Periodic engine shake/vibration at neutral or park
NEWS
 

  1. Welcome to Honda Odyssey Forum : Odyssey Minivan Forums General discussion forum for Honda Odyssey

    Welcome to Honda Odyssey Forum : Odyssey Minivan Forums - a website dedicated to all things Honda Odyssey.

    You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, Join Honda Odyssey Forum : Odyssey Minivan Forums today!
     
+ Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 15 of 26

Thread: Periodic engine shake/vibration at neutral or park

  1. #1
    Registered User
    Join Date
    Apr 2009
    Location
    Fair Oaks, CA
    Posts
    60

    Periodic engine shake/vibration at neutral or park

    Hello.
    I have noticed periodic engine shake/vibration with my 2001 Odyssey (143k) and I would like to ask for a help. I can only feel the vibration when gear is set at neutral or park position after engine is warmed up. I don't feel at start up. Don't feel if gear is engaged in D or R. I am the original owner and didn't notice this issue until recently.
    When it happens, engine shakes at every 1 second. I can see engine vibrate under the hood. I don't see RPM surging. I told it to my dealer and they also felt the vibration. But they said computer controls engine and they can't even adjust idle speed.

    Because of prior severe vibration problem (which was fixed with rear motor mount replacement), I developed a habit to put parking brake and then shift to neutral whenever I stop at signal. Like I mentioned, I could keep gear at D position and keep my foot on brake pedal. But my feet started bothering recently, so I want to keep the foot off brake pedal during stop.

    Here is a list of problem/maintenance record that may or may not link to the issue.

    105k Replaced front & side motor mount, timing belt & water pump
    125k Replaced transmission
    136k Fixed misfire by replacing #4 ignition coil (I had to drive ~3 miles with 5 cylinders...)
    141k Replaced rear motor mount. This fixed severe vibration problem.
    143k Replaced front & rear struts/shocks

    2 transmission mounts were not replaced yet. According to dealer, those mounts are tougher than other 3 motor mounts and don't think as the cause of the problem.
    I wonder if anyone has suggestion...

    Thanks

  2. Remove Advertisements
    OdyClub.com
    Advertisements
     

  3. #2
    Registered User New Dad New Van's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    5,666
    I would suggest a throttle body and Idle Air Control Valve cleaning and replace the spark plugs with OEM NGKs if not already done so at 105K miles.

    Also check the power steering switch for a bad connection that can cause idle fluctuations.

    Search on any of these words for more info...
    2001 Odyssey LX
    2003 ACURA EL Touring

    UNOFFICIAL 2001 ODYSSEY THREAD: http://www.odyclub.com/forums/showth...664#post384664

  4. #3
    Registered User
    Join Date
    Apr 2009
    Location
    Fair Oaks, CA
    Posts
    60
    Thank you New Dad New Van,

    Spark plugs were replcaed by dealer at 105k, so I believe it's okay.
    I did experience PRM surge just once after start up last week. It happend only once and I haven't seen ever since. Looks like sticky valve is suspicious.
    I will try cleaning the IAC valve soon.

    I will check power steering switch if cleaning IAC valve doesn't help.

    Regards,

  5. #4
    Registered User
    Join Date
    Apr 2009
    Location
    Fair Oaks, CA
    Posts
    60
    Here is an update.

    Before challenging IAC and throttle body cleaning by myself, I just replaced PCV valve.
    I haven't changed it since I had a car. Old PCV valve had oil residue inside, and it made tiny noise when I shake it. And I did "idle learn procedure" described in Service manual after that.

    I wasn't expecting any change, BUT vibration during idling seems to be reduced quite a bit. It's been 1 week after PCV valve change, and often I don't notice it anymore even after warm up.
    I will continue to monitor the vibration though.

    I bought Seaform and ready to challenge clearning anytime just in case.

    P.S.
    While browsing Service manual, I found section on how to adjust idle speed. I can't believe the service manager at dealer said they cannot adjust idle speed.

  6. #5
    Registered User
    Join Date
    Apr 2009
    Location
    Fair Oaks, CA
    Posts
    60
    Hi. Here's another update.

    Well, the cyclic vibration came back before Christmas, so I finally cleaned IAC and throttle body with Seaform last weekend when I did oil change. Cleaning made throttle response amazingly better. (What a difference!)
    It's been just s few days after that, but the cyclic vibration is still present... It still only happen after engine is warmed up...

    One more strange thing I just noticed yesterday. I don't know if it is related to the problem or not. But coolant in the reservior tank is at 1~2 inches above "max" level.
    I don't recall seeing that before... I did flush coolant at 105k, but never add coolant. I don't remember seeing such high level.
    I will open radiator cap before I go home today and check the fluid level...

    I will also check power steering wire next, but my engine is not doing "idle hunting". It's steady ~800 rpm.
    I could try putting Seaform into gas tank next time I fill it up.

    Is there any other suggestion?
    Thanks

  7. #6
    Registered User New Dad New Van's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    5,666
    Add the EGR valve and port cleaning to your list.
    2001 Odyssey LX
    2003 ACURA EL Touring

    UNOFFICIAL 2001 ODYSSEY THREAD: http://www.odyclub.com/forums/showth...664#post384664

  8. #7
    Registered User
    Join Date
    Apr 2009
    Location
    Fair Oaks, CA
    Posts
    60
    Thanks again New Dad New Van.

    I will try EGR valve and port cleaning after checking power steering wire.
    I just had rough start up today 2 times.
    I just wonder, if I should go ahead and replace EGR valve in any case. I remember something about extended warrantee for EGR...
    I used ODB-II scanner that I have, but there is no error code.

    P.S.
    No issue with coolant level. Radiator was full last night with reservoir slightly above "max" level.

    Thanks

  9. #8
    Registered User
    Join Date
    Jul 2004
    Location
    Ottawa, Canada
    Posts
    4,216
    Quote Originally Posted by esuzuki View Post
    ***snip*** Because of prior severe vibration problem (which was fixed with rear motor mount replacement), I developed a habit to put parking brake and then shift to neutral whenever I stop at signal. Like I mentioned, I could keep gear at D position and keep my foot on brake pedal. But my feet started bothering recently, so I want to keep the foot off brake pedal during stop.

    ***snip
    Shifting to N at each stop is adding clutch engage and disengage cycles and so is adding heat and wear. I would apply the parking brake but leave the shifter in D. The parking brake should hold the van just the same. Sorry, this doesn't help the vibration problem - just pointing this out in case you hadn't thought about it already.
    2002 Odyssey EX FG
    Honda hood deflector, mud guards, AC condenser screen mod, Zyml wax, Amsoil EaO20 oil filter, Amsoil synthetic 5W20, Krown rustproofing, block heater (gets cc...cold in Canada in winter!)
    Original transmission at 117,000 miles/189,000 km, Amsoil ATF since 79,000 miles/127,000 km, Honda aux ATF cooler, Magnefine aux ATF filter, 16 ATF drain & fills

  10. #9
    Registered User
    Join Date
    Dec 2008
    Location
    Redmond, WA
    Posts
    413
    Could it possibly be your A/C compressor cycling on that is causing the vibration? Try pressing the button on your HVAC controls to turn the compressor off and see if that makes any difference (it will say "compr off" or something like that in the LCD area (you'd think that I'd remember exactly, but it is my wife's DD and I only drive it on weekends).
    2001 Odyssey EX 175K miles, 70K on the 3rd tranny, now running Dex III ATF with Lubegard Friction Modifier (black bottle)

  11. #10
    Registered User
    Join Date
    Apr 2009
    Location
    Fair Oaks, CA
    Posts
    60
    Quote Originally Posted by davedrivesody View Post
    Shifting to N at each stop is adding clutch engage and disengage cycles and so is adding heat and wear. I would apply the parking brake but leave the shifter in D. The parking brake should hold the van just the same. Sorry, this doesn't help the vibration problem - just pointing this out in case you hadn't thought about it already.
    I've tried parking brake with transmission in D, but I didn't like it. When I release my foot from brake pedal, the van moves a bit. Parking brake is only applied to the rear wheel and front wheel is still trying to move forward. Some day when parking brake start to fail in that situation, van may hit a car in front. (Think I'm paranoid).
    My habit may also come from driving stick shift Civic for many years.

  12. #11
    Registered User
    Join Date
    Apr 2009
    Location
    Fair Oaks, CA
    Posts
    60
    Quote Originally Posted by redmondjp View Post
    Could it possibly be your A/C compressor cycling on that is causing the vibration? Try pressing the button on your HVAC controls to turn the compressor off and see if that makes any difference (it will say "compr off" or something like that in the LCD area (you'd think that I'd remember exactly, but it is my wife's DD and I only drive it on weekends).
    I've already tried but A/C or fan doesn't make any difference...

  13. #12
    Registered User
    Join Date
    Jul 2002
    Location
    MA
    Posts
    1,393
    I have had similar symptoms i.e. very slight periodic vibration (every half a second) and even after new timing belt and new spark plugs, it has not gone away. It has been there for few years. Except me and when pointed out to my mechanic, no body else would notice it.

    One of these days, I am going to put an expensive Snap On scanner on in and see if it can give me misfire count. Who knows, one of the coil could be doing that.

  14. #13
    Registered User mjody's Avatar
    Join Date
    Nov 2006
    Location
    B.C.
    Posts
    2,465
    mine does that too. Monitored teh data, not misfiring, runs great, good mpg, low emissions. I just chalk it up to engine harmonic vibration.

  15. #14
    Registered User
    Join Date
    Jul 2002
    Location
    MA
    Posts
    1,393
    If it were not for those coin standing up on running engine, we probably would not care!

  16. #15
    Registered User
    Join Date
    Apr 2009
    Location
    Fair Oaks, CA
    Posts
    60

    Periodic vibration is reduced significantly!!!

    I finally had chance to do EGR port & valve cleaning. Oh, what a difference it made! Vibration is reduced significantly!!
    I don't feel it 99% of the time. I could feel faint vibration just once in a while if I really pay attention.
    It is negligible!
    Thank you New Dad and New Van!

    I did EGR port cleaning about 2 weeks ago first. When I read TSB for EGR port cleaning, I didn't know why it says to use 8mm drill bit. EGR port on intake manifold looked so small and I wonder how 8mm drill bit would fit.
    After cleaning carbon deposit with Seaform, I saw big hole. It clogged A LOT. I took out EGR valve at the same time, but it didn't look as bad as EGR port, so I didn't do anything. But I ripped off EGR valve gasket, so I had to get new one to fix it.
    Last weekend, I cleaned EGR valve (was not so bad) and it's port. I used 12v battery to open valve while I cleaned it. Valve cycled few times while 12v was supplied. (Not sure why).
    At the end, I reset PCM and did idle learning procedure.


    During this investigation, I noticed different issue with my Odyssey.
    I kept MPG history since June '2010 but I noticed that MPG dropped from 19MPG to 17 MPG on city right after I replaced ignition coil (May 2011)
    I will monitor MPG for a while to see if EGR was the cause or not.

  17. Remove Advertisements
    OdyClub.com
    Advertisements
     

Similar Threads

  1. Engine starts to stutter, shudder, buck, shake, misfire, chug
    By 148bth in forum 2005 - 2010 Odyssey
    Replies: 31
    Last Post: 04-18-2014, 12:43 PM
  2. Check Engine, TCS, Park, idle jumps 1k - 1.5k
    By Rackshaw in forum 1999 - 2004 Odyssey
    Replies: 5
    Last Post: 10-12-2010, 11:57 AM
  3. Wow what a bad engine vibration - '06 EXL
    By ModysseyEXL06 in forum 2005 - 2010 Odyssey
    Replies: 20
    Last Post: 11-12-2007, 05:41 PM
  4. Engine Vibration.
    By M.M in forum Problems and Concerns
    Replies: 3
    Last Post: 02-23-2003, 11:25 PM
  5. Rev limiter in neutral/park?
    By pummal in forum 1999 - 2004 Odyssey
    Replies: 9
    Last Post: 06-26-2002, 11:51 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Powered by vBadvanced CMPS v4.1.2