Results 1 to 5 of 5

Thread: Vibration-motor mounts or CV joints?

  1. #1
    DX User
    Join Date
    Feb 2005
    Posts
    13

    Vibration-motor mounts or CV joints?

    I am having vibration problems with my 88 lxi w/automatic and 68,000 miles. Soon after purchasing it last year, it developed a vibration when accelerating above 25 mph. After scouring you site, I decided that it was probably the driver side inner cv joint so I replaced the half shaft (along with the passenger side while I had the car up). Almost immediately, the outer joint on the drivers side started clunking though it didn't seem to vibrate. I drove it that way for a couple of months until the clunking got too bad when I replaced it again a couple of weeks ago. Now Iím getting a similar vibration that I had with the original one but with no clunking.

    The counter person at Checker told me that I must have a bad motor mount and that is what is causing the vibration and extreme wear of the cv joints. I did a visual inspection and found that the transmission mount bracket was broken which I replaced yesterday. The car still vibrates!

    My first question is, what is the normal amount of engine movement? While revving the engine against the brakes while in gear, the front mount deforms enough to allow the front of the motor to lift over a Ĺ inch. Is this amount of play normal for this type of mount? Also, when the engine is not running, the torque bar (dog bone) has a lot of side to side play on the engine end . How tight is that bushing supposed to be?

    The other option is that the motor mounts are fine and I have just been unlucky in getting two defective rebuilt half shafts from Checker/Kragen. Has anyone else had problems with Checkers half shafts?

    I would appreciate any ideas or opinions on this problem. Thanks!



  2. #2

    Blkblurr's Avatar
    Join Date
    Jan 2004
    Vehicle
    2004 Pilot EXL-NAV, 2010 Acura TL, 2013 Accord Coupe V6 Nav/Sat
    Location
    Dayton, Ohio
    Posts
    1,259
    It's hard to imagine how the mounts could be broken with only 68,000 miles on the car. Your symptoms do sound like broken mounts though. I have heard of people having cv joint problems like your due to bad cv joints from the parts store and had to replace them several times before getting a good one. My bet is on the engine mounts being bad.

  3. #3
    3Geez Veteran AccordEpicenter's Avatar
    Join Date
    Nov 2002
    Vehicle
    1988 Honda Accord LX-i Turbo 2004 Acura TL 6 speed/navigation
    Location
    Ridin Dirty in New York
    Posts
    7,365
    they rot. You probably have a shredded mount somewhere. When i did my accord, my front mount, timing belt side mount, and dogbone were shredded to pieces. My bottom tranny mount i just replaced because it shredded too
    429whp 362wtq A20 TURBO. A20T>*

  4. #4
    SEi User danronian's Avatar
    Join Date
    Dec 2002
    Vehicle
    1989 Honda Accord Lx-i, 1975 Chevrolet Malibu Classic
    Location
    Boyertown, PA
    Posts
    1,213
    After you replace a worn out engine mount you should torque all of the mounts down in a specific way so the engine seats correctly and so your CV joints don't endure undue stress. THis process is outlined, explained, and pictured in the FREE ONLINE Honda Manual which is downloadable in the sticky in the Tech Section. I would try this route first.
    The dogbone mount on the firewall is usually loose side to side and I replaced mine a few years ago and it didn't help with engine movement at all. A 1/2in, in gear, doesn't sound like too terribly much, but possibly a bit too much. The front and rear mounts are easy to tell whether they are shot, Jack the the engine up from the oil pan, loosen them from the frame rails and if you can make them pivot easily with just your had they are shot. These two are filled with oil and when they spring a leak they just sit there and do nothing except let the engine move all around. Usually the tranny mount makes the biggest difference when replacing them since it does the most at limiting the engine's movement (the bigger the piece of rubber is, the less the engine moves inside the mount). The driver's side mount would most be susceptible to dry-rot since it is just rubber and no oil and it suspends itself inside a metal housing it is attached to. Jack up the engine a bit and see if you can get the engine's weight off the side mount a bit. If you can and you can move the part where the engine attaches inside this mount more than a 1/2" in any direction this mount is probably shot. I don't know how hard this one is to replace since it is actually the only one I didn't have out at one point or another. It will probably be a little difficult b/c just to torque this mount down when I replaced some of my mounts I had some trouble getting to the nuts and bolts.
    75 Malibu for sale, fully restored, $5,500 obo
    http://www.3geez.com/showthread.php?t=43055
    Currently driving a 95 LS soon to be turbo integra.

  5. #5
    DX User
    Join Date
    Feb 2005
    Posts
    11

    tranny rubber mount

    on my 89LXi is dry and shed. Should I replace it immediately or it can wait?
    There is no vibration at the engine. To replace it, unscrew the two bolts on the bracket. Is it correct?
    Thanks.
    Last edited by charlie89LXi; 02-26-2005 at 10:53 AM.

Similar Threads

  1. are these our motor mounts?
    By 88lxi-shortram in forum JDM B18A / B20A Swap Tech
    Replies: 4
    Last Post: 11-04-2010, 10:28 AM
  2. motor mounts/tranny mounts
    By powderkey2 in forum 3geez Accords
    Replies: 10
    Last Post: 09-12-2006, 09:34 AM
  3. Ard Motor Mounts!!!
    By 88tandx in forum General Engine Swaps
    Replies: 17
    Last Post: 05-06-2005, 03:20 PM
  4. Motor mounts?
    By FyreDaug in forum 3geez Accords
    Replies: 8
    Last Post: 03-12-2005, 03:50 PM
  5. Some New Motor Mounts and NOW......
    By NeubJ in forum 3geez Accords
    Replies: 7
    Last Post: 11-12-2003, 10:32 AM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •