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
- - - - -

Legacy Exhaust Rattle- Need help


  • Please log in to reply
8 replies to this topic

#1 jrodb1735

jrodb1735

    New User

  • Members
  • Pip
  • 1 posts
  • Morgantown

Posted 12 August 2009 - 07:30 PM

My 2003 Subaru Legacy L (2.5L, 5 speed manual) has been a phenomenal vehicle for me. Acquired it with 35k miles and now has 122k miles.

I am currently experiencing an exhaust rattle. It happens only at 2100 rpm. I viewed the car from underneath while my friend revved it to 2100 rpm and I have isolated the rattle to one specific pipe. The pipe is the passenger side half of the y pipe that comes directly out of the motor. All three of the bolts are snug, and I can't seem to figure out why it is loose.

Has anyone had this issue with their vehicle? I am thinking that I can easily replace that one section of exhaust pipe, but I couldn't easily locate a replacement part. Does anyone have any suggestions? Do I need to replace the whole exhaust system (which is in otherwise good conditon)? Any advice would be greatly appreciated. Thanks!

#2 GeneralDisorder

GeneralDisorder

    Elite Master of the Subaru

  • Members
  • 20,281 posts
  • Portland

Posted 12 August 2009 - 07:33 PM

Remove the y-pipe and isolate the problem. It is likely to be the inner pipe - that section is double-layered, or a heat sheild. Tack weld the offending bits in place and reinstall. Should be a simple fix - no reason to replace it if it's not leaking and is otherwise functioning normally - they are pretty expensive from the dealer - probably $200 to $300 or more.

GD

#3 Olnick

Olnick

    Ol' Subaru Guy

  • Members
  • 2,633 posts
  • Honolulu HI

Posted 13 August 2009 - 12:05 AM

Welcome jrodb1735. Please post your question in the New Generation forum.

#4 Rooster2

Rooster2

    Subaru Master

  • Members
  • 3,717 posts
  • Indianapolis

Posted 13 August 2009 - 11:40 AM

Does the section of the Y pipe have a shroud covering it? If so, I would suspect that a portion of the shroud has come loose, and is vibrating.

I have had this problem on both of my OB Wagons. I had a friend rev the motor up to the rpm that resulted in the rattle sound, then hold that rev so the sound would continue. Then, I crawled under the car and pushed/pulled on the shroud with my gloved hand and a screw driver until I found which portion of the shroud was loose. I cured the problem by hammering in a bolt as a wedge between the pipe and shroud to prevent the shroud from vibrating. Other guys have used a screw type hose clamp over the shroud to stop the vibration.

Hope this info helps!

#5 nipper

nipper

    Semi Elite Master of the

  • Members
  • 17,607 posts
  • Long Island NY

Posted 13 August 2009 - 05:55 PM

Welcome to the land of subarus. Its a heat shiled easily fixed with vice-grips or a large hose clamp.

nipper

#6 GeneralDisorder

GeneralDisorder

    Elite Master of the Subaru

  • Members
  • 20,281 posts
  • Portland

Posted 13 August 2009 - 06:16 PM

Its a heat shiled easily fixed with vice-grips or a large hose clamp.


Sheet metal vibrations - sometimes a well placed blow with a ball-peen hammer will cure it. We had a customer with a pump that made a "strange noise" - the tech listened carefully to it..... went out to the truck and got his ball-peen hammer - smacked the motor fan shround with it one time.... no charge.

GD

#7 Fairtax4me

Fairtax4me

    Su bah roo'n

  • Gold Subscribers
  • 8,939 posts
  • Charlottesburg, VA

Posted 13 August 2009 - 11:28 PM

Sink a couple 3/4" long self tapping sheet metal screws into it at either end and that should cure it.

#8 Lefty

Lefty

    New User

  • Members
  • Pip
  • 9 posts

Posted 14 August 2009 - 01:25 PM

I have the same noice/resonance when the fan kicks in while Parked. It surely sounds like vibrating sheet metal. Any ideas where exectly this could be coming from?

#9 johnceggleston

johnceggleston

    Lite Master of the Subaru

  • Gold Subscribers
  • 6,382 posts
  • Virginia

Posted 14 August 2009 - 04:03 PM

I have the same noice/resonance when the fan kicks in while Parked. It surely sounds like vibrating sheet metal. Any ideas where exectly this could be coming from?




post #10 here, lots of good info , keep it as a reference.

http://www.ultimates...ead.php?t=51554




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users