Vibration
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New User
Joined: Apr 2001
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From: Chicagoland Area
Vibration
My whole truck vibrates at 70mph +. Here are the things that I had done so far.
Balanced the wheels several times.
Rotate the wheels.
Balance the drive shaft.
New front bearings.
New front rotors.
New upper and lower ball joints.
The vibration seems to be coming from the floor or the whole truck. Its not a steering wheel vib!
Can I take the rear drive shaft off and test drive with just the front drive shaft to eliminate rear section of the truck?
Can it just be the AT tires I have on the truck?
Can I put the rear of the truck on jack stands and run the truck up to 70mph and check for a vib.
John
Balanced the wheels several times.
Rotate the wheels.
Balance the drive shaft.
New front bearings.
New front rotors.
New upper and lower ball joints.
The vibration seems to be coming from the floor or the whole truck. Its not a steering wheel vib!
Can I take the rear drive shaft off and test drive with just the front drive shaft to eliminate rear section of the truck?
Can it just be the AT tires I have on the truck?
Can I put the rear of the truck on jack stands and run the truck up to 70mph and check for a vib.
John
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Re: Vibration
Originally posted by jpatter
[B]Can it just be the AT tires I have on the truck?[B]
[B]Can it just be the AT tires I have on the truck?[B]
Can I put the rear of the truck on jack stands and run the truck up to 70mph and check for a vib.
Elder User
Joined: Oct 2003
Posts: 653
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From: Florida
Don't put it on jackstands and run it to 70 unless you have a really understanding insurance agent. If it vibrates as bad as you say, it'll jump off and run down the street. Take it to a good tire shop and have them put the tires on a lathe and check for round.
Elder User
Joined: Apr 2002
Posts: 671
Likes: 4
From: Elkhart USA
not only could it be your tires are out of round, but it also could be your rims. a good tire shop will spin the rims first, then make the highs and low on the rims match the tires.
second thing
i would check is your carrier bearing.
ive seen even the most expensive rims out of spec. like my welds 1 out of the 4 were to far out to balance. they had to send it back!
good luck
Tony
second thing
i would check is your carrier bearing.
ive seen even the most expensive rims out of spec. like my welds 1 out of the 4 were to far out to balance. they had to send it back!
good luck
Tony
Post Fiend
Joined: Jan 2002
Posts: 5,859
Likes: 7
From: USA
You said you had the driveshaft balanced ,but did you put it back in phase or mark it before taking it out so that it would go back in at the same pos.??????
This can make you pull your hair out to get rid of vibrations.
Rich
This can make you pull your hair out to get rid of vibrations.
Rich
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New User
Joined: Apr 2001
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From: Chicagoland Area
Vibration
I should of told you what kind of truck I have to help out the vibration troubles.
'99 Superduty 7.3 liter 4x4 SC SOF single drive shaft (no carrier bearing) 265 AT GoodYears with stock Lariat aluminum rims,
80,000 miles on truck 25K on the tires: vibrated from day one
I done a search on vibration, but the threads never get resolved.
So most of you are saying is to get the tires rebalance at another dealership other than the Goodyear shop. When I purchased the tires I questioned the amount of weights that was installed on the rims. Two of the tires have close to 8 oz's. I will find another shop to rebalance, its cheaper than buying a new drive shaft.
Yes, I did mark the drive shaft when I took it off to have it balanced. The amount of vibration never changed after having it rebalanced.
Don't get me wrong, I wouldn't trade the vibrating machine for nothing. Its one towing monster!
John
'99 Superduty 7.3 liter 4x4 SC SOF single drive shaft (no carrier bearing) 265 AT GoodYears with stock Lariat aluminum rims,
80,000 miles on truck 25K on the tires: vibrated from day one
I done a search on vibration, but the threads never get resolved.
So most of you are saying is to get the tires rebalance at another dealership other than the Goodyear shop. When I purchased the tires I questioned the amount of weights that was installed on the rims. Two of the tires have close to 8 oz's. I will find another shop to rebalance, its cheaper than buying a new drive shaft.
Yes, I did mark the drive shaft when I took it off to have it balanced. The amount of vibration never changed after having it rebalanced.
Don't get me wrong, I wouldn't trade the vibrating machine for nothing. Its one towing monster!
John
Last edited by jpatter; Oct 28, 2003 at 07:05 PM.
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Re: Vibration
Originally posted by jpatter
I will find another shop to rebalance, its cheaper than buying a new drive shaft.
I will find another shop to rebalance, its cheaper than buying a new drive shaft.
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New User
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Go to www.gsp9700.com. It is a web site where you can locate a dealer that has a Vibration control system. It measures radial runout in your tires and your wheels. It then matches the low spot of the wheel with the high spot of the tire.
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New User
Joined: Apr 2001
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From: Chicagoland Area
Tire Balance
OK, I had my tires balanced with the Road Force machine. Two of my tires were at a measurement of 90 and are not fixable. Don't quote me but I thought the serviceman said that anything under 20 would be acceptable. Its a shame that a guy pays 168 bucks a tire and can't get a premium or quality tire. Goodyear AT's will never go back on my truck again! I only had 20,000 miles on these tires and I complained from day one that something was wrong. I guess I wasn't aggressive enough to get things done right.
John
John
Fleet Mechanic
Joined: Nov 2001
Posts: 1,553
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From: Corpus Christi, TX
From your description, your vibration sounds exactly like the one I've had! Did the same things as you trying to pinpoint the vibration. Heck, two days ago, my dealer went so far as to replace all four of my wheels with brand new ones!! I'm going to go the same route you did and get the tire & wheel combo balanced with a road force balancer. Hope this solves my problems!
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New User
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From: Chicagoland Area
Tires
Munkey.
I'm still waiting for the new tires to arrive. I will let you know when I do. I'm going to try a few more things as well too.
My vib start heavly at 40 mph right after the truck goes into overdrive, its a slow vib and its heavy. Then smoothes out as speed increases, but its still there. Then when the truck hits 70mph the vib comes back but its tight and it makes the whole truck vibrate. Very little in the steering wheel, the center console swing back and forth having a good ole time. The vibration is there under acceleration and deacceleration, so that should eliminate the drive shaft right?
Here is my email, Jpatte5238@aol.com, email me and we'll talk.
John
I'm still waiting for the new tires to arrive. I will let you know when I do. I'm going to try a few more things as well too.
My vib start heavly at 40 mph right after the truck goes into overdrive, its a slow vib and its heavy. Then smoothes out as speed increases, but its still there. Then when the truck hits 70mph the vib comes back but its tight and it makes the whole truck vibrate. Very little in the steering wheel, the center console swing back and forth having a good ole time. The vibration is there under acceleration and deacceleration, so that should eliminate the drive shaft right?
Here is my email, Jpatte5238@aol.com, email me and we'll talk.
John
Senior User
Joined: Nov 2003
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If you are really picky (like I am) you can have the tires trued, this will shave the tire down & make them perfectly round, but depending on how far they have to shave it, the life of the tire can be decreased quite a bit.
Senior User
Joined: May 2002
Posts: 290
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From: Birmingham, Al U.S.A.
As posted above the most likely culprit, based on your description, is not mass imbalance but an eliptical tire or tires. " 8 ounces" is a lot of weight for a new tire. However, your descriptin does not eliminate mechanical loosness. There could be enough force in the tires to excite a resonanance and act as a force multiplier. Try this, if you have a spare tire of another type get it balanced and "trued". Put it on one corner at a time and take a test run. You will find your bad corner fast that way. Good luck.