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vibration at 80 mph, comes and goes

Old 11-13-2015, 05:12 PM
  #141  
travlee
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you have a buddy with a Z? swap driveshafts, see if problem persists... will just cost ya some time and beer
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Old 11-13-2015, 05:23 PM
  #142  
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Originally Posted by travlee View Post
you have a buddy with a Z? swap driveshafts, see if problem persists... will just cost ya some time and beer
new city, no friends

plenty of beer though

Last edited by black38; 11-13-2015 at 05:25 PM.
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Old 11-13-2015, 05:26 PM
  #143  
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post up in regional section, i bet someone would help ya.... and you get to meet new people at same time
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Old 11-14-2015, 09:00 AM
  #144  
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Originally Posted by travlee View Post
post up in regional section, i bet someone would help ya.... and you get to meet new people at same time
i have, something about nashville that is exclusive.
I'm not a big meet kinda guy but i'll probably look for a facebook group.
Hard to let someone swap a driveshaft without knowing them for awhile
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Old 11-15-2015, 06:44 PM
  #145  
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i am really at a loss, I do not want to drop the trans to look at the clutch or the pumpkin...this sucks. Why can none of these shops help...
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Old 11-16-2015, 04:01 AM
  #146  
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Near Nashville? Doug Crawford at Crawfords Z Car Garage:

http://www.yelp.com/biz/crawford-z-c...ce-nashville-2

One of the best.
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Old 11-16-2015, 04:27 AM
  #147  
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Is the wobble EXACTLY the same as it has ever been??
You NEED to have the driveshaft MEASURED...... ( by someone who KNOWS how to use that tool )...
Can you recap everything that has been done or experimented with ?
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Old 11-16-2015, 05:28 PM
  #148  
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Originally Posted by timeltel View Post
Near Nashville? Doug Crawford at Crawfords Z Car Garage:

http://www.yelp.com/biz/crawford-z-c...ce-nashville-2

One of the best.
Right close to nashville. 15 mins or so away

I'd be curious to know why you think he is the best?
He was the second shop that had it and suggested I go get a $200 tire balance.

Originally Posted by Vigman View Post
Is the wobble EXACTLY the same as it has ever been??
You NEED to have the driveshaft MEASURED...... ( by someone who KNOWS how to use that tool )...
Can you recap everything that has been done or experimented with ?
Recap of everything done
- Stock set of wheels and tires tried
- Tires mounted and balanced x4 (wheels tested and were true)
- drive shaft unbolted to check u joints
- Diff bushing replaced
- rear shocks replaced
- Driver side axle replaced
- Car was put on a dyno and while on the dyno it shook like it was on the road. (hence all the rear end work)

I reading other threads with similar shakes and people are saying replacing the compression rod bushing fixed it. It just doesn't make sense on my car as the bushings look good and the dyno run makes me think its in the rear.

I'd like to add that every shop except the very first has had the car for at least 24 hours to diagnose a problem.
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Old 11-16-2015, 06:53 PM
  #149  
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Burn it already. This is getting ridiculous.
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Old 11-17-2015, 04:10 AM
  #150  
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Just checking the U joints visually, is not enough... it must be measured. Failing that, it's just guess work, and FRUSTRATION. Take it to Nissan and let them have a look at it...
Things turning at a high rotational speed only need to be a gram or a thou or 2 to do this.

Has the car ALWAYS done this, since you owned it?
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Old 11-17-2015, 05:39 AM
  #151  
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"I'd be curious to know why you think he is the best?"
Please don't misquote. Wrote "One of the best".

Doug Crawford has specialized in Z's for 35 years.
Might do you good to talk to him & let him know what's been done. He's very accessible.

Other options might be to pick up a $100 driveshaft & a four bolt DIY or make an appointment for diagnostics with Dynosty in Louisville.

Sympathize with your problem & appreciate your goal of keeping your Z in good mechanical form. Good luck!
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Old 11-17-2015, 04:04 PM
  #152  
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Originally Posted by guitman32 View Post
Burn it already. This is getting ridiculous.
I think this answer the best.
I live at 123 main st and will roast marshmallows with you while it burns

Originally Posted by Vigman View Post
Just checking the U joints visually, is not enough... it must be measured. Failing that, it's just guess work, and FRUSTRATION. Take it to Nissan and let them have a look at it...
Things turning at a high rotational speed only need to be a gram or a thou or 2 to do this.

Has the car ALWAYS done this, since you owned it?
Has not always done this or i would've burnt it by now.
4 months and counting.


Originally Posted by timeltel View Post
Doug Crawford has specialized in Z's for 35 years.
Might do you good to talk to him & let him know what's been done. He's very accessible.

Sympathize with your problem & appreciate your goal of keeping your Z in good mechanical form. Good luck!
While i don't doubt he's worked on them for that long. He could not fix my problem. He was the second shop I took it to.
He also had a problem taking it up to 80 mph (he wouldn't do it)
He told me what I would've expected nissan to tell me...live with it.

I guess i will leave it with a shop over thanksgiving and have them pull the driveshaft and get it checked. maybe i'll just part it out and call it a day...semi serious

Last edited by black38; 11-18-2015 at 07:44 PM.
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Old 11-18-2015, 06:16 AM
  #153  
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If you ever need a doctor for a health problem, please let someone else choose one for you.
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Old 11-18-2015, 07:44 PM
  #154  
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anyone else have any ideas?
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Old 02-04-2016, 10:30 AM
  #155  
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Has this been rectified? I have the same issue with my 07 z. I have full camber/toe battle version arms in the rear with new energy diff bushings. Just had an alignment and wheel balancing done. I have the "bouncing up and down" feeling after 20-35ish and the vibrations through the driveline/shifted/seat around 70-85ish. It vibrates even when clutch is pushed in(vibrations increase while under load obviously). Any help is great, thanks!
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Old 10-21-2018, 10:16 PM
  #156  
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I'm in the same boat now too, and have been referring back to this thread in hopes to find a solution to my issue...replaced 2 sets of tires, axles, had run out tests done on rotors, hubs, drive shaft. Replaced differential bushings, trans bushing, and still nothing has been fixed. If anyone here, yes I know how old this post is, has any other advice, I would greatly appreciate it.
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