This morning I started my stock 2005 and the truck vibrated like never before. It was about 10 degrees F--but the truck was plugged in all night. I shut the motor off and checked the engine oil level. It was fine so I restarted the truck and just let it vibrate while the truck warmed up for about 10 minutes. The vibration was even noticeable through the driver's seat. When driving, the truck would vibrate whenever the truck was near idle or low rpms. It smoothed out a bit at higher rpm's. Even after the engine warmed up, it still vibrated, but not quite as much. The truck has an automatic transmission, could that have had something to do with the way the truck shook?

 

My truck did the same thing the other day. I would also like to know what was going on with this?

 

Almost sounds like one hole isn't firing. Does it eventually clear up?

 

My truck does the same thing but only when its in the teens or lower. I'm assuming that the cylinder temputure gets to low & causes complete burn, cuz once it gets above 30s it smooths out a little bit.

Then again I've only worked on diesel generators.

 

It never really smooths out, even when it is a bit warmer. Since I have less than 50k on the motor, I'll probably just drop it off at the dealer for a while. I did fill up the tank the evening before it started acting up. But since, I've added cetane boost to the fuel and changed the fuel filter...no real change. What is even more concerning than the vibration is that when I shut the motor off, it makes a very hard thud noise which never happened before the motor vibration. Could an injector/pump be bad? Will the motor throw codes without turning on the check engine light?

 

When it's colder - below 20F, my truck rumbles, shakes, and puffs a little white smoke for a couple seconds if I don't plug it in, but it smooths out very quickly. I have never had a bad vibrations or rough running issues other than this. It has always shut down with a thud, it may be a little more pronounced with the colder weather - but nothing I felt concerned about.

 

I've been driving diesel vehicles for the last few years and have never had a motor stop this way (except if the Jetta stalled). It is a horrible thud that I have never heard out of this truck during the last 2 years. It hasn't even been as cold the last few days as earlier this year. It stops the same way in the afternoon as it does in the morning. The motor has been warm when turned off. I did find a P0514 engine code for what it's worth--probably not much, though. I forgot to mention earlier that when I changed the fuel filter, I bumped the starter and didn't hear the lift pump kick on. I bumped the starter a few more times and never heard the lift pump, but assumed the background noise was just masking it. If the lift pump isn't sending enough fuel, could that cause the rough shut downs, erradic low speed idle, etc? Thanks.

 

In your owner's maunual there is cold weather starting procedures. I thought it weird to but it says after start up bring the rpm's up to 1200-1500 and hold it. I figured that would be bad on a cold motor but it's there in the owners manual.

 

I notice a little bit of a vib in my truck when its outside idleing (cold) then it goes away. Its very very small. but im a picky as* and can tell such a thing lol

 

I took the truck to the dealer last Friday, and there was a big block of ice around the motor and transfer case. No wonder the entire truck was vibrating--the motor mounts weren't able to do their job and absorb the vibration. Everything seems better now that my truck spent a few days in the garage thawing out.

 

Blocks of ice.

We just had 30" of snow dumped on us in Vermont. Driving around on back roads and highway caused snow and ice to build up under the truck. Wife made comment about it and I looked and couldn't believe it. Ice/Snow was hanging from the tranny and transfer case to the point of almost touching the ground, like 3" to go. All stuffed up in the gas tank area also, around the spare tire, it was every where.

Took about 2 hours of letting it sit with the 110K btu salamander blowing on everything. I don't have a garage so it was outside getting this treatment. Plus me crawling underneath tapping with a hammer and poking with a screwdriver to break it up faster. I got soaked from the ordeal but truck back to normal.

I just never saw so much crap stuck to it.

 

A guy I work with bought a 1500 4x4 QC Hemi last month. We had ~ 8" of snow last week and when he was getting on the highway, his front end starting shaking. The steering wheel was going crazy.

He called the dealer and they told him they got several calls about this. He had snow packed in somewhere. He has the 20's so between them and the front end components, that gave it the shakes. He went through a car wash and everything was fine after that. It started shaking @ 50 mph.

 

I test-drove a 2500 hemi with a friend the other day and it shook like a dog 'passing' razor blades. Turned out there was originally snow in the bed which the sun melted and the bed dripped water on the drive shaft causing it to freeze like a growth on the side. Enough bad balance to shake the whole truck!