Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

Intermittent Violent Engine Shaking


  • Please log in to reply
32 replies to this topic

#26 nipper

nipper

    Semi Elite Master of the

  • Members
  • 17,621 posts
  • Long Island NY

Posted 25 October 2012 - 10:09 AM

Highest centrifigal forces on a roatating part. Dont worry it will start happening more often and getting worse.

#27 JEBalles

JEBalles

    USMB Regular

  • Members
  • PipPipPip
  • 68 posts
  • Carlisle, MA

Posted 25 October 2012 - 08:52 PM

I don't understand though: how could it be the drive shaft if there is no significant torque on it? I can be travelling high speeds without issue, it's dependent on load, which the rear drivetrain is receiving none of.

#28 6 Star

6 Star

    Boxer Nostalgic

  • Members
  • 988 posts
  • South Seattle, WA

Posted 25 October 2012 - 09:40 PM

I don't understand though: how could it be the drive shaft if there is no significant torque on it? I can be travelling high speeds without issue, it's dependent on load, which the rear drivetrain is receiving none of.


When you put load on it that is when it is taking the most stress and shakes.
Your DOJ on the cv axle is split and as far as anyone knows it has been for a long time. It is most likely shot.

Just give the cv axle swap a shot. If it turns out to be something else (unlikely) at least you wont have a torn boot anymore.

#29 JEBalles

JEBalles

    USMB Regular

  • Members
  • PipPipPip
  • 68 posts
  • Carlisle, MA

Posted 26 October 2012 - 11:16 AM

Okay, I think I was getting driveline confused with driveshaft. And yes, I think that sounds reasonable. Should I bother trying to reboot it, or should I just replace it? And is this something I should replace it pairs, or can I just replace one axle at a time (I don't care about time under the knife, I'll only replace both if replacing only one will affect safety or accelerate wear on another part.)

#30 Gloyale

Gloyale

    It's a sickness

  • Members
  • 9,462 posts
  • Corvallis, OR PNW

Posted 26 October 2012 - 11:50 AM

Okay, I think I was getting driveline confused with driveshaft. And yes, I think that sounds reasonable. Should I bother trying to reboot it, or should I just replace it? And is this something I should replace it pairs, or can I just replace one axle at a time (I don't care about time under the knife, I'll only replace both if replacing only one will affect safety or accelerate wear on another part.)


Doing one side on;y is fine. You might want to do wheel bearings and maybe the ball joint on that side too while your in there.

#31 opus

opus

    Subaru Nut

  • Members
  • 735 posts
  • Trout Creek

Posted 27 October 2012 - 05:55 PM

I am going with door #3, rear driveshaft.

#32 kanurys

kanurys

    High Altitude GL

  • Members
  • 690 posts
  • Durango, CO

Posted 12 November 2012 - 09:14 PM

This is very different than a diesel.

I think you have an axle issue.

Shaking under load = CV axle on it's way out


This is exactly what happened to me on a trip. The CV on the trans stub was wobbling around at 80mph. Sometimes it would align and feel smooth, then I'd hit a bump and it would start to shake.

This was on an MWE axle, with 5000 miles on it, btw.

#33 JEBalles

JEBalles

    USMB Regular

  • Members
  • PipPipPip
  • 68 posts
  • Carlisle, MA

Posted 22 November 2012 - 12:52 PM

I'm almost certain it was the axle. I took it out and did six hours of hard street driving and 3 hours of highway cruising in RWD with no vibrations.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users