euangibson
Member Since: 24 Dec 2010
Location: Borders
Posts: 11027
  
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| Confused my gearbox today... |
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Doing about 75mph,I decided to overtake a slower moving car.As we were approaching an uphill section where the A1 goes from 2 lanes to 1 , I applied a bit more right foot than usual,but certainly not overly aggressive.
Normally the car would drop 1 gear ie 8th to 7th at that speed (1800 rpm).... This time it dropped a few cogs and the revs shot instantly to the red line.
It took a second or 2 before the electronics sorted everything out and changed back up again,at the same time as I eased off......
As I was watching the revs with some concern,while the gearbox electronics tried to sort it out,the wife told me she had seen a large puff of blue exhaust in the wing mirror.
While that doesn't bother me,as I'm sure I just have nice clean cylinders now,I was more concerned that the electronics allowed the engine to aggressively red-line in the first place.
I'm a bit new to automatic gearboxes,and usually pretty mechanically sympathetic,so is kick-down purely determined by torque and rpm ?
I was just wondering if anyone else has experienced this,because tbh,it was a bit concerning at the time...? "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...
Locking rear E-diff
RLD spare wheel protector & sump guard
Extended roof rails
Series 111 mudflaps
Black side tubes,grill and vents
Timed climate remote
Hids4u interior lights
D4 Firenze my2012 HSE
D3 Java 2005 SE manual (sold,sadly,thanks for the memories)
1966 '88 Series 2a....still starts in the morning better than I do...
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 18th Oct 2013 8:03 pm |
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Trackman
Member Since: 16 Apr 2010
Location: Glasgow
Posts: 430
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Euan,
Were you in sports mode or normal "D"
I find it will drop more than 1 gear if you shove it but not found it go straight to red line.
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| 18th Oct 2013 9:32 pm |
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euangibson
Member Since: 24 Dec 2010
Location: Borders
Posts: 11027
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Ian,no was just in normal D......that added to my confusion as the kick-down was very aggressive  "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...
Locking rear E-diff
RLD spare wheel protector & sump guard
Extended roof rails
Series 111 mudflaps
Black side tubes,grill and vents
Timed climate remote
Hids4u interior lights
D4 Firenze my2012 HSE
D3 Java 2005 SE manual (sold,sadly,thanks for the memories)
1966 '88 Series 2a....still starts in the morning better than I do...
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| 19th Oct 2013 10:15 am |
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petersw
Member Since: 17 Nov 2012
Location: Norfolk
Posts: 1135
 
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I have found using the "paddles" to change down I cannot force it to red line Peter
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| 19th Oct 2013 10:22 am |
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Trackman
Member Since: 16 Apr 2010
Location: Glasgow
Posts: 430
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Was overtaking today and I shoved it a bit  Must have dropped 3 gears and went to over 4000 rpm as it worked its way up the gears. Bit difficult to be exact as I was watching the road and getting comments from swimbo and the same time. 
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| 19th Oct 2013 2:30 pm |
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