Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please check the Forum Guidelines at the top of the Newbie section

Pages: [1] 2 3  All   Go Down

Author Topic: Autobox delayed change-up when engine cold  (Read 2963 times)

0 Members and 1 Guest are viewing this topic.

Matchless

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Nottingham
  • Posts: 1560
    • The wife's Mokka
    • View Profile
Autobox delayed change-up when engine cold
« on: 10 August 2006, 09:57:31 »

Does anyone know if this wonderful feature can be disabled?
My street is a fair distance from the main road and has parked cars, school kids, side streets etc so I drive gently along pulling 2700 rpm in first looking like I dont know how to change gear.
I have tried using the snow button which is OK except when I forget to switch it off again once I reach the main road.
There must be a way of knobbling this.
Logged

Admin

  • Administrator
  • *********
  • Offline Offline
  • 0
  • Posts: 2595
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #1 on: 10 August 2006, 10:48:20 »

I think it is probably thermostatically controlled so fooling it should not be too difficult with the correct resistor.

However, the sensor is probably in the gearbox....  :(

I am sure a certain work colleague will know the answer!  :)
Logged
The Administrator.

Matchless

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Nottingham
  • Posts: 1560
    • The wife's Mokka
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #2 on: 10 August 2006, 11:06:43 »

The function is supposed to be to help warm up the cats so that the cats start to clean up the exhaust emissions more quickly following cold start.

I wondered if the engine ecu set a flag derived from coolant temp or commencement of closed loop fuelling or similar to tell the gearbox to revert to normal change points.
I doubt if the 'box ecu makes the decision based on its own temp etc.
Logged

Admin

  • Administrator
  • *********
  • Offline Offline
  • 0
  • Posts: 2595
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #3 on: 10 August 2006, 12:42:55 »

Good point, I forgot it was used to improve the emission controls.  :-[

I guess then it is triggered by close loop fuelling as that would make the most sense... well to me anyway!

I now await a full and detailed explanation from Mark of the "benefits" of this system. :)
Logged
The Administrator.

Matchless

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Nottingham
  • Posts: 1560
    • The wife's Mokka
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #4 on: 10 August 2006, 13:37:39 »

I did ask Mark.......


He didnt know how it worked. :o
Logged

Kev

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Glasgow
  • Posts: 1473
  • .:The OmegaProject:.
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #5 on: 10 August 2006, 14:07:20 »

Quote
I did ask Mark.......


He didnt know how it worked. :o
I find that astonishing!  :o

Are you sure?
Logged
OmegaProject.co.uk .:.  Fuelled with passion...
[img name=signat_img_resize]http://i94.photobucket.com/albums/l92/xthreezero/omegaproject/oof-sig.jpg[/IMG]

Fuse 19

  • Administrator
  • *********
  • Offline Offline
  • Gender: Male
  • West Bridgford
  • Posts: 32269
  • Git!
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #6 on: 10 August 2006, 15:16:36 »

I will study the diagrams....you have to remember that up until recently my only Omega had the optional driver involvement pack (i.e third pedal.... ;D)

Seem to recall a single connection to the auto box.
Logged

Andy B

  • Get A Life!!
  • **********
  • Offline Offline
  • Gender: Male
  • Bury Lancs
  • Posts: 35880
    • R320 TDM850 SmartRoadster
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #7 on: 10 August 2006, 16:53:21 »

Senators do/did this too.
Logged

TheOutcast

  • Guest
Re: Autobox delayed change-up when engine cold
« Reply #8 on: 10 August 2006, 17:46:00 »

Quote
Does anyone know if this wonderful feature can be disabled?
My street is a fair distance from the main road and has parked cars, school kids, side streets etc so I drive gently along pulling 2700 rpm in first looking like I dont know how to change gear.
I have tried using the snow button which is OK except when I forget to switch it off again once I reach the main road.
There must be a way of knobbling this.
Mine changes up after less than 100 yards. If I take my foot off the pedal for a second it seems to encourage it to change up sooner, but that could be just my imagination
The "Snow button" should only work when the air temperature is around freezing. If your's works in the summer, there's something wrong with it.
You could let the engine tick over for a bit longer before you pull away. That's not good for the engine, but it might make the gearbox change up sooner.
Logged

Andy B

  • Get A Life!!
  • **********
  • Offline Offline
  • Gender: Male
  • Bury Lancs
  • Posts: 35880
    • R320 TDM850 SmartRoadster
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #9 on: 10 August 2006, 18:25:18 »

Quote
.....
The "Snow button" should only work when the air temperature is around freezing. If your's works in the summer, there's something wrong with it.
Wrong! It works when you press it starting you off in 3rd gear! Air temp is nothing to do with it.
Logged

Salty

  • Senior Member
  • ****
  • Offline Offline
  • Gender: Male
  • Fleetwood
  • Posts: 516
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #10 on: 10 August 2006, 20:55:38 »

Quote
Quote
.....
The "Snow button" should only work when the air temperature is around freezing. If your's works in the summer, there's something wrong with it.
Wrong! It works when you press it starting you off in 3rd gear! Air temp is nothing to do with it.


I think thats right, just not sure if its third you set off in? You should be able to activate it as long as your doing less than 30mph. I think its supposed to reduce the chance of wheelspin in slippy conditions
Logged

Andy B

  • Get A Life!!
  • **********
  • Offline Offline
  • Gender: Male
  • Bury Lancs
  • Posts: 35880
    • R320 TDM850 SmartRoadster
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #11 on: 10 August 2006, 20:58:45 »

Quote
.......
I think thats right, just not sure if its third you set off in? You should be able to activate it as long as your doing less than 30mph. I think its supposed to reduce the chance of wheelspin in slippy conditions

Definately 3rd you set off in. Reduces wheel spin cos .... you're in third!  ::)
Logged

TheOutcast

  • Guest
Re: Autobox delayed change-up when engine cold
« Reply #12 on: 10 August 2006, 22:33:17 »

Quote
Quote
.....
The "Snow button" should only work when the air temperature is around freezing. If your's works in the summer, there's something wrong with it.
Wrong! It works when you press it starting you off in 3rd gear! Air temp is nothing to do with it.
I stand corrected. [smiley=embarassed.gif]
I've just been out to the car and tried it. You're right it does work.
I'm sure that on my old P Reg, it only worked in low temperatures. Perhaps they changed it, or perhaps I'm wrong about that too.
Logged

TheOutcast

  • Guest
Re: Autobox delayed change-up when engine cold
« Reply #13 on: 10 August 2006, 22:34:30 »

Quote
Quote
Quote
.....
The "Snow button" should only work when the air temperature is around freezing. If your's works in the summer, there's something wrong with it.
Wrong! It works when you press it starting you off in 3rd gear! Air temp is nothing to do with it.
I stand corrected. [smiley=embarassed.gif]
I've just been out to the car and tried it. You're right it does work. According to the handbook it switches off when you reach 80 KPH.
I'm sure that on my old P Reg, it only worked in low temperatures. Perhaps they changed it, or perhaps I'm wrong about that too.
Logged

Kev

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Glasgow
  • Posts: 1473
  • .:The OmegaProject:.
    • View Profile
Re: Autobox delayed change-up when engine cold
« Reply #14 on: 10 August 2006, 22:35:46 »

Quote
Quote
Quote
.....
The "Snow button" should only work when the air temperature is around freezing. If your's works in the summer, there's something wrong with it.
Wrong! It works when you press it starting you off in 3rd gear! Air temp is nothing to do with it.
I stand corrected. [smiley=embarassed.gif]
I've just been out to the car and tried it. You're right it does work.
I'm sure that on my old P Reg, it only worked in low temperatures. Perhaps they changed it, or perhaps I'm wrong about that too.
Don't fret.

It's not like you're an Outcast.  ;)
Logged
OmegaProject.co.uk .:.  Fuelled with passion...
[img name=signat_img_resize]http://i94.photobucket.com/albums/l92/xthreezero/omegaproject/oof-sig.jpg[/IMG]
Pages: [1] 2 3  All   Go Up
 

Page created in 0.114 seconds with 22 queries.