Question about 1999 Honda Odyssey

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Engine knocking/vibration The engine check light is on. The van starts vibrating when exceeds 50 mph and worser when it is around 65-80 mph. It is not noticeable at speed lower than 50 mph. I have been driving under this condition for several weeks already. Not sure what the problem is.

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  • Anonymous Aug 18, 2008

    same problem engine knocking/vibration and exust smell bad and bad fireing





  • Anonymous Mar 12, 2014

    vibration when driving about 50 mph

  • Anonymous Mar 13, 2014

    check engine light on and wont go pass 50 mph

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A few different things could be causing this, most are internal engine components. First off, take your tires and have them balanced to make sure you didn't accidently fling off a tire weight when you hit a pothole. Next, if that is not it, either you have a blown head gasket, cracked rings, or bad rod/main bearings.

Posted on Aug 05, 2008

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To emininate the engine, does the vibration happen on power braking, without the vehicle moving?

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1996 dodge grand caravan vibration 45 mph to 55 mph replaced right front axel still same problem vibration no felt in steering


Vibrations while driving like you are describing can come from tires that have defects (internally broken belts) (wheel weights that have fallen off) or a bent rim (perhaps from another driver [not you :-) ] hitting a curb) Are the tires worn? Have they been balanced and rotated regularly? You report no vibration in the steering wheel.
Vibrations during braking can be warped rotors or discs (but this doesn't sound like your problem since these kind are usually felt in the steering wheel during braking).
If and only if you feel like you can do this safely,
you can try getting the car up to 55, placing the car in neutral, then switching the "engine off" but leave the "key on" (be warned the power steering will go out but the vehicle can still be steered though the steering wheel will be much stiffer) if you try this (do it perhaps in a vacant parking lot or on an empty road) and the vibration goes away with the engine off but while the vehicle is still moving, then the vibration is engine or transmission related. If this is the case you might hope for maybe a bad engine mount. Bad engine mounts can be diagnosed with the vehicle stopped as well. However, if the vibration remains with the van moving forward but with the engine off, the vibration is likely a problem with the tires or suspension. Try to provide some more info.
If you don't feel comfortable trying the above suggestion, please take the vehicle in to an ASE certified suspension and steering professional for further diagnosis.

Finally, I had a similar situation happen to me today. I was riding with a friend in their van and the vehicle started vibrating more and more around 55 mph. We stopped and carefully checked the front tires (including the lug nuts for tightness) but
found a tire defect. (it had several broken steel belts that caused a bulge in the tire and thus the vibration) We changed the tire and the vibration was gone. Good luck to you.

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