My car vibrates around 3000revs what is the cause of this?

Tiny
DANNIG
  • 1991 MITSUBISHI GALANT

I have been told that it might be the Cambelt.

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Wednesday, July 18th, 2012 AT 2:13 PM

12 Replies

Tiny
ASEMASTER6371
  • EXPERT
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I would look at mounts first. Then make sure the motor is working on all cylinders.

Cambelt? Not really.

Roy

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Wednesday, July 18th, 2012 AT 2:20 PM
Tiny
DANNIG
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The engine mounts? And how would I check the cylinders?
Also I was told that the drive shafts would need realignment

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Wednesday, July 18th, 2012 AT 2:31 PM
Tiny
KHLOW2008
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Which engine do you have?

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Wednesday, July 18th, 2012 AT 3:03 PM
Tiny
DANNIG
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Engine E39A

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Wednesday, July 18th, 2012 AT 3:50 PM
Tiny
KHLOW2008
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Yes, you most probably has a fault with the beltings but not the cam belt. It is the balancer shaft belt that has not been timed correctly.

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Wednesday, July 18th, 2012 AT 4:20 PM
Tiny
DANNIG
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What would be involved with fixing that?
And would that stop the vibrations?

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Wednesday, July 18th, 2012 AT 4:30 PM
Tiny
DANNIG
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And most of all would it be expensive to get done?

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Wednesday, July 18th, 2012 AT 4:33 PM
Tiny
KHLOW2008
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You would need to remove the timing belt to be able to realign the balancer belt. At least the front pulley and timing belt cover has to be removed to check the alignment.

Yes it would stop the vibration if the balancer shaft is not correctly installed. No if the vibration is not caused by this.

It should be a 2 hour job.

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Wednesday, July 18th, 2012 AT 7:53 PM
Tiny
DANNIG
  • MEMBER

Looking back since I have owned the car I thiink that is the problem
just a few more questions I would like to ask is this still free or is it just free for the first question?
Also what country are you in?

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Thursday, July 19th, 2012 AT 2:52 PM
Tiny
KHLOW2008
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All questions are free and donations are always welcome.

This site is international and I am from Malaysia.
Our experts comes from all over the world and if you add up the years of experience, maybe we are talking at least 300.

If you have anything else, you are welcome to continue. If you have anything new, you can always post a new question.

Have a nice day.

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Thursday, July 19th, 2012 AT 6:49 PM
Tiny
DANNIG
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Is the drive shaft alignment the same thing as the balancer shaft belt being out of alignment?

And if the balance belt snaps does that mean that the valves would of broken into the pistons or could there be a chance that it hasnt?

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Tuesday, July 24th, 2012 AT 11:07 AM
Tiny
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No, driveshaft is for the shaft between the wheels and transmission and vibrations is speed related. That is a separate problem from engine vibrations at 3000 rpm.

Balancer belt does not drive the camshaft and would not affect timing if it breaks but it would cause damage as well if it gets into the way of the cam (timing) belt and causes the belt to skip tooth.

This is an inteference engine so if the timing belt breaks, it will bend the valves.

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Tuesday, July 24th, 2012 AT 1:00 PM

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