Mine had a significant vibration resonance triggered by coarse-treaded tyres although probably not your noise as from a slightly different area, being somewhere around the driver's foot-well. The cause was a misplaced spacer clip for the brake pipes emanating from the ABS modulator allowing the pipes to vibrate together, only discovered after replacing the wheel bearing without any improvement.

this is only on idle or increase of revs to around 1000rpm when it gets even worse, again when not moving Graeme...
my son checked all bits underneath when up on a ramp..

Mine's vibration only occurred whilst moving because that was when the tyres caused panels to vibrate. My thought was that the engine vibration could be causing something else to reverberate so worth checking that the pipes are properly spread by the (IIRC) 2 plastic clips, but perhaps some other pipes might be vibrating. The pipes from the ABS modulator are obscured below the transfer case ecu so can easily be overlooked.

we checked the pipes and they were ok Graeme , the consensus now is its somehow related to the engine as the engine block is vibrating/buzzing..

Stan what happens above 1000 rpm also is this in neutral or in d but not moving?

Could it be viscous fan related or something in the torque converter? 2004 4.4V8 Vogue
BMW 330CD
BMW523i
Escort Mexico MK1
1974 airportable series 3

Can you hear the vibration under the car? There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

Idea.....

The drivers side of the trans tunnel is where the module for the steps is "wedged" if the fitters didn't fit the foam round it it could be rattling under the trim. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

@sandy, over 1000rpm it disappears whether in neutral or drive...

@dave , not sure if it could be those, it only appeared after the turbo drain mod and the steps being fitted and i'm sure the fan or TC was touched..


@mark, my son checked underneath and it wasnt apparent there , but i will double check again.....

strangely when i fitted some replacement xenon bulbs the other day , i touched the top of the engine and the vibration was prominent , it felt like the engine was running a bit to fast. like it was on choke, but the rev counter says around 700rpm..

does anyone know if the idle can be adjusted ?

possible from altering the engine map, but no aware of anything that could be done from otherwise. Regards
Mark

2012 Westminster
GONE - 2007 Java Black FF Vogue, with Ivory interior

no screw to turn then Mark....

 Regards
Mark

2012 Westminster
GONE - 2007 Java Black FF Vogue, with Ivory interior

stan wrote:

no screw to turn then Mark....

Ah, those were the days.........adjusting the mixture and idle screws
. 2017 4.4 SDV8 Autobiography
2012 4.4 TDV8 Westminster - Gone, but not forgotten

Assuming that you haven't been to the Ann Summers Shop, , You're complaining of a buzzing or is it a vibration?

Buzzing... are there any return springs on your part time steps?

Vibration.. if the engine is feeling lumpy, could it be an injector fault? Only I was convinced that my TCC was going again last year, right up until the injectors went and effectively gave me a ffrr with a freelander TD4 engine below 2000 RPM When it all gave out totally it was obvious that it was an injector... but for the 6 months leading up to the failure I thought it was my TCC.. one thing I did find was the higher the engine revs the more 'normal' it felt

Failing that can you turn the Radio up  Yesterday I couldn't spell Engineer... Today I are one!
Inventor of the 'Guide-o-Matic automatic wheel alignment tool'
Former long term L322 owner, Up/Down graded to a Classic Tractor!