High Speed vibration issue

[turbodig]

Re: High Speed vibration issue

thats why its been in storage for over two years , i figure i'll try a couple more thing and if that doesnt do it " BYE BYE NOW" , seriously its unsafe bad , you'd think something this bad would be easy to spot. im thinking its gotta be a tire/rim problem. not a whole lot left on my truck that hasnt been checked or replaced.

Not sure what you've tried, but I'd do a few things.

1) Fresh wheel balance by someone who really does good work.

2) Pull front propshaft and test

3) Add shims under the rear trans mount, see if it makes it better or worse.
It might be that the trans mount needs to be shorter.

They make level adapters to check that your T-case output angle is the same as the pinion angle. You can also makeshift an angle measurement, but it's a lot tougher to get accuracy.

You might have a side-side misalignment as well, although that would imply a bend/tweak
someplace. (ie, previous accident damage)

 

[ty166]

Re: High Speed vibration issue

it seems theres a few people that have this same problem, here is a list of what i've tried this far..

1. had tires balanced four times by three diffrent places. no change
2. sent front rims out to have them straightned and refinished , and had two new tires
mounted and balanced. no change
3. replaced both rear u-joint and balanced rear drive shaft. no change
4. rebuilt front end, all new upper and lower ball joints, inner and outer tie rods and sleeves
idler arm, pitman arm , upper and lower control arm bushings, sway bar bushings , front
pair of bilstein shocks. no change
5. removed front shaft and had it rebuilt. no change
6. remover front drive shaft and drove it. no change.
7. changed torque converter (trans guy suggested it was bad). no change

i am in the process of putting stock converter back in , checked front diff bushings and they look fine , rear diff cover off there is no play in center section or pinion.

i had gotten this truck from the original owner who i've known long befor he bought this truck new, only one accident and all it needed to be fixed was a rear bumper cover because it was cracked when it was backed into in a parking lot. he said he never noticed a vibration but he said he hadnt had it over 60mph (he was almost 55 when he bought it new).

 

[jjorgensen52]

Re: High Speed vibration issue

Have you checked cv axles and bearings? I know that my buddy had a vibration problem resulting from a bad bearing... didn't make noise for a long time either.

 

[ty166]

Re: High Speed vibration issue

new i forgot something i did, one front bearing had a slight amount of play in it so i replaced it.... no change. so i swapped it to the other side and also....... NO CHANGE... i cant take it much longer , if i remember correctly it was a fun truck to drive as long as i didnt go over 50mph, its been awhile. steering shaft just popped into my head but im pretty sure i checked that also...

 

[jjorgensen52]

Re: High Speed vibration issue

new i forgot something i did, one front bearing had a slight amount of play in it so i replaced it.... no change. so i swapped it to the other side and also....... NO CHANGE... i cant take it much longer , if i remember correctly it was a fun truck to drive as long as i didnt go over 50mph, its been awhile. steering shaft just popped into my head but im pretty sure i checked that also...

How many miles on the truck? Or did I miss that earlier? The CV axles are balanced, they can get out of true, and also I would check rear bearings as well

 

[ty166]

Re: High Speed vibration issue

sorry , im not tring to jack this thread or nothing. 65,000 miles on my ty. 1/2 shafts i thought about but thats as far as i went in that area. i have the rear diff opened up now , checked carries and pinion for play , nothing noticable there , axle bearings look good also. its odd so many people have this same problem . i figure im going to try diffrent rims, im going to order a set of z06's and if that doesnt fix it i have a funny feeling im going to do bad things to that truck.....lol dont know where else to look. it seems to run great, pulls hard , no vibrations of any type till you hit 60mph , then forget it, by time you hit 85mph hold on , 100mph forget it, your just along for the ride..... the vibration is so bad it goes where ever it wants.

 

[jjorgensen52]

Re: High Speed vibration issue

sorry , im not tring to jack this thread or nothing.

Don't worry about that, I got you started so you're covered :rotf:

I guess the thing I find strangest about this is that it takes so long to kick in... also, you say the truck wanders all over the place when it vibrates... is that a symptom of the vibration making it uncontrollable or does it just wander of it's own accord? I suppose there is a possibility of the rear axle having shifted slighltly... that would produce abnormal tire wear though.... hrrrm

 

[ty166]

Re: High Speed vibration issue

no, i assume the wandering comes from the vibration being so bad it just goes where it wants, im talking the rear veiw mirror is just a blur.. we are talking screw rattling loose and found laying on the carpet under the dash.50-60mph straight as a arrow no hands on the wheel. i got this thing on jack stands now, i dont see anything unusual anywhere.

 

[QUICK STORM]

Re: High Speed vibration issue

are you shure the wheels are true?

 

[ty166]

Re: High Speed vibration issue

when i first got them one had a slight bend in the lip , didnt leak or anything but i sent then to a place in penn. to have them checked and straightened , they said the wheels ran true and the lip was just a cosmetic problem i said to make sure they are true and straighten the lip and recoat them. im assuming they are straight as i also had the quality department at work check them on a cmm .

thanks for all the replys and help guys , just venting and making sure i didnt miss anything helps me deal with this alittle better.i sure its gonna be something so stupid it aint even gonna be funny.

hey jb's red ty sorry if i highjacked your thread here, didnt mean to....

i also noticed by replies that everyone having this problem is running stock rims. i'm really starting to lean towards a rim problem here , or maybe a balance problem. hopefully a set of z06's will fix it.

 

[dalwine250]

Re: High Speed vibration issue

i had a cv shaft clicking so i bought 2 new shafts[not remans] the new left one vibed bad over 60mph.took it back out ,returned it for an other new one ,smooth as silk .for what its worth.
dave

 

[willyson]

Re: High Speed vibration issue

i had a cv shaft clicking so i bought 2 new shafts[not remans] the new left one vibed bad over 60mph.took it back out ,returned it for an other new one ,smooth as silk .for what its worth.
dave

when you mean 'click', you are saying when the wheel turned it clicked every one rotation (i dont know exactly how to ask) kinda like you had a rock in a wheel in a | | area and it popped at every rotation? i had this popping and couldnt figure out what it was, but it finally stopped (maybe shaft went bad?)

 

[dalwine250]

Re: High Speed vibration issue

yes,tight turns,like in a parking lot i could hear the cv clicking.i have changed a few on s series trucks getting close to 100 k miles.wide tires,hp and torque are hard on cv's and front end parts .i changed them on the ty at 77k.not pos. its your problem but i wouldn't be suprized if it is.
dave

 

[ty166]

Re: High Speed vibration issue

i suppose it could be 1/2 shaft problem , actually its the only place i havent thrown money, so maybe ill try there next. i want to get this figured out befor the snow flies here. i seen many 1/2 shafts making noise but never seen one that went out of balance or cause a vibration unless the inner plunge joint was bad. when i rebuilt the front end i did pull the inner boots off to check the plunge joint and didnt see anything unusual. can they be checked for balance ? where did you get new ones ? stealership ? what did they run you $ wise ?

 

[VIPRETR]

Re: High Speed vibration issue

I have this issue as well. The previous owner, a good friend, thought it was the stock rims. I have since run 3 different rim/tire combos (SS, TT2s. and WS6 rims) and had the same problem with them all. I have also replaced all the bushings, etc. in the front. I have not played with the steering yet but I have a ZQ8 box and shaft waiting to go on. I took the propshaft off tonight and took it for a spin, it seemed to get a *little* better. I think the problem, for me, lies in the halfshafts or the front diff. itself.

 

[JB's Red Ty]

Re: High Speed vibration issue

Hey ty166
You are saving me money, so hijack away...I would definitely be throwing money at the same things, if it were not for this discussion...

Keep this going, cuz I am seriously hoping someone on this board has an answer that solves our ails.

 

[jjorgensen52]

Re: High Speed vibration issue

i suppose it could be 1/2 shaft problem , actually its the only place i havent thrown money, so maybe ill try there next. i want to get this figured out befor the snow flies here. i seen many 1/2 shafts making noise but never seen one that went out of balance or cause a vibration unless the inner plunge joint was bad. when i rebuilt the front end i did pull the inner boots off to check the plunge joint and didnt see anything unusual. can they be checked for balance ? where did you get new ones ? stealership ? what did they run you $ wise ?

I think I paid 95 each for new ones at Napa ... although their site says 140.... maybe they were on sale :lol:

 

[ty166]

Re: High Speed vibration issue

Hey ty166


Keep this going, cuz I am seriously hoping someone on this board has an answer that solves our ails.

YEAH.... A GALLON OF GAS AND A MATCH = VIBRATION FIXED.

 

[jjorgensen52]

Re: High Speed vibration issue

I think I paid 95 each for new ones at Napa ... although their site says 140.... maybe they were on sale :lol:

Heck, now that I think about it, just pull the shafts out and drive it ... that way you can check this as the solution without dropping $300

 

[ty166]

Re: High Speed vibration issue

i dont think on the 1/2 shafts you can just pull them and drive it , someone could correct me if im mistaken. but i think the inner part of the shaft they bolt to are only held in by internal snap rings which would allow the to pop out while driving. anyone know if im correct in my thinking here.

hey willyson , any word from waller about your truck ?? your not keeping secrets are you ?? lol................