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lewis Posted on Mar 27, 2015
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Engine vibration at 2100 rpm and 3100 rpm (over 80 mph)

1 Answer

Vernon Taylor

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  • Mitsubishi Master 7,446 Answers
  • Posted on Mar 29, 2015
 Vernon Taylor
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If the engine is vibrating it will be felt when the revolutions are raised when the vehicle is stationary.

Few engines vibrate in these modern times in the way lots of engines used to do because automatic machinery during production balances to quite a high degree without being subject to the sort of distractions humans suffer.
It is during repair work later that most vibrations begin when someone makes a mistake and fits an odd clutch bolt or even an odd washer that is lighter or heavier than the others or if the engine has had overhaul work and mismatched parts have been fitted or the balance shaft, if it has one, has been mistimed.

If the vibration is not detectable while the vehicle is stationary it is probably originating from elsewhere.

1 Related Answer

Anonymous

  • 198 Answers
  • Posted on Oct 20, 2010

SOURCE: 2002 rpm goes up to

Sounds like the clutch, if a standard trans, needs to the be replaced. If it's an automatic, you need to take it in for diagnosis. Your trans. might be going bad, slipping, may just be low on fluid, if it is use some Lucas trans nonslpi and the proper tranny fluid to fill it to the proper level. Add the fluids and test drive bfore going to the shop, unless the tranny is fuul allready.

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Vibration at 2100 rpm

It is probably your Motor Mounts. They attach the engine in 4 places to the frame of the car. When the rubber wears out, it will cause excessive veibration.

Take it to your mechanic and tell him to check the motor mounts. For the front and side three mounts, it will probably run about $550 with the parts, im guessing.
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