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Engine shakes at 2000rpm, about 3000rpm and so on.

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Old 08-24-10, 09:58 AM
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smigu
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Default Engine shakes at 2000rpm, about 3000rpm and so on.

When rev the engine to about 2000rpm or drive at a speed and gear the motor is revving at 2000rpm, the engine shakes the car disturbingly. It does it also at a bit below 3000rpm, at about 4000rpm and so on.
At idle and between the specific rpm's, I can't feel nothing wrong with the engine.

The car makes also a weird noise at over 2000rpm:
https://www.clublexus.com/forums/sc-...ion-noise.html (check out my post)

This is my first car with 8 cylinders, I used to own cars with straight four engines before.
So here is a dumb question: Is a cylinder misfiring or not firing at all clearly distinguishable, like with 4 cylinder engines?
I'm thinking also maybe failing motor mounts...
What else could it be?
Old 08-24-10, 01:30 PM
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sc-driver
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If the motor mounts are wearing out, it could be causing some resonance at those rpm's
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