How to stop loud screech at shutdown

[MMead]

I know it's normal for the engine to make the screeching sound when you turn the motor off (according to the posts I've read here), but does anyone know how to eliminate the noise, or at least quiet it down a little. Mine does it every time, and my passengers always want to know what's wrong with my new truck. From what I've read it's just the engine stopping faster than the belts, so is there anything that could be sprayed on the belts? Thanks for any suggestions.

 

[RankRam]

My 03 does not do the screech.



My 99 did though and I put a Goodyear Gatorback on and never heard it again.

 

[RustyJC]

If you really want to neuter part of the Cummins' personality, get a Goodyear Gatorback belt.



Rusty

 

[Jeff Clark]

I've had 4 Dodge/Cummins trucks and none had the chirp. My dad has had 2 and both of his had it. Can't figure out why some do and others don't. Personally, I'm glad mine doesn't do it.

 

[John - K5AWO]

It don't hurt anything. I would suspect the belt tensioner spring is tighter on those that don't chirp at shutdown.

 

[Forrest Nearing]

spray some WD40 on the belt

 

[jchapin]

Pass out earplugs or turn up the music before shutting down



If your passengers believe it has to do with faulty operation, brag to them about it being because these engines have more mass and torque than most passenger vehicles and that when the CTD wants to stop, it stops; regardless of whatever else is hangin' on. That little chirp is just an auditory reminder that the serpentine belt is at it's correct tension...

 

[MMead]

I've been telling people the semi's make that sound too when they shut down, but I have to admit I'm not sure if that's true. Does anyone know if semi's with Cummins also make that sound?

 

[XcumminsX]

You can go buy a fake diesel ford/ gm also you can get a truck that rides like a womans minivan :-laf

 

[klenger]

1) Don't start it.



2) Don't shut it down.



3) Buy a better stereo.

 

[rbattelle]

I believe it's mostly trucks with an automatic transmission that make the belt squeek. Mine is a 6-speed and has never squeeked the belt. Must have to do with the mass difference between the clutch assembly and a torque convertor/flexplate.



Try a little belt dressing on it. That may stop it. I'd do that before buying a Gatorback.

 

[RankRam]

I've been told that belt dressing is bad.



On the other hand having a spare belt is very good! Get the Gatorback and put your stock belt in your toolbox.



You won't be sorry.



rbattelle I'm not flaming you by the way.

 

[Jeff Clark]

Originally posted by rbattelle

I believe it's mostly trucks with an automatic transmission that make the belt squeek. Mine is a 6-speed and has never squeeked the belt. Must have to do with the mass difference between the clutch assembly and a torque convertor/flexplate.

That's a very valid point. All my trucks were manuals and didn't do it. Both of my dad's were autos and did it.

 

[KD7GYJ]

My first two CTD's (98. 5 (auto) and "02 (6 speed)) chirped loudly when I shut 'em off. My new 04. 5 doesn't chirp when I shut 'er down.



Blair

 

[CStansbury]

No chirp on mine, but I do love the way it rocks the whole truck when it shuts down, woo-hoo!

 

[Crunch]

Originally posted by MMead

From what I've read it's just the engine stopping faster than the belts, so is there anything that could be sprayed on the belts? Thanks for any suggestions.

I've always interpreted the screech as meaning my engine has plenty of compression. I hope it screeches for the next 300,000 miles. If it were me, and the passengers were commenting on it I'd just say that one of the kittens must have fallen off the air intake housing.

 

[CumminsBu]

Sometimes when the A/C is on when I shut down the engine the belt screech. Try turning the A/C off, then the engine.

 

[KHogan]

Mine Chirps (auto trans).

 

[Moose Truck]

Both the '89 and the '00 do it and they both are Autos.

 

[XcumminsX]

mine does it... i like it and it turns da girlies on.