D4 Cruise Control

**Discophil** · 24th March 2011, 10:59 AM

My 2.7 TDV6 D3 tends to hold ok and drop down when required. What i find annoying is that when i try to resume the cruise control, it seems to think for about 5 secs before it realises it needs to accelerate to maintain its previous speed setting.

**Disco4SE** · 24th March 2011, 03:11 PM

I have had the D4 stuck on its belly a few times. Whether this has moved or altered a sensor underneath.........I don't know.
You would think that with all the electronics on the vehicle, it would be a matter of plugging it into a diagnostic machine and making the appropriate adjustments.
Keen to hear a fix.

Cheers, Craig

**discojools** · 24th March 2011, 03:12 PM

As mentioned by Craig my 2.7 D4's cruise control works so much better (actually excellent) than my 05 D3. My 08 TDV8 RRS is somewhere between the two. However I have noticed that all 3 do run away down hills and it's better to switch the cruise off which I don't understand as you would think that the throttle would be completely off when the speed is over the speed set. Craig, did you tell ULR about your problem last week when it was serviced?

**Disco4SE** · 24th March 2011, 03:47 PM

Originally Posted by discojools

As mentioned by Craig my 2.7 D4's cruise control works so much better (actually excellent) than my 05 D3. My 08 TDV8 RRS is somewhere between the two. However I have noticed that all 3 do run away down hills and it's better to switch the cruise off which I don't understand as you would think that the throttle would be completely off when the speed is over the speed set. Craig, did you tell ULR about your problem last week when it was serviced?

Jools, would you believe I forgot to mention it

I have to go to town tomorrow, so I'll drop in there and sus them out.
Cheers, Craig

**Graeme** · 24th March 2011, 04:59 PM

Originally Posted by discojools

However I have noticed that all 3 do run away down hills and it's better to switch the cruise off which I don't understand as you would think that the throttle would be completely off when the speed is over the speed set.

The instantaneous fuel consumption display on my 3.0 shows that fuel is still being consumed even when grossly overspeed, but shows zero if CC is cancelled and the retardation effect is immediate. It may be programmed this way to attempt a smoother re-application of power once no longer overspeed, but its no excuse. The slowing uphill is easily overcome by upping the set-speed by a notch or 2 (then reduced again before the crest) so its not due to lack of power.

gt_convert · 25th March 2011, 01:06 PM

bbb

**101RRS** · 25th March 2011, 01:43 PM

Originally Posted by Graeme

The instantaneous fuel consumption display on my 3.0 shows that fuel is still being consumed even when grossly overspeed,

As I slight diversion - does anyone know if there is a way to display instantaneous fuel consumption on the D3 system?

Garry

**Bushwanderer** · 25th March 2011, 02:40 PM

Originally Posted by gt_convert

bbb

Hi gt,
Not an enviable start to the forum.

I suggest that you consider the posts more carefully before posting derogatory replies. It reflects more on you than the poster.

Best Wishes,
Peter

**gghaggis** · 25th March 2011, 03:18 PM

Originally Posted by garrycol

As I slight diversion - does anyone know if there is a way to display instantaneous fuel consumption on the D3 system?

Garry

Other than continually resetting the average fuel consumption, I don't think so.

Cheers,

Gordon

**101RRS** · 25th March 2011, 04:36 PM

Originally Posted by gghaggis

Other than continually resetting the average fuel consumption, I don't think so.

Ok - thanks - I thought there might be some hidden setting that allows it to be selected - most other makes trip computers have had that option for years.

Cheers

Garry

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