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Auto gearbox and revs holding

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James1974

Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990

2010 Discovery 4 3.0 TDV6 XS Auto Barolo Black

Auto gearbox and revs holding

Is this the caratistics of a auto box
As if I’m driving at say 30mph and let go of the accelerator the revs will hold at 1500 for about 5 seconds then I feel the engine drop before they start to drop
If I’m on a motorway going 70 and let go of the accelerator the revs will stay at 2000 for
And age before dropping just seems like it’s more pressure on the breaks as they seem well hot after a ride out
Thanks peps Disco 3 gone but not forGotten
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20th Jun 2018 8:55 pm

XDAndy

Member Since: 16 Jan 2018
Location: Gibraltar
Posts: 597

2011 Discovery 4 3.0 TDV6 XS Auto Nara Bronze

I’ve not notic3d this. Think I would but I’ll keep an eye out

I have got this, tho, as I’ve been tracking gearbox and revs etc.

X axis is time is seconds I think

Red line is rpm with green the gear; high point is 6th

Click image to enlarge

20th Jun 2018 9:23 pm

James1974

Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990

I’m
Just wondering if it was the crap remap I had done carnt remember if it done this before
Been reading its engine breaking though as or you let go of the accelerator it holds the revs waiting for you to reapply the throttle as in more efficient than if the revs had dropped to 800 Disco 3 gone but not forGotten
Welcome disco 4
Flappy paddles working from gap
Heated steering wheel done
Bluetooth iPod connection done
Xeon lights (facelift) done
Afs retrofit done
Logic 7 retrofit done
Armrest fridge
Facelift rear lights
Retrofit High beam assist done
Genuine 22” Range Rover sport alloys
Retrofit acc (gave up not possible)
retrofit tpms done
Retrofit Range Rover lcd digital dash. Done
Retrofit blind spot assist done

20th Jun 2018 9:26 pm

James1974

Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990

There is two of mine

Click image to enlarge

Disco 3 gone but not forGotten
Welcome disco 4
Flappy paddles working from gap
Heated steering wheel done
Bluetooth iPod connection done
Xeon lights (facelift) done
Afs retrofit done
Logic 7 retrofit done
Armrest fridge
Facelift rear lights
Retrofit High beam assist done
Genuine 22” Range Rover sport alloys
Retrofit acc (gave up not possible)
retrofit tpms done
Retrofit Range Rover lcd digital dash. Done
Retrofit blind spot assist done

20th Jun 2018 9:58 pm

XDAndy

Member Since: 16 Jan 2018
Location: Gibraltar
Posts: 597

Well' changing my screen shot to a similar scale on the X

Click image to enlarge

But then expanding out a bit to match where your gearbox downshifts

Click image to enlarge

So, don’t know. Looks like yours downshifts earlier, as transmission output shaft speed starts to drop earlier,so maybe that’s why engine revs seem to hold.

But, as these are autos, wont the engine revs stay high as the car is at speed / engine braking?

20th Jun 2018 10:56 pm

James1974

Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990

I don’t know

Doing some
More checks

If I’m sitting still in neutral and Rev it revs
Loverly

If I put in neutral and roll forward slightly the revs act different and hold a lot and don’t
Rev the same

Also when sitting still my turbo boost pressure acuator is showing 88%
And is always between 55 and 95 when driving Disco 3 gone but not forGotten
Welcome disco 4
Flappy paddles working from gap
Heated steering wheel done
Bluetooth iPod connection done
Xeon lights (facelift) done
Afs retrofit done
Logic 7 retrofit done
Armrest fridge
Facelift rear lights
Retrofit High beam assist done
Genuine 22” Range Rover sport alloys
Retrofit acc (gave up not possible)
retrofit tpms done
Retrofit Range Rover lcd digital dash. Done
Retrofit blind spot assist done

21st Jun 2018 4:29 pm

XDAndy

Member Since: 16 Jan 2018
Location: Gibraltar
Posts: 597

Oh!

That’s interesting. OT but Any chance you could post a screen shot of your turbo numbers, and tell me which ECU software you got?

I don’t get any values for turbo boost actuator position %, I just get NA. Same with calculated load.

21st Jun 2018 4:50 pm

James1974

Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990

I take a screen shot later mate I did hear that u only get it on euro4 and above which mine is a 2009 58 plate

If u get a chance can u try some thing with the car running and in neutral rev it and should rev fine but if the car is running and rolling
in neutral see what it revs like then as mine is so different once the wheels are moving I have a hill near me so easy to do Disco 3 gone but not forGotten
Welcome disco 4
Flappy paddles working from gap
Heated steering wheel done
Bluetooth iPod connection done
Xeon lights (facelift) done
Afs retrofit done
Logic 7 retrofit done
Armrest fridge
Facelift rear lights
Retrofit High beam assist done
Genuine 22” Range Rover sport alloys
Retrofit acc (gave up not possible)
retrofit tpms done
Retrofit Range Rover lcd digital dash. Done
Retrofit blind spot assist done

21st Jun 2018 4:55 pm

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