Coachdent2lw

I have developed a shuttering problem or vibration under my drivers foot only when i let off the gas around 62-70. Once it gets below 60 it stops or when I put my truck in neutral. I had my transmission rebuilt about 2 months ago with a new torque converter put in and a cooling system for the transmission. Once i updated my gears to the 4.88 is when this started to happen. I also just replaced all tie rods, all ball joints, and left hub. Tires have been balanced and alignment completed. Drive shaft was checked and came back in spec. So has anyone had this problem with their lifted truck???? Diff and transmission shop both tell me everything looks good and the vibration is coming from the lift since my gears are causing my drive shaft to turn faster. I just find it strange that this only started to happen with my new gears???? Thanks for any info..

SuperCrew 4x4 6" Suspension Lift, 3" body lift, 1.5" front leveling kit, 37" MT, rear leafs, 4.88 motive gears, flow master exhaust, Gryphon Programmer, K&N Air Filter

Coachdent2lw

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Coachdent2lw

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Crazy4x4

Here is a technical service bulletin that has a great diagnostic chart for vibrations.
https://drive.google.com/file/d/0BzA...dyTFpYNzQ/edit

tomtom52

I was told by the dealer that a coil going bad will cause what feels like a drive line shake or shudder at about 60. How many miles on your truck?

MHOWELL34

A old set of plugs will vibrate like a rumble strip on downshift in about the 60-70 range if it misfires. Happened to me literally as i was driving away from buying the truck, i said oh f#$% no. Put all new plugs in. Got transmission fluid changed just to be sure. Never saw any codes but it went away. They were pretty bad plugs they were stuck in there good, Lisle tool got a workout on all 8!

Martian

Could've sworn I posted on here yesterday... anyway check your parking brake scissor levers. They're well-known to rust into one solid piece and hang up. I had to soak mine in PB Blaster and bang them against my cement stairs with a hammer to turn them back into two pieces and clean them up.

BCMIF150

If your truck had a shudder I might have an idea...but shutters...I have no clue.

edwin108

My truck did the same, but from 70-85 mph. It turned out that both IWEs were bad, causing the front driveshaft to spin all the time. The vibration itself was caused worn u-joints in the front driveshaft.

Coachdent2lw

Had spark plugs replaced at 100,000 miles and have 109,000 on it now. Tried a new IWE Solenoid no fix. And yes it is a shudder problem... Oops