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
- - - - -

knocks while driving in straight line


  • Please log in to reply
17 replies to this topic

#1 ontherun987

ontherun987

    USMB Regular

  • Members
  • 134 posts
  • spanaway wa

Posted 15 February 2013 - 06:06 PM

My 1987 gl makes a knock while driving in straight line at about 10-15 MPH, It does sound like it's coming from the right side.It feels like I drove over something. All from CVs look good and I can't find any thing else that looks bad.

I do have a bad ball joint on that side, would that make noise while going straight?

 

Any thoughts ? :)



#2 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 15 February 2013 - 06:21 PM

The suspension?

 

Seriously, though:  Any recent work on suspension, axles, bearings?



#3 MilesFox

MilesFox

    Catch this Fox!

  • Members
  • 10,325 posts
  • Madison/Milwaukee, WI

Posted 15 February 2013 - 06:41 PM

ball joints rattle over bumps and potholes



#4 ontherun987

ontherun987

    USMB Regular

  • Members
  • 134 posts
  • spanaway wa

Posted 15 February 2013 - 06:41 PM

I did the right front cv last year, but other than that no



#5 l75eya

l75eya

    Subaru Nut

  • Members
  • 1,418 posts
  • Hoboken, NJ

Posted 15 February 2013 - 07:08 PM

I'm having a very similar thing happening in my 87 gl 4wd. It's been a coming and going noise that sounds like it's coming from the back right (passenger) side tire. It started about 3 months ago after using the 4wd in the snow.
it's been very non-apparant since then until two days ago when I set out on a 900+ mile round-trip. It was making the noise on the highway (very fast knocking) but then it went away. On the way back from the trip the noise came back and started getting louder until there was finally a loud pop and the car reacted as if I had hit a bump (only in the back) and then there was no noise until about 5 minutes later it did it again with the same bump hit feeling. After that I pulled off and jacked the back up by the diff to look around the rear wheel, but everything back there feels tight.
I'm thinking either a dragging brake shoe that's snagging, or perhaps a bad u-joint or the carrier bearing. I'm going to check that stuff out tomorrow, suggest you might do the same.



#6 ontherun987

ontherun987

    USMB Regular

  • Members
  • 134 posts
  • spanaway wa

Posted 16 February 2013 - 08:04 PM

I looked at my ujoints today they look good, I don't know how to check the carrier bearing.

I drove it today I put it in 4X4 and it felt like the rear end locked up for a few seconds, And I left skid marks in the road.  Something that I forgot to mention is the my car has been siting for months, waiting on tabs.



#7 nipper

nipper

    Semi Elite Master of the

  • Members
  • 17,541 posts
  • Long Island NY

Posted 16 February 2013 - 08:48 PM

U joints. if there is knocing coming from there check it NOW. You do not want to drop a driveshaft at any speed. Very ugly. First look for any freeplay by hand. Rotata the shaft and loof ro any delayed movement in the yokes. Next unbolt the drive shaft and check the universal joints to see if they are seized. This can be a potentially dangerous situation which needs to be investigated.



#8 ontherun987

ontherun987

    USMB Regular

  • Members
  • 134 posts
  • spanaway wa

Posted 19 February 2013 - 03:36 PM

Is it normal for the 4x4 light on the dash to come on when I take off and then go off when I reach cruising speed?



#9 l75eya

l75eya

    Subaru Nut

  • Members
  • 1,418 posts
  • Hoboken, NJ

Posted 19 February 2013 - 03:40 PM

Are you in 4wd or fwd? It's normal for the light to do all sorts of crazy things if it's connection is loose, which yours most probably is.



#10 ontherun987

ontherun987

    USMB Regular

  • Members
  • 134 posts
  • spanaway wa

Posted 19 February 2013 - 05:05 PM

The light comes on when the 4x4 isn't engaged.

 

 

I went and opened up the brakes and found this



#11 nipper

nipper

    Semi Elite Master of the

  • Members
  • 17,541 posts
  • Long Island NY

Posted 19 February 2013 - 05:09 PM

Well that may be an issue ...

 

Looks like ti is time to get new hardware for the drum brakes.



#12 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 19 February 2013 - 05:11 PM

Wow...just...WOW!



#13 l75eya

l75eya

    Subaru Nut

  • Members
  • 1,418 posts
  • Hoboken, NJ

Posted 19 February 2013 - 05:43 PM

I'm going to have to pull my drum off back there and see if it's the same thing. The noise comes and goes so I'm really thinking it's not a u-joint. I did, however, try applying the brakes while the noise was occuring and heard no change, so there's that, too.

Hoping the weather brightens up a bit here soon. I've been putting off a lot of maintainence because it's just been so cold and stormy out lately.



#14 Subruise

Subruise

    Official Party Pooper

  • Members
  • 1,409 posts
  • pierce county

Posted 21 February 2013 - 12:33 AM

I'm going to have to pull my drum off back there and see if it's the same thing. The noise comes and goes so I'm really thinking it's not a u-joint. I did, however, try applying the brakes while the noise was occuring and heard no change, so there's that, too.

Hoping the weather brightens up a bit here soon. I've been putting off a lot of maintainence because it's just been so cold and stormy out lately.

the lack of change you felt when applying the brakes could be attributed to the brakes not being attached to the wheel cylinder and thus, not moving



#15 rdweninger

rdweninger

    USMB Regular

  • Members
  • 411 posts
  • Tillamook, OR

Posted 21 February 2013 - 02:40 PM

Was searching for rear brakes and saw the awesome photo of what they are NOT supposed to look like.  So I'm guessing this thread topic should now be titled "Rear Brake Job".   I have not disassembled the brakes yet, but I'm looking at brake parts on rockauto... there's a bunch of #'s for the size... some in inches... some in mm.  Does anyone know the size of the rear brake shoes.   OP has 4wd... as do I. Does FWD or 4WD have different sizes?  I also want to rebuild the wheel cylinders... and rockauto lists the bore as 5/8" or 3/4" or 1".   Anyone know the wheel cylinder bore?  And of course, the spring/clip set.  4wd shows more/different springs...is that correct?

OntheRun... I don't mean to hijack the thread... maybe just co-pilot ?



#16 ontherun987

ontherun987

    USMB Regular

  • Members
  • 134 posts
  • spanaway wa

Posted 21 February 2013 - 03:46 PM

Was searching for rear brakes and saw the awesome photo of what they are NOT supposed to look like.  So I'm guessing this thread topic should now be titled "Rear Brake Job".   I have not disassembled the brakes yet, but I'm looking at brake parts on rockauto... there's a bunch of #'s for the size... some in inches... some in mm.  Does anyone know the size of the rear brake shoes.   OP has 4wd... as do I. Does FWD or 4WD have different sizes?  I also want to rebuild the wheel cylinders... and rockauto lists the bore as 5/8" or 3/4" or 1".   Anyone know the wheel cylinder bore?  And of course, the spring/clip set.  4wd shows more/different springs...is that correct?

OntheRun... I don't mean to hijack the thread... maybe just co-pilot ?

I don't mind, I like watching little threads grow



#17 rdweninger

rdweninger

    USMB Regular

  • Members
  • 411 posts
  • Tillamook, OR

Posted 21 February 2013 - 06:21 PM

Did you order your brake shoes and spring/clip replacements yet?   I'm heading back to rockauto and will use an '89 GL as my vehicle.  I just read that using an '85 Wagon (EA82) will also give you part #'s for EA81 Brats and Hatchies.  

That same brake situation happened to me a year ago on my other '85 FWD Wagon.   Bad rumbling, grinding and a 'pop' every now and then.   Opened it up and what was left of the springs and clips just fell out.   I bought the parts from Napa because I need them right away.  I should have taken pictures and sent them to the mechanic who had the car for 4 months and test drove the heck out of it.



#18 ontherun987

ontherun987

    USMB Regular

  • Members
  • 134 posts
  • spanaway wa

Posted 21 February 2013 - 07:19 PM

Ordered my shoes from rock auto part #0812529 and the hardware kit from ebay  http://www.ebay.com/...=p2047675.l2644






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users