Re: Vibration at 45 mph after replacing torsion bars
[Re: ahy]
#1742013
01/30/15 01:23 AM
01/30/15 01:23 AM
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Joined: Jan 2003
Posts: 4,664 Newfoundland
mopar_man
master
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master
Joined: Jan 2003
Posts: 4,664
Newfoundland
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Quote:
As a start in troubleshooting, changing the T bars should not affect the rear. Sounds like the shakes came before wheel/tire replacement. For trouble shooting, as it may be in the rear suggest 1) check rear U joints for slop 2) put the front on ramps and with a helper to turn the wheel, check for slop in front end joints 3) Get it aligned and re-balanced at a good shop. There are not a lot of shops that are good with T bar suspension. A good tech will check tires for out of round at least visually while balancing. 4) Report back.
And there lies the problem . A tire can be perfectly balanced but still be out of round. have tires checked for out of roundness and balance again . check drive shaft and u joints , sometime a bad shock with a little out of balance can seem like a real bad balance issue .
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Re: Vibration at 45 mph after replacing torsion bars
[Re: mopar_man]
#1742014
01/30/15 01:30 AM
01/30/15 01:30 AM
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Joined: Jan 2003
Posts: 2,334 Addison Twp, Mi.
RobG
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,334
Addison Twp, Mi.
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I had a similar issues at around 60MPH. The rear tire tread on my BFGs was separating.
2 new tires in the back and it all went away.
I am not rich...but I get off my ass everyday to make sure I am not broke!
Can we get the Mexican cartels to help us with our supply chain issues? They don't seem to have any trouble getting stuff from one place to another.
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Re: Vibration at 45 mph after replacing torsion bars
[Re: skicker]
#1742017
01/30/15 01:53 AM
01/30/15 01:53 AM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Quote:
I had a vibration in a Dart years ago. A buddy of mine had me unhook the drive shaft and rotate it 180* and hook it back up. It didn't fix it but it reduced it.
????? This is interesting!
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Re: Vibration at 45 mph after replacing torsion bars
[Re: Kern Dog]
#1742018
01/30/15 02:08 AM
01/30/15 02:08 AM
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Joined: Jun 2005
Posts: 6,257 gulfport, ms, west mi
rowin4
master
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master
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
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Jack the car up, put jack stands under the rear end. Start the car, put it in gear and give it some gas. You should be able to see if it is a bent rim, bad tire, or drive shaft problem.
it's ok to butt heads, just don't do it with a butthead
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Re: Vibration at 45 mph after replacing torsion bars
[Re: taboo]
#1742019
01/30/15 02:52 AM
01/30/15 02:52 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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shaft/ujoints/extension housing bushing
live every 24 hour block of time like it's your last day on earth
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Re: Vibration at 45 mph after replacing torsion bars
[Re: taboo]
#1742020
01/30/15 08:27 AM
01/30/15 08:27 AM
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Joined: Nov 2006
Posts: 356 NE
moparpoolman
enthusiast
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enthusiast
Joined: Nov 2006
Posts: 356
NE
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Quote:
Thank you for the quick replies. I should mention that I actually replaced (not changed) all 4 wheels and tires with new and had them balanced. There was no change in the vibration after doing this. I will look in to the other suggestions. Thank you!
You're probably noticing the vibration more after torsion bars installed because the car is stiffer/more rigid. What kind of tires did you put on the car? I've seen many of the repro tires "out of round" and balancing can not fix that. I'd also check the transmission mount.
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Re: Vibration at 45 mph after replacing torsion bars
[Re: azmopar]
#1742023
01/30/15 06:24 PM
01/30/15 06:24 PM
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Joined: Aug 2014
Posts: 45 Delaware
GeorgeH
member
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member
Joined: Aug 2014
Posts: 45
Delaware
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a little too much axle runout can cause a vibration that comes and goes.
Last edited by GeorgeH; 01/30/15 06:25 PM.
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Re: Vibration at 45 mph after replacing torsion bars
[Re: Paul_Fancsali]
#1742025
01/31/15 01:51 AM
01/31/15 01:51 AM
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Joined: Jan 2003
Posts: 5,394 Pikes Peak Country
TC@HP2
master
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master
Joined: Jan 2003
Posts: 5,394
Pikes Peak Country
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Quote:
Did anyone dent the driveshaft ?They did that at the one shop I had my car I had to replace the shaft
As can a driveshaft that is too short.
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Re: Vibration at 45 mph after replacing torsion bars
[Re: rowin4]
#1742026
01/31/15 05:26 AM
01/31/15 05:26 AM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Quote:
Jack the car up, put jack stands under the rear end. Start the car, put it in gear and give it some gas. You should be able to see if it is a bent rim, bad tire, or drive shaft problem.
I did this once when I had a bad vibration in a ONE ton Dodge truck. You'd think the mass of a truck that heavy wouldn't vibrate much. It turns out that one of the FREE tires a buddy gave me was on a seriously bent wheel. I'm talking a wheel that was bent at least 1 1/2 inches! After pulling the wheel, I could clearly see the bend in the center section. I looked at the other three wheels and two others were AFU as well. SOME buddy, huh???
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