Cruise Control behaviour
Moderator: RichardW
Cruise Control behaviour
Hi,
I was recently going down a steep hill on a dual carriage way with the cruise control set to 75mph...
It keeps to 75mph really well on the straights and up the hills too, it will accelarate up a hill and you can feel the throttle pedal move up and down as it speeds up and it may even change gear itself (being a V6 auto).
But going down this hill it kept to 75mph where a manual car would accelerate if the throttle was steady, it felt as if the car was braking by itself too.... surely this isn't possible?
Or was it the engine braking as it came off the throttle, it was enough to move me forward in my seat. The brilliant part is, it didn't once go over or under 75mph more than 2mph+/-.
Maybe the braking felt was due to the disconnection of torque from the engine?
Deian
I was recently going down a steep hill on a dual carriage way with the cruise control set to 75mph...
It keeps to 75mph really well on the straights and up the hills too, it will accelarate up a hill and you can feel the throttle pedal move up and down as it speeds up and it may even change gear itself (being a V6 auto).
But going down this hill it kept to 75mph where a manual car would accelerate if the throttle was steady, it felt as if the car was braking by itself too.... surely this isn't possible?
Or was it the engine braking as it came off the throttle, it was enough to move me forward in my seat. The brilliant part is, it didn't once go over or under 75mph more than 2mph+/-.
Maybe the braking felt was due to the disconnection of torque from the engine?
Deian
- xantia_v6
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I think it is just psychological. Your subconcious expects the car to slow down uphill and speed up downhill.
There is a road near here with a sharp uphill then downhill then uphill then downhill spaced over a few hundred metres. With the cruise control on it feels like you are sitting at the front of a rollercoaster, acelerating on the uphills and decelerating on the downhills.
There is a road near here with a sharp uphill then downhill then uphill then downhill spaced over a few hundred metres. With the cruise control on it feels like you are sitting at the front of a rollercoaster, acelerating on the uphills and decelerating on the downhills.
I tried the cruise control on my Accord once! It scared the heck out of me!! It does exactly what it sez on the box, but it's as if you are a passenger sitting in the wrong seat!! lol.. I haven't used it since..
I like being in total control when driving.. heh heh..
.
I like being in total control when driving.. heh heh..
.
James. (Nr M67 East of Manchester).
Dark Blue ZX 1.9D Auto 1994 'L' 5 dr (modified) Aura. 98K miles used daily. Ave mpg 40
Wedgewood Blue 75 CTD auto Connoissaur. 2002. 144k. used daily. ave mpg 40 ish.
Dark Blue ZX 1.9D Auto 1994 'L' 5 dr (modified) Aura. 98K miles used daily. Ave mpg 40
Wedgewood Blue 75 CTD auto Connoissaur. 2002. 144k. used daily. ave mpg 40 ish.
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One of the features of this autobox is that it provides engine braking when slowing down just like a manual box.. whether in CC or not. This is a fantastic autobox in my opinion and one that is a joy to use.
Ian
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Account Ref: 6419
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You'll not be liking this much then!! http://www.youtube.com/watch?v=U88UlyjM4PcJames.UK wrote:I tried the cruise control on my Accord once! It scared the heck out of me!! It does exactly what it sez on the box, but it's as if you are a passenger sitting in the wrong seat!! lol.. I haven't used it since..
I like being in total control when driving.. heh heh..
.
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Heh, I can imagine the Citroen version now, 70MPH in the fast lane, Oh No Anti-Pollution fault, and suddenly its given you back the wheel and you can't go more than 30MPH.rossnunn wrote:
You'll not be liking this much then!! http://www.youtube.com/watch?v=U88UlyjM4Pc
C5 III Tourer 2.0 HDi 163 Auto Exclusive
Gone cars.
C5 2.2 HDi Exclusive Estate auto 57. Awesome car. Sadly Could not be fixed by Citroen.
C5 1.6 HDi VTR Estate 56. Traded in.
C5 2.2 HDi SX Estate 02. Drowned in the floods of 09.
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Saxo 1.1 East Coast.
Gone cars.
C5 2.2 HDi Exclusive Estate auto 57. Awesome car. Sadly Could not be fixed by Citroen.
C5 1.6 HDi VTR Estate 56. Traded in.
C5 2.2 HDi SX Estate 02. Drowned in the floods of 09.
C3 1.4 HDi 92 SX 52.
Saxo 1.1 East Coast.
Driving cruise control needs to be learnt, and is only REALLY effective when coupled to an Auto box. On the European roads away from traffic jams, it is regal, as one can drive and move your legs around on long journeys - using the hand controls only - a bit like a handicapped control system at first.
Horses for courses, but you need to persevere - a bit like learning left foot braking, which is the correct way to drive Auto.
Horses for courses, but you need to persevere - a bit like learning left foot braking, which is the correct way to drive Auto.
I tried the cruise control on my Accord once! It scared the heck out of me!! It does exactly what it sez on the box, but it's as if you are a passenger sitting in the wrong seat!! lol.. I haven't used it since..
R.I.P. January 2010.
XM 2.1 auto VSX 1996 - Bosch Inj, Xantia HDi 90 estate 1999, Xantia 1.9TD 1997
Previously...
GS 1970, Dyane 1974, Xantia 94 VSX TD, XM 94, 2.1 auto - Lucas Inj, XM 92 2.1 estate - Lucas Inj
XM 2.1 auto VSX 1996 - Bosch Inj, Xantia HDi 90 estate 1999, Xantia 1.9TD 1997
Previously...
GS 1970, Dyane 1974, Xantia 94 VSX TD, XM 94, 2.1 auto - Lucas Inj, XM 92 2.1 estate - Lucas Inj
As a matter of interest (and assuming 2 properly functioning limbs) why would you want to left foot brake?
The official guide published by the Department of Transport (or whatever it is this week) recommends that the right foot is used except for maneuvering at low speed. Having had automatics in the past I can't really even see the point in that if the vehicle is functioning properly.
The official guide published by the Department of Transport (or whatever it is this week) recommends that the right foot is used except for maneuvering at low speed. Having had automatics in the past I can't really even see the point in that if the vehicle is functioning properly.
jeremy
It's a technique in racing to brake with ur left foot, and thats all i know.
When I first got into the V6 when buying it I automatically braked with my right foot because i drive a forklift at work.
So after re-programming myself to brake with the left foot again, it was all fun and games on the forklift the next time.
When I first got into the V6 when buying it I automatically braked with my right foot because i drive a forklift at work.
So after re-programming myself to brake with the left foot again, it was all fun and games on the forklift the next time.
Forklifts are more fun with 3 pedals, when the left one operates reverse!
Having done a nosedive when I went to change gear on an automatic and tried to use the brake as a clutch with my left foot I make a point when I drive the things of planting my left foot well out of the way and leave it there!
Having done a nosedive when I went to change gear on an automatic and tried to use the brake as a clutch with my left foot I make a point when I drive the things of planting my left foot well out of the way and leave it there!
jeremy
I wonder what happens if you press forwards and reverse at the same time on one of them?
We have three pedals too... two are the brakes, it's more car like really, the proper brake is in the middle like cars, and the one on the left just disconnects the gearbox so you can lift up the heavy stuff while driving without driving into anything else, pressing it more will push the brake.
We have three pedals too... two are the brakes, it's more car like really, the proper brake is in the middle like cars, and the one on the left just disconnects the gearbox so you can lift up the heavy stuff while driving without driving into anything else, pressing it more will push the brake.