Vibration in 4x4 only 2018 ram 2500 - Dodge Cummins Diesel Forum
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post #1 of 14 (permalink) Old 11-03-2019, 08:07 PM Thread Starter
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Vibration in 4x4 only 2018 ram 2500

I have a 4" BDS lift vibrations in 4x4 only from front end. thinking its castor adjustment could this be the issue?

I've taken it to the dealership and they say its normal blah blah blah you guys know the routine.

I'm thinking the opinion angle is to steep.

I have an appointment next Saturday with a 4x4 shop hoping someone will take a little initiative and look deeper at the problem.

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post #2 of 14 (permalink) Old 11-03-2019, 08:28 PM
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Any pictures of you cams on the radius arms? Should be turned toward the rear of the truck a mark or two!!

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post #3 of 14 (permalink) Old 11-03-2019, 08:41 PM Thread Starter
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This is all I got till tomorrow
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post #4 of 14 (permalink) Old 11-03-2019, 10:07 PM
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Doubt it’s caster

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post #5 of 14 (permalink) Old 11-03-2019, 10:50 PM
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Doubt itís caster
It could!!!
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2018 Ram 2500 4X4 SLT Bighorn White 4.10 Gears/Carli coils/295 Toyo AT2's /Full Console swop w shifter /Projector Headlights with HID's-LED Highs/ B&W Turnover Ball----
2017 Dodge Ram 2500 4X4 Laramie , 35" Toyo AT's / Center Console Shifter Mod. SOLD---- 2012 Ram 2500 4X4 Crew-Silver- 4:10's / Carli 3" Coils w/35" Toyo AT2's / Ranch Hand Bumper / Center Console Swap w shifter SOLD!!!
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post #6 of 14 (permalink) Old 11-04-2019, 08:51 AM
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Love the image
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post #7 of 14 (permalink) Old 11-05-2019, 10:17 AM
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4" shouldn't be enough to cause front driveline vibes...but these trucks are pretty hit or miss when it comes to lift height and issues from the front driveshaft. Caster would be the easiest/cheapest potential way to fix it. Take a look Thuren's alignment specs...I had driveline vibes on my 6" lift and was doubtful caster would be enough to fix it. Turns out it was...

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post #8 of 14 (permalink) Old 11-05-2019, 11:37 AM
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If the vibration is "harmonic" and humming and it only happens in 4wd then its driveline. I'm going to suspect that your new caster angle is maxing out the double cardan joint on the front driveshaft and the u-joints are objecting to the extreme angle or the bump tabs are touching.

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post #9 of 14 (permalink) Old 11-05-2019, 08:11 PM Thread Starter
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Thanks for all the advice I really hope it's that simple, especially with winter around the corner 4x4 is a necessity and this vibration is driving me nuts. I will keep you guys posted.

I noticed in a video on YouTube that "rambeastproject" posted with his lifted 2500 the angle of the front shaft entering the front axle seems to be on a straighter angle than mine. Which would be castor correct?

This is my first 4x4 all new to me. Just wanna enjoy it without vibration when playing in snow.
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post #10 of 14 (permalink) Old 11-16-2019, 05:04 PM Thread Starter
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UPDATE: just had the truck aligned. Drives perfect set to thuren alignment specs. 0 vibration in 4x4 even on dry pavement at 90 km/hr I have been chasing this vibration for over a year. Happier than a pig in right now.
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post #11 of 14 (permalink) Old 11-16-2019, 09:02 PM
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Quote:
Originally Posted by Ryan2242 View Post
0 vibration in 4x4 even on dry pavement at 90 km/hr I have been chasing this vibration for over a year.
Umm, just curious how you know that there are no vibrations in 4WD at 60 mph, on dry pavement?!?

Maybe it's just me, but I wouldn't drive at 0.6 mph in 4WD on dry pavement.

Maybe if we start telling people that the brain is an app, they will start using it?

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post #12 of 14 (permalink) Old 11-16-2019, 09:07 PM
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Yes, driving dry pavement and 4wd is not good for the transfer case and j-joints. Lots of stress on those parts as 4wd is not the same as all wheel drive.

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