its a cummins thing. The high compression stops the engine so fast once you shut off the fuel, the inertia in the pullies keeps them turning a frac sec longer than the crank.

Love the squeak, embrace the squeak, cherish the skueak. Its proof you don't have a dura-stroke or a power-max. Just a simple mechanical total compression engine named after a man not a sales pitch.

Just my unbiased opinion.

 

ya it just sounds like the classic squeel of a cummins _______________ 1993 d250 ,w/ 3200 gsk,big sticks, 14mm studs,head gasket,timing bumped,and 96mm schweitzer turbo 65psi

 

x2
It's normal for a real diesel to squeak while shutting off.

My 96 does it.

 

I'm embracing my sweet compression!

Thanks

 

Well my new to me D250 has squeaked since I got it. And just the other day I put a new goodyear tensioner on it along with my old gatorback belt from the other truck. Now no more squeak.