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vibration update on the cuda #2 #126864
09/27/08 02:33 PM
09/27/08 02:33 PM
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Stratford nj
cudadan Offline OP
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well if some of you remember i had a vibration in 3rd gear and 2nd it would go away, well i just had the trans redone with ALL new inside, just the housing was the only thing i reused, then i had the converter sent out and had it all redone. well i get out on the highway today get up to about 80 mph and the vibes are still there. the only thing that wasn't changed was the rear housing and leaf springs. Is there anything else i could look for? its only in 3rd gear. i went over every nut and bolt in the drive tran and all was good as were the motor mounts and tranny mount. all the bushiing in the leaf springs are in great shape too. I am at a total loss here.

Last edited by cudadan; 10/06/08 05:38 PM.
Re: vibration update on the cuda [Re: cudadan] #126865
09/27/08 02:45 PM
09/27/08 02:45 PM
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Bend,OR USA
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Put the car up on jack stands so the weight is on the suspenion and have some one run the car up to the speeds that it vibrates at and see if you can find out what is causing it by looking at the car from underneath. If it doesn't vibrate on the jack stands maybe the vibrations is coming from the front of he car


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Re: vibration update on the cuda [Re: cudadan] #126866
09/27/08 02:47 PM
09/27/08 02:47 PM
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smokinwoody Offline
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didnt you have the drive shaft rebalanced and NEW U joints added?

Re: vibration update on the cuda [Re: smokinwoody] #126867
09/27/08 02:51 PM
09/27/08 02:51 PM
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Norwich CT USA
Defbob Offline
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tire balance or pinion angle

Re: vibration update on the cuda [Re: smokinwoody] #126868
09/27/08 02:52 PM
09/27/08 02:52 PM
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Stratford nj
cudadan Offline OP
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i've tried all of the above.3 new drive shafts, changed pinion angle and ran it on the stands, it has the vibes on the stands but just cant find from where, i've changed tires and wheels, brake drums, center section, yokes,axles. tranny and torque converter. still something is causing the rear u joint to go bad

Post deleted by Defbob [Re: cudadan] #126869
09/27/08 02:58 PM
09/27/08 02:58 PM

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Re: vibration update on the cuda [Re: cudadan] #126870
09/27/08 02:58 PM
09/27/08 02:58 PM
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smokinwoody Offline
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this may sound dumb..

is there enough play in the slip yoke to the tranny where the suspension going up or down that would cause bind in the U joint..

Re: vibration update on the cuda #126871
09/27/08 03:10 PM
09/27/08 03:10 PM
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Stratford nj
cudadan Offline OP
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Quote:

junk the car



LOL i have been known to do that LOl
yeah woody there is enough end play i made sure of that,

Re: vibration update on the cuda [Re: cudadan] #126872
09/27/08 03:16 PM
09/27/08 03:16 PM
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smokinwoody Offline
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my Camaro has a vibration now after I bottomed out on a bump in the road...after that it now has a vibration at certain rpm's..I must have hit the driveshaft ...problem is its one of those MATRIX shafts ...


have you checked the harmonic balancer...or had anything looked at in the engine...

Im thinking you already did all that..

Re: vibration update on the cuda [Re: smokinwoody] #126873
09/27/08 03:19 PM
09/27/08 03:19 PM
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Stratford nj
cudadan Offline OP
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Quote:

my Camaro has a vibration now after I bottomed out on a bump in the road...after that it now has a vibration at certain rpm's..I must have hit the driveshaft ...problem is its one of those MATRIX shafts ...


have you checked the harmonic balancer...or had anything looked at in the engine...

Im thinking you already did all that..



i ahd the stock balancer on it then went to an SFI one and still there, i would think if it was the motor that it would do it all the time, and if it was the motor also i'd think the front u joint would go before the rear.

Re: vibration update on the cuda [Re: cudadan] #126874
09/27/08 03:26 PM
09/27/08 03:26 PM
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not only do I ask dumb questions but I dont read..

rear U joint...pinion yoke?

Re: vibration update on the cuda [Re: smokinwoody] #126875
09/27/08 03:32 PM
09/27/08 03:32 PM
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Stratford nj
cudadan Offline OP
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Quote:

not only do I ask dumb questions but I dont read..

rear U joint...pinion yoke?




LMAO, i tried 2 different yoke, a small one and now i run a 7290 series on it. still the same, this all started when i had the trans redone last winter.thats why i thought it was the trans. but i changed everything in the trans but the housing, i looked over it and no cracks andywhere either

Re: vibration update on the cuda [Re: cudadan] #126876
09/27/08 03:45 PM
09/27/08 03:45 PM

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Guess you do have the correct converter and balancer for a 360 being externally balanced?

Re: vibration update on the cuda #126877
09/27/08 03:48 PM
09/27/08 03:48 PM
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Stratford nj
cudadan Offline OP
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Quote:

Guess you do have the correct converter and balancer for a 360 being externally balanced?



yeah the car has been together for awhile , then this started,

Re: vibration update on the cuda [Re: cudadan] #126878
09/27/08 03:59 PM
09/27/08 03:59 PM
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Arlington, Texas
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bobby66 Offline
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Wheel and axle bearings good?

Re: vibration update on the cuda [Re: bobby66] #126879
09/27/08 04:03 PM
09/27/08 04:03 PM
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Stratford nj
cudadan Offline OP
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Quote:

Wheel and axle bearings good?



changed them all

Re: vibration update on the cuda [Re: cudadan] #126880
09/27/08 04:12 PM
09/27/08 04:12 PM
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Las Vegas
Al_Alguire Offline
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Driveshaft....


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: vibration update on the cuda [Re: cudadan] #126881
09/27/08 04:20 PM
09/27/08 04:20 PM
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Posts: 9,116
Falconer, NY
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I cracked a second tailshaft housing 3 weeks ago. I'm finally ready to go tear it apart tomorrow. What I'm gonna do is drop 3 lines. One from the balancer, 1 from the trans tailshaft and one from the rear pinion yoke. Then gonna check it with a laser level to see where the line runs from front to back. I'm thinking on mine that I may be off side to side with my trans crossmember. Also, did you use a new crush sleeve when you swapped yokes? I didn't on mine and that is another thought I had. Maybe the pinion isn't set correctly creating the vibrations. But I'm not getting any groaning noises.

What I guess I'm asking here is, do you think that with all the times that you've had yours apart, that maybe the tailshaft isn't located exactly where it was before all this started, up/down & side to side ? When was the very time you took it apart for this problem? What was wrong then?



When you decide to quit, THAT is the moment when you would've succeeded..
Re: vibration update on the cuda [Re: cudadan] #126882
09/27/08 04:30 PM
09/27/08 04:30 PM
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usa
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run it on the stands with the tires off. put all the lug nuts on it .have someone turn one of the axles with a dail indicator on the flange watch the run out do the same for the driveshaft u find it.If they check out good it could br a ring gear out of balence.

Re: vibration update on the cuda [Re: hot67cuda] #126883
09/27/08 04:34 PM
09/27/08 04:34 PM
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Stratford nj
cudadan Offline OP
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Quote:

run it on the stands with the tires off. put all the lug nuts on it .have someone turn one of the axles with a dail indicator on the flange watch the run out do the same for the driveshaft u find it.If they check out good it could br a ring gear out of balence.



did that too and all was good. this is the worst problem i ever had

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