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Home > Technical (L322) > Idle sppeed

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PicnicSteve

Member Since: 01 Jun 2015
Location: Lincolnshire
Posts: 30

Idle sppeed

Evening everybody , going to Cornwall on Saturday now all of a sudden TD V8 vogue sounds like it is ticking over a little fast.
Can anybody tell me what the correct speed should be..... Hopefully it's me getting a little paranoid

Cheers

27th Aug 2015 4:33pm

stan
Site Moderator

Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 35265

700-750 rpm ... ... - .- -.

Y. O. L. O.
.

27th Aug 2015 4:38pm

PicnicSteve

Member Since: 01 Jun 2015
Location: Lincolnshire
Posts: 30

Many thanks Stan, I'm running at just under 700 so all ok must be me getting twitchy for the 350 mile journey on Saturday morning.feel happy now.

Appreciate your reply

Steve

27th Aug 2015 4:47pm

stan
Site Moderator

Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 35265

... - .- -.

Y. O. L. O.
.

27th Aug 2015 6:14pm

Pvw10

Member Since: 04 Nov 2015
Location: Ledbury
Posts: 315

2014 Range Rover Vogue SE SDV8 Firenze Red

Can you lower this manually or is it a dealer option?

4th Nov 2015 7:47pm

Haylands

Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8190

2014 Range Rover Autobiography SDV8 Loire Blue

It's not adjustable by anyone, it's set by the engine ECU, if it's wrong there is a fault... Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

4th Nov 2015 8:52pm

Pvw10

Member Since: 04 Nov 2015
Location: Ledbury
Posts: 315

Cheers Pete, just purely out of interest
Thanks
Paul

4th Nov 2015 8:55pm

Haylands

Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8190

Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

4th Nov 2015 8:58pm

fisha

Member Since: 25 Sep 2009
Location: Scotland
Posts: 1350

2015 Range Rover Autobiography SDV8 Aruba

You don't really want it to go lower. Each pulse of a cylinder igniting even at idle creates a large pulse of torque down through the engine, (cause the crank will have lost rotation speed between pulses) making it twist and shake. So it will try to twist on its mounts and then return to original position on each pulse. Lowering idle speed to allowing that would vastly increase the vibration.

But if you then have it such that the next cylinder pulse comesquicker or before it can settle back, then it will stabilise on the mounts and be smoother.

Explains why v8s sound and feel smoother than straight 4 blocks, esp at idle. V8 or else ...

4th Nov 2015 10:53pm

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