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The cummins shake at shutdown? #4798276
06/26/18 08:11 PM
06/26/18 08:11 PM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
I took this girl on a date (if you can believe that) and when I shut off my truck, she goes is it supposed to do that?, to which I responded yes. lol I didn't bother going into detail as to why and bore her to tears, but it's my understanding that since a diesel takes in a full charge of air even at idle that's how it shakes so much along with the high compression. Now how come the powerstroke and Duramax doesn't shake and only the cummins does?


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798282
06/26/18 08:14 PM
06/26/18 08:14 PM
Joined: Apr 2017
Posts: 966
SF BAY AREA, CA
dogememe Offline
dogememe  Offline
Joined: Apr 2017
Posts: 966
SF BAY AREA, CA
Originally Posted By: motor_oil_madman
I took this girl on a date (if you can believe that) and when I shut off my truck, she goes is it supposed to do that?, to which I responded yes. lol I didn't bother going into detail as to why and bore her to tears, but it's my understanding that since a diesel takes in a full charge of air even at idle that's how it shakes so much along with the high compression. Now how come the powerstroke and Duramax doesn't shake and only the cummins does?


when i had my envoy with the inline-6 vortec 4.2 engine it did what you're calling "the cummins shake" and it's a gas engine. not sure if that was because of worn motor mounts but it did that most of the times when i shut it off. perhaps it has to do with inline-6 engines?

Last edited by dogememe; 06/26/18 08:15 PM.

2007 Crown Vic P71 4.6 ~127K Miles, RP HPS 5W-30, RP 20-820, Daily Driver.
2010 Escape FWD 2.5 ~90K Miles, Castrol Edge EP 5W-30, Wix 51348, Rented on Turo.
Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798286
06/26/18 08:25 PM
06/26/18 08:25 PM
Joined: Mar 2013
Posts: 3,298
southern mo
ram_man Offline
ram_man  Offline
Joined: Mar 2013
Posts: 3,298
southern mo
I've been in several power strokes that do it mainly older ones. I always just assumed they probably designed the mounts to isolate more of that. The cummins is a cool man's man diesel. I always loved the shake and even the belt squeal at shut down.


2014 dodge dart GT
1995 Dodge ram 1500


Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798288
06/26/18 08:27 PM
06/26/18 08:27 PM
Joined: Nov 2017
Posts: 241
California
CleverUserName Offline
CleverUserName  Offline
Joined: Nov 2017
Posts: 241
California
Most modern diesels have a butterfly valve on the intake to prevent this from happening. I believe VW called it the “ anti shutter valve.” Regardless, that is what’s it’s designed to prevent.

Re: The cummins shake at shutdown? [Re: CleverUserName] #4798298
06/26/18 08:39 PM
06/26/18 08:39 PM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
Originally Posted By: CleverUserName
Most modern diesels have a butterfly valve on the intake to prevent this from happening. I believe VW called it the “ anti shutter valve.” Regardless, that is what’s it’s designed to prevent.
I figured that's what it was. Mine has one too, but I guess they don't have it programmed for that. I think they would lose too much market share if it didn't shake. lol


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798301
06/26/18 08:41 PM
06/26/18 08:41 PM
Joined: Dec 2015
Posts: 160
Texas
PumpPusher Offline
PumpPusher  Offline
Joined: Dec 2015
Posts: 160
Texas
My Cummins 6.7 and Powerstroke 7.3 both shake as well as every diesel big and little I've driven.

Re: The cummins shake at shutdown? [Re: PumpPusher] #4798309
06/26/18 08:46 PM
06/26/18 08:46 PM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
Originally Posted By: PumpPusher
My Cummins 6.7 and Powerstroke 7.3 both shake as well as every diesel big and little I've driven.


They do but not nearly like a cummins does.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798328
06/26/18 09:01 PM
06/26/18 09:01 PM
Joined: Jul 2004
Posts: 12,031
Middlesex County CT
simple_gifts Offline
simple_gifts  Offline
Joined: Jul 2004
Posts: 12,031
Middlesex County CT
Drove a coworker's 2002 RAM 2500 and I noticed this as well; I just figured there were some big honkin' pistons coming to a stop and the CR probably didn't help.


2004 Prius; 97K ML Syn 5W-30
2007 Yaris 71K 0w-40 Castrol
2006 B2300;130K;ALM


Was driving an ox cart; Now on the USS Enterprise
Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798331
06/26/18 09:03 PM
06/26/18 09:03 PM
Joined: Jan 2017
Posts: 1,337
Toronna
maxdustington Offline
maxdustington  Offline
Joined: Jan 2017
Posts: 1,337
Toronna
Originally Posted By: motor_oil_madman
I took this girl on a date (if you can believe that) and when I shut off my truck, she goes is it supposed to do that?


I thought every third vehicle in Tejas was a diesel truck?


03 Jetta AWP/09A 200k kms
Edge 0W40 + Mann 719/30
Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798341
06/26/18 09:16 PM
06/26/18 09:16 PM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
Sounds about right. lol


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798367
06/26/18 09:52 PM
06/26/18 09:52 PM
Joined: Feb 2015
Posts: 707
Sask, Canada
BrianF Offline
BrianF  Offline
Joined: Feb 2015
Posts: 707
Sask, Canada
My wife and her mother test drove a few trucks a few years back, thinking 2006. One was a 5.9 common rail. She hated the lope of the engine and commented on the shutter at shut down. She never wanted to own a diesel. Fast forward late 2016 and we started testing diesel trucks again. She loves the Cummins now and loves the shutter at shut down.


I think its the high compression which is more noticeable as the rpm drop on shut down. What ever the cause, the women like it.


2006 Trailblazer LT. Castrol Edge with Fram Ultra.
2017 Ram 3500 SLT Megacab. Duron SHP 10w30 with Hastings LF608.
1993 GMC 1500. It has oil and still runs
Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798373
06/26/18 09:55 PM
06/26/18 09:55 PM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
Typical woman. Always changing their mind. lol


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798382
06/26/18 10:03 PM
06/26/18 10:03 PM
Joined: May 2015
Posts: 235
Indonesia
nyumski Offline
nyumski  Offline
Joined: May 2015
Posts: 235
Indonesia
Originally Posted By: motor_oil_madman
I took this girl on a date (if you can believe that) and when I shut off my truck, she goes is it supposed to do that?, to which I responded yes. lol I didn't bother going into detail as to why and bore her to tears, but it's my understanding that since a diesel takes in a full charge of air even at idle that's how it shakes so much along with the high compression. Now how come the powerstroke and Duramax doesn't shake and only the cummins does?


the engine shook like when the washing machine shut down and always like shaking a lot?

once i have that experience while start the engine, the car looks shaking a lot and also when off the engine.

in the weekend i checked and turned out that the problem in engine mounting that needs to be changed. according to maintenance internal, it needs to be changed every 4 year. then i changed it and voilaaa it works the problem. i do not know it will help you or not.


14 Toyota 2.5 D4D - PTT 10w30 CL4 --> oil from Thailand
Re: The cummins shake at shutdown? [Re: motor_oil_madman] #4798412
06/26/18 11:00 PM
06/26/18 11:00 PM
Joined: May 2013
Posts: 1,092
upstate NY
dustyroads Offline
dustyroads  Offline
Joined: May 2013
Posts: 1,092
upstate NY
My Freightliner (with a Detroit) has a start/stop system for maintaining cabin temp, oil temp and battery charging. It's supposed to "burp" (for lack of a better word) the Jake Brake when shutting off. It makes the engine stop quick and smooth. Unfortunately, it doesn't always work and shuts down with the typical shake of the truck.

It really is a dramatic difference and nice when the Jake stops it quickly.


2013 F150 XLT 5.0 4X4 101k miles
Edge 5W-30 / Fram 10575
Re: The cummins shake at shutdown? [Re: CleverUserName] #4798472
06/27/18 02:38 AM
06/27/18 02:38 AM
Joined: Feb 2015
Posts: 2,202
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,202
Slovenia EU
Originally Posted By: CleverUserName
Most modern diesels have a butterfly valve on the intake to prevent this from happening. I believe VW called it the “ anti shutter valve.” Regardless, that is what’s it’s designed to prevent.


Yup! Thats OP problem...that valve is gear driven (plastic gears)...and when gears wore out that valve is unable to close itself...

In 98% you have to buy new one...in 2% you can postpone that problem for a while if you open its gearbox mechanism and rotate gears the way that the missing/shared tooth doesent Prevent valve to close itself....


2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
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