High Speed vibration issue

willyson

willyson

trollin'
Re: High Speed vibration issue

ty166 said:
i had replaced my idler arm with a moog piece when i was searching, i hope it fix's it for you but dont hold your breath.
Click to expand...

im holding... :lol: hopefully it will be it as most of the front end has been replaced
 
mrweelr

mrweelr

New member
Re: High Speed vibration issue

I could never get rid of the vibrations with the stock wheels and tires. Since switching to 18s with new tires, it's smooth as glass all the way to 120mph. Good luck and hope you figure it out.
 
0966Sy

0966Sy

Code what?
Re: High Speed vibration issue

After reading all of your guy's responces i did not here once about victor matching tires. I heard road force machine several times, but no victor matching? So plain and simple.....

not every wheel is perfectly round.....not every tire is perfectly round. You must match the low spot in the wheel casting with the high spot on the tire. A experienced technician will know how to victor match tires. I use a GM roadforce tire balencer at work that is very accurate and will indicate if a wheels out of round is excessive or not. same with tires, it will indicate the heavy spot thus high spot of the tire. first the wheel must pass inspection and a out of round test. I just recently victor matched all 4 of my wheels and tires and found that my front left wheel was bent in two places witch i knew of. well it kept taking out the idler arm and the vibration would get worse. i've replaced the damn idler three times before i was motivated enough to get the root cause fixed. so.... i got the wheel straighned now it passes on the road force machine. but the tire tested bad, it got out of round realy bad do to the rim being out of round. so rather then leave the front two tires 1 bad 1 good on the front to wipe out the idler in the future i just moved them to the back wheels and now i have a minor vibration in the left rear but at least it wont wipe out my idler untill i can afford to replace the tire. Front end vibration is very minor in the front now at 60-65mph but thats because these aluminum stock wheels are not perfect and they bend easy. All mine are not perfect but there passing and the rear tire that is causing the vibration must be replaced. have a tech victor match your tires to your wheels and tell you if your tires and wheels pass on the road force machine. sorry for the grammer im in a hury to leave the house.

If you need further explination of how it's done or what to expect from a dealer pm me and i'll pm you my number and i'd be more then happy to help. this was my problem and is most likely all of yours too.... quit the guessing and fix it right the first time.
 
willyson

willyson

trollin'
Re: High Speed vibration issue

i have a new set of wheels here so i'll get em on and let you guys know. thanks for the help erik :tup:
 
willyson

willyson

trollin'
Re: High Speed vibration issue

mine ended up being the transfer case via a warped driveshaft resonating the entire drivetrain, which resulted in breaking seals in the tc,front diff, tranny, and loosening bolts throughout. the tc eventually took a dump due to fluid level, and this was causing my vibration at 65. it was smooth at speeds below 65 oddly.
 
AutoVation

AutoVation

Member
Re: High Speed vibration issue

willyson said:
mine ended up being the transfer case via a warped driveshaft resonating the entire drivetrain, which resulted in breaking seals in the tc,front diff, tranny, and loosening bolts throughout. the tc eventually took a dump due to fluid level, and this was causing my vibration at 65. it was smooth at speeds below 65 oddly.
Click to expand...

i hate to ask but how much :2cents: did this cost to fix? :(
 
AutoVation

AutoVation

Member
Re: High Speed vibration issue

willyson said:
mine ended up being the transfer case via a warped driveshaft resonating the entire drivetrain, which resulted in breaking seals in the tc,front diff, tranny, and loosening bolts throughout. the tc eventually took a dump due to fluid level, and this was causing my vibration at 65. it was smooth at speeds below 65 oddly.
Click to expand...

FYI, my severe shaking is being caused by the front prop shaft. It was quickly evident when the truck was put up on the lift this morning. :(
 
Syclone#2960

Syclone#2960

What ever it takes!!
Re: High Speed vibration issue

Just wanted to get some updates from those who are still having this issue.

I'm having the same issue in my ty @ 65 mph and up.

Im feeling it in on the steering wheel.

I tried running it without the half shaft.

I replaced the following items.

front diff carrier bushings.
ball joints
tie rods
coil overs
idler/pitman arms
hubs
brake rotors
all four axles
straightened wheels
new bfg kdw2 tires
rebalanced twice (not roadforced)
alingment twice per coliover specs.
replaced ujoints on the rear shaft.
Dropped off the rear shaft for a balance job should have back tomorrow.
installed the wedged lowering blocks with flexaforms.
I installed the same wheels/tires on the sy with no problems upto 105mph.
checked the fluid levels in the transfer case & front diff...replacing with royal purple.
Retorqued all crown nuts with cotter pins.

My final options:
transfer case
front diff rebuild
remove cv axles from sy (Napa HD) to test against the cordones currently installed in the ty.
victor match/road force balance anyway.
gilbert half shaft.
steering stabilizer
hub centric rings
check the pinion angles
 
Last edited:
0966Sy

0966Sy

Code what?
Re: High Speed vibration issue

Two concerns I have when people are describing a vibration, there is a constant vibration felt more severe at certain speeds. There are vibration on acceleration and decelleration. Anything felt during accel and decel and goes away after throttle is held is only going to be a driveline concern, driveshaft, u-joints, pinion angle, ext. NOT wheels/tires

Not everyone given a fancy expensive tire balancer can balance tires, take them to a profeesional not some kid working in a tireshop as a part time job. I roadforce balance my tires when I have had cheap shity tires in the past with a slight flat spot on a wheel or two, It will certainly be felt in the steering wheel. My wheels have now been straighned and i dont buy cheap chinese tires anymore. Had goodluck with Kumho's though.

If your not qualified or educated about driveline, suspension and steering components then dont attempt to repair or replace parts. How the hell would anyone assume that removing the front cv axles would be ok to drive afterwards. This person should not be working on there own vehicles. The damn axle shaft and nut is what allows the load from the wheel to be supported. Nothing but the bearing race is then keeping the hub/wheel attached to the spindle.

I bet 99% of the concern's on the post are owner induced or could have been prevented by having the vehicle serviced and inspected by a qualified individual. I know this post is from 06, but you cant just go replacing parts becuase someone told you too. Your guess is there guess and you will be the only one who looks like a fool in the end.
 
Syclone#2960

Syclone#2960

What ever it takes!!
Re: High Speed vibration issue

Syclone#2960 said:
Just wanted to get some updates from those who are still having this issue.

I'm having the same issue in my ty @ 65 mph and up.

Im feeling it in on the steering wheel.

I tried running it without the half shaft.

I replaced the following items.

front diff carrier bushings.
ball joints
tie rods
coil overs
idler/pitman arms
hubs
brake rotors
all four axles
straightened wheels
new bfg kdw2 tires
rebalanced twice (not roadforced)
alingment twice per coliover specs.
replaced ujoints on the rear shaft.
Dropped off the rear shaft for a balance job should have back tomorrow.
installed the wedged lowering blocks with flexaforms.
I installed the same wheels/tires on the sy with no problems upto 105mph.
checked the fluid levels in the transfer case & front diff...replacing with royal purple.
Retorqued all crown nuts with cotter pins.

My final options:
transfer case
front diff rebuild
remove cv axles from sy (Napa HD) to test against the cordones currently installed in the ty.
victor match/road force balance anyway.
gilbert half shaft.
steering stabilizer
hub centric rings
check the pinion angles
Click to expand...

Im still hunting this issue.
I installed a steering stabilizer shock...no change
then I noticed the pitman arm was loose...still no fix.
Im gunna replace the pitman since it was loose.
 
gringo76

gringo76

New member
Re: High Speed vibration issue

haven't read the whole thread but have you checked pinion angle at rear and trans? every one has diff opinions but basically the center line of the rear end and the center line of the trans need to be at the same plain or angle reguardless of height , or rear down a couple of degrees from trans center line so under throttle the end up the same. if not this could cause a shake, not that its yours but something to check
 
Don W.

Don W.

Stab it and steer it
Re: High Speed vibration issue

beaner76 said:
haven't read the whole thread but have you checked pinion angle at rear and trans? every one has diff opinions but basically the center line of the rear end and the center line of the trans need to be at the same plain or angle reguardless of height , or rear down a couple of degrees from trans center line so under throttle the end up the same. if not this could cause a shake, not that its yours but something to check
Click to expand...

You are on the right track here, and correct for our trucks. The trick, if you want to call it that, is to have each joint angle the same, up or down. Not that you'd ever go "up" in a SyTY. It is done on many other vehicles. Jacked rock crawlers for example. Things can get weird when there are three u-joints. IE two piece driveline. One joint, usually the one at the rear of the trans, will have -0- angle. That front shaft then goes through a support bearing followed by the usual 2 u-joint shaft, with angles, after that. Keep an eye out, there are some weird combo's out there. :roll:

The weird one we do have is our stock from driveline. Two different styles of CV joints at each end. Each angle is different and there is no adjustment. CV joints allow for that.

Cheers.
 
gringo76

gringo76

New member
Re: High Speed vibration issue

Don W. said:
You are on the right track here, and correct for our trucks. The trick, if you want to call it that, is to have each joint angle the same, up or down. Not that you'd ever go "up" in a SyTY. It is done on many other vehicles. Jacked rock crawlers for example. Things can get weird when there are three u-joints. IE two piece driveline. One joint, usually the one at the rear of the trans, will have -0- angle. That front shaft then goes through a support bearing followed by the usual 2 u-joint shaft, with angles, after that. Keep an eye out, there are some weird combo's out there. :roll:

The weird one we do have is our stock from driveline. Two different styles of CV joints at each end. Each angle is different and there is no adjustment. CV joints allow for that.

Cheers.
Click to expand...

ya I got a 4 door long bed dually also that is slammed with a two piece drive shaft, talk about trying to get all the angles correct to get reid of vibrations lol
 
Syclone#2960

Syclone#2960

What ever it takes!!
Re: High Speed vibration issue

I thinks the problem is from the front end since the vibration is felt on the steering wheel and not the seat.
But at this point it would not be a bad idea to check angles.
 
ziembic

ziembic

Donating Member
Re: High Speed vibration issue

One thing I noticed about 1k years ago when my truck was actually on the road was that most wheel balancer's use a cone to mount the wheel to the machine. They way the stock wheels are made, with the "ribs" on the inside, it caused a problem, since the cone would catch a rib, rather than the hub, to make it centered. This may not be your issue, since most don't run stock wheels, but I thought I would add it for future readers.
 
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