Video of P38 vibration at idle what are your thoughts

Littelwill · Jun 14, 2015

https://www.youtube.com/watch?v=Yg_hCXF8w6Q

Range Rover p38 vibration at idle" (please youtube should be top of the list)

Ok so there is loads of stuff on here and all over the internet about this type of vibration but nothing on what causes it or how to fix it...

Ive done this Youtube video to show you what mine sounds like and if you lot can come up with some things to try that I havent already done I'm happy to be the guinea pig and I'll have it done...

Vibration sounds like its coming from transfer box and if you push on it the vibration stops/lessons

your thoughts....

Datatek · Jun 14, 2015

Littelwill said:
https://www.youtube.com/watch?v=Yg_hCXF8w6Q

Range Rover p38 vibration at idle" (please youtube should be top of the list)

Ok so there is loads of stuff on here and all over the internet about this type of vibration but nothing on what causes it or how to fix it...

Ive done this Youtube video to show you what mine sounds like and if you lot can come up with some things to try that I havent already done I'm happy to be the guinea pig and I'll have it done...

Vibration sounds like its coming from transfer box and if you push on it the vibration stops/lessons

your thoughts....

Is it a noise or actually vibration? From your Vid it's more sound than vibration, sounds like the old cigarette packet on the bike spokes we did as kids.
The M51 normally vibrates a bit at idle, I'd be looking at heat shields loose, exhaust touching body, engine/gearbox mounts and so on. Basically anything that could vibrate in sympathy with the normal M51 idle even the serpentine belt.

Littelwill · Jun 14, 2015

Thanks for watching Datatek. Its a noise/vibration I guess. Ive replaced the engine and gearbox mounts and its not changes much/at all exhaust doesnt seem to be fouling in any way...

Littelwill · Jun 14, 2015

P.S you mentioned the serpentine belt..?

Littelwill · Jun 14, 2015

https://www.youtube.com/watch?v=Im_bAtTLeqM

This is me under the RR moving the transmission with a bar to replicate the noise please watch... excuse the quality

sassanach · Jun 14, 2015

have you tried working the bar into other components, ie the exhaust? cos it sounds to me like a loose baffle noise.

Datatek · Jun 14, 2015

Littelwill said:
https://www.youtube.com/watch?v=Im_bAtTLeqM

This is me under the RR moving the transmission with a bar to replicate the noise please watch... excuse the quality

Not very clear, but to me that's something touching somewhere that clears when the drive line torque moves the engine/transmission.
Not ****part engine/gearbox mounts by any chance?

Littelwill · Jun 14, 2015

No the mounts for the engine and gearbox are OEM I made sure not to buy the dreaded blue bag!

Datatek · Jun 14, 2015

Littelwill said:
No the mounts for the engine and gearbox are OEM I made sure not to buy the dreaded blue bag!

Exhaust to turbo joint secure?

Littelwill · Jun 14, 2015

I'll go and get a better video of the sound for you to listen to. I agree that it does sound like its touching something when the drive line torque drops but Im stumped as to what....

Datatek · Jun 14, 2015

Littelwill said:
I'll go and get a better video of the sound for you to listen to. I agree that it does sound like its touching something when the drive line torque drops but Im stumped as to what....

I would not bother with another vid, a strong light and time looking around would be more use.

I've even known a brake line to make a noise not unlike that when the mounts broke.

Littelwill · Jun 14, 2015

https://www.youtube.com/watch?v=DPVqDzsQDsc

Ive gone and made one anyway... from my hours of searching Ive not seen anything on this so might be useful to someone in the future.

This vibration is defiantly coming from the transfer box area I went to the front of the gear box where the flex plate is and couldnt hear anything when levering around with my bar.

hope the new vid shows the sound more...

Datatek · Jun 14, 2015

Only thing On the transfer box I could think of is the shift mechanism not fully in Hi or Lo.
Have you tried shifting to low range?

Littelwill · Jun 14, 2015

When shifting to low range it does make the sound during the Hi to Low change over...

Datatek · Jun 14, 2015

Littelwill said:
When shifting to low range it does make the sound during the Hi to Low change over...

But does it affect the noise/vibration when in low range and does low range actually select?

tomcat59alan · Jun 14, 2015

Littelwill said:
When shifting to low range it does make the sound during the Hi to Low change over...

Check the T/box output bearings, do you have any lift in them? With the motor idling, put your bar between the output flanges and the box to see if the noise stops. I have a little vibration which I can stop by lifting the propshafts. Job for the future is to fit my spare t/box.

Littelwill · Jun 14, 2015

Low range works fine I tested it today to make sure. when you slide it across in N the noise doesnt happen. If you select 4,R,3,2,1 the noise is there. Its the same in Hi box D,R,3,2,1 all make the noise breifly when being selected.

Are you thinking this may be the shift linkages?

Datatek · Jun 14, 2015

Littelwill said:
Low range works fine I tested it today to make sure. when you slide it across in N the noise doesnt happen. If you select 4,R,3,2,1 the noise is there. Its the same in Hi box D,R,3,2,1 all make the noise breifly when being selected.

Are you thinking this may be the shift linkages?

Just thinking or things in the transfer box that might make noise.
I still think it's external.

Littelwill · Jun 14, 2015

What is actually above the transfer box that it could be touching?

Datatek · Jun 14, 2015

Littelwill said:
What is actually above the transfer box that it could be touching?

Transmission tunnel & loom.

Video of P38 vibration at idle what are your thoughts

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