Engine vibrations at 2000rpm

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Aug 22, 2019 | 02:21 PM

Damian@FI

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Joined: Jul 2009

Posts: 97

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From: VIC

Engine vibrations at 2000rpm

Hey guys,

I'm getting close to half a million kilometres in my LS430 and I want her to see 1 million, so I'm continuing proper maintenance and listening closely for potential issues.

I'm not very into engines so please excuse my lack of knowledge in that area when I say I have noticed an 'unbalanced' rough firing that starts and ends around 1,800-2,200 rpm.
It happens cold and warm, any fuel type, at any point in the life of the oil, summer or winter, AC on or off, in gear or neutral.

What's the likely cause?
Is it normal?
How can it be avoided and is it viable to do so?

View this post on Instagram

I love her.

Thanks

Last edited by Damian@FI; Aug 22, 2019 at 02:24 PM.

Aug 22, 2019 | 02:45 PM

RX469

Pole Position

iTrader: (1)

Joined: Feb 2003

Posts: 2,915

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From: MD

Have you checked the engine mounts?

Aug 25, 2019 | 01:19 AM

Serushio

Driver School Candidate

Joined: Jan 2018

Posts: 8

Likes: 3

From: Malaysia

Possible suspects
1. Mass Airflow Sensor (remove clean/replace if necessary)
2. Fuel pressure pulsation dampers (one or both faulty)

Aug 26, 2019 | 03:40 PM