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-   -   Engine Shut Down Chirp (https://www.dieseltruckresource.com/forums/3rd-gen-engine-drivetrain-2003-2007-102/engine-shut-down-chirp-53660/)

Hoss Oct 28, 2004 07:15 AM

Engine Shut Down Chirp
 
Why is it that some 3rd gens have the chirp and some don't? My truck has never done it but in the past few days I've personally witnessed three different ones that did. [eyecrazy]

BB6Wheeler Oct 28, 2004 07:47 AM

Hoss,
Mine "Chirps" at least 95% of the time:confused: Hope this is normal.

jbrown2861 Oct 28, 2004 08:15 AM

MY buddy has a auto and his chirps every time he shuts down. I have the 6 sp manual and it never chirps.

HdPower Oct 28, 2004 08:40 AM

Mine "chirps" maybe 85 % of the time...the other 15 % it kinda makes a Prissssssssssh....clank noise when shutting down, not quite sure what that is.

Pointing Labs Oct 28, 2004 08:42 AM

It is in the manual, It will do it a lot of the time.....and it is normal

Hoss Oct 28, 2004 02:37 PM

I understand that it's normal, but why do some trucks do it and others don't? Mine has NEVER done it....but lately I've seen several others that have.


MY buddy has a auto and his chirps every time he shuts down. I have the 6 sp manual and it never chirps.
Hmmmm.....I wouldn't think the transmission would have anything to do with it but maybe that's the key??

[eyecrazy]

Peterbilt Oct 28, 2004 03:22 PM

My chirps. The better it's running the louder it chirps. It's music to my ears;)

I belive the gatorback belts eliminate it.

Pete

Pointing Labs Oct 28, 2004 04:04 PM

I am pretty sure it is because we have automatics and you don't....I will check in the book because it says what it is but I haven't had the chance to look it up..

wannadiesel Oct 28, 2004 04:50 PM

The big heavy clutch and flywheel on a manual make the crank stop more gently than the lighter flexplate and torque converter on the automatic.

Hoss Oct 29, 2004 06:50 AM

So now we know.....I guess. :)

Tmc243 Oct 29, 2004 09:39 AM

When you shut down our engines there is so much compression, that the crank pulley stops turning before the rest of the pulleys, (kind of like locking up your brakes and the tires skidding) causing the serpentine belt to slip on the pulleys and make a chirp noise.

MOPE540 Oct 31, 2004 07:08 AM


Originally posted by Tmc243
When you shut down our engines there is so much compression, that the crank pulley stops turning before the rest of the pulleys, (kind of like locking up your brakes and the tires skidding) causing the serpentine belt to slip on the pulleys and make a chirp noise.
thanks for the explanation... I had no idea what caused the chirp, and passengers often ask "what was that?"..now I know what to tell 'em
my automatic does it maybe 60% of the time.

mikmaze Oct 31, 2004 08:17 AM

if ya want it to stop a little wd40 will halt that noise[laugh]

t-15 firefighter Oct 31, 2004 11:05 AM

mine does it like a madman!!

almost EVERY time i stop the engine. i really thought something was wrong with it. glad i belong to a place that you can get some good quality information :D
my 03 was a 6 speed and never did it but this one is an auto so that must be the cause.



britt




:)

SuperGewl Nov 1, 2004 01:58 AM


Originally posted by mikmaze
if ya want it to stop a little wd40 will halt that noise[laugh]
You may NOT want to use anything like that on there. It can lead to other problems such as the belt slipping off, or causing the belt to deteriorate. Just my penny worth of advise.:D


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