Sport mode & cruise control

[Dorchester2]

Hello all petrolheads!

Owner's handbook p. 120 (1999) & p. 112 (2003):
Use of 'sport' mode on automatic gearbox vehicles is not recommended when cruise control is selected.

Why? For what technical reason? What might be the issue?

I've used both at the same time on several occasions in the past without the slightest drawback!
So what?

Thanks.

[clf]

Originally Posted by Dorchester2

Hello all petrolheads!

Owner's handbook p. 120 (1999) & p. 112 (2003):
Use of 'sport' mode on automatic gearbox vehicles is not recommended when cruise control is selected.

Why? For what technical reason? What might be the issue?

I've used both at the same time on several occasions in the past without the slightest drawback!
So what?

Thanks.

I may be wrong, but on the technical side, it could it perhaps be due to additional fuel usage (cruise can help improve fuel.economy, plus lock up would not be engaged).

Also a practical issue I could see being an issue (to me at least) would be the extended acceleration could be unsettling. After disengagement of the cc, then the resume function applied.

Sent from my SM-A600FN using Tapatalk

[rovertone]

I find that when in Sport mode (which I rarely use) the box doesn't seem to want to shift into 5th gear, I've always assumed staying in 4th to provide the sharper response which is not what cruise control would be seeking to do, in other words working against each other.
Having said that I do find it strange that when cc is engaged the box changes down on motorway gradients which otherwise wouldn't have been necessary in normal mode.
I suppose into the equation must factored in the gearbox 'memory' which adjusts to individual driving style.

[Dorchester2]

Originally Posted by clf

Also a practical issue I could see being an issue (to me at least) would be the extended acceleration could be unsettling. After disengagement of the cc, then the resume function applied.

Originally Posted by rovertone

I find that when in Sport mode (which I rarely use) the box doesn't seem to want to shift into 5th gear, I've always assumed staying in 4th to provide the sharper response which is not what cruise control would be seeking to do, in other words working against each other.

Thank you both. That makes sense and we can assume that Rover engineers issued a warning for some reason.

But I'll have another try nonetheless because in all my previous tests the problem of the unsettling acceleration in 4th gear aka the unreachable 5th one didn't hurt me. I don't remember noticing it or it's my memory which is likely failing...

[bl52krz]

Why would you want to use cruise control when in sport mode? Defies my logic of using sport mode. Come to think of it, I have never bothered with sport mode.Kick down seems good enough for me.

[Dorchester2]

Originally Posted by bl52krz

Why would you want to use cruise control when in sport mode? Defies my logic of using sport mode. Come to think of it, I have never bothered with sport mode.Kick down seems good enough for me.

At the first glance your remark looks sensible and logical... but... were you living in South West of France and using from time to time to cross the 'Massif Central' you would be aware that two useful and magnificent motorways have rather steep slopes and even several access ramps hard as well. The engine will be more responsive in sport mode and overtaking for example will be made far easier when uphill. Nevertheless cruise control remains an asset for my poor backbone mainly because then both my legs can relax hence avoiding the dreadful sciatica. Driving so I try to get the best of both worlds...

[patrolman pete]

Back in 2001 when I had my first V6 auto. I asked the dealer if there was a fault with the car not changing into top gear when in sport mode. He said it won't change up until around 100 mph ! I don't know how true it is as I've never checked as the fuel consumption was bad enough at legal speeds !

[Dorchester2]

Originally Posted by patrolman pete

Back in 2001 when I had my first V6 auto. I asked the dealer if there was a fault with the car not changing into top gear when in sport mode. He said it won't change up until around 100 mph ! I don't know how true it is as I've never checked as the fuel consumption was bad enough at legal speeds !

Never I had to notice that because never I drove so fast!
However I can certify that even in sport mode you can reach the 5th gear at lower speeds even if you have to wait longer than in normal (eco) mode.
BTW my consumption isn't that bad because I'm using full E85 which costs around 0.63 € / L instead of 1.48 € / L, less than half price... Even E85 asks for 20% more fuel than E10, 100km cost me less than 8 €, i.e. 100 mls cost me around £10.60. Not that bad for a V6...

[rovertone]

Originally Posted by bl52krz

Why would you want to use cruise control when in sport mode? Defies my logic of using sport mode. Come to think of it, I have never bothered with sport mode.Kick down seems good enough for me.

I must confess I had never given kickdown a thought, forgot it even existed so have never used it!! Must give it a try next time I'm out to see if it works. I drive fairly steadily but when I do step on it to overtake I find enough oomph without having to be too heavy with my right foot, the remap no doubt helps.

This now reminds me of my Rover 800 with the KV6 where I frequently used kickdown, that engine was not very torquey at low revs but once you got past 3000 it was wonderfully free revving.
Probably see a bit of black smoke around here tomorrow as I clear some soot out!

[75driver]

I’ve never really understood the draw towards using cruise control.
My right foot has to go somewhere, and I’ve always felt it more comfortable to be on the pedal rather than the floor.🤔
Not that my commutes warrant cruise control anyways.🙄🙄


Sent from my iPhone using Tapatalk