 | Home > Puma (Tdci) > Daft Question, But... |
 
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324  
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Did you actually stop moving? These things work on differences in wheel speed and it's possible that the difference between the spinning one and the others wasn't great enough to kick the system into life. IME these TC systems need a 'determined' throttle to provoke them. Darren
110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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28th Nov 2012 4:11pm |
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| pumaxs Member Since: 18 Jul 2012 Location: Bath Posts: 180 
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I was stationary with the wheel spinning - Waiting for the 'magic' to begin!!
I do realise that there might not have been any grip to find - It would just have been nice if it'd had a look!! '57 Defender 110 XS Station Wagon 2.4tdci |
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28th Nov 2012 4:16pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8094  
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how many wheels were spinning?
did you maintain or increase throttle position vehicle speed on the speedo? Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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28th Nov 2012 4:35pm |
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| pumaxs Member Since: 18 Jul 2012 Location: Bath Posts: 180
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NSF definitely spinning. OSF & OSR not spinning - as stuck head out of window! NSR pretty sure not spinning. Didn't think to look at speedo. I can repeat the experiment & get an outside observer to view all wheels '57 Defender 110 XS Station Wagon 2.4tdci |
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28th Nov 2012 4:42pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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Hmm, ok. There's no way you could be stationary with diff-lock engaged and only one wheel spinning, but even so I would have expected the TC to do something in that situation. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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28th Nov 2012 4:58pm |
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| pumaxs Member Since: 18 Jul 2012 Location: Bath Posts: 180
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Right, I will repeat the experiment in the light with an observer to confirm what is happening on each corner! In any case, I was expecting something to be happening underneath. I was (deliberately) put in a cross axle situation, at one of the Land Rover Experience Centres (in a 2012 Defender 110), and the noise created as the TC (?) resolved the situation was pretty noticeable. Anyway, I'll shut up for now. '57 Defender 110 XS Station Wagon 2.4tdci |
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28th Nov 2012 5:18pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8094
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if difflock is in, one of the front and one of the rears will btoh be spinning.
i dont think ETC works below 8kph (of wheel not road speed) although i would have to check this. if you accelerate to increase the speed of the spinning wheel(s) the ETC will work more effectively as it will react quicker to the greater wheel speed differentiations. Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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28th Nov 2012 8:48pm |
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| Glynparry25 Member Since: 16 Feb 2009 Location: Miserable Midlands Posts: 3015  
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OK,
When you lost traction and spinning did the light (TC) illuminate on the dash? Aslo, when you say you kept on the accelerator- did you ease off at all? I find that on mine if the wheels are spinning too fast it won't engage the TC........ Which is good as if your 'spinning' wheel is doing about 20mph and the brake is applied to that wheel and your 'non-spinning' wheel has good grip you could say good by to either your diff or half shaft. When losing traction, ease off the accelerator and see what happens. I think the TC has a top speed limit too (Differetion speed between wheels). I knew mine was working 100% when in the snow I put it in low 1st and let it go (about 2-3' snow drifts). On tickover (Anti-stall) I was able to get out and watch the truck slowly creep forward as it moved the power around the wheels. Regards, Glyn   |
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29th Nov 2012 10:43am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8094
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or caliper bolts! dont ask! that was with the siemens system though not Bosch which i think is far superior. Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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30th Nov 2012 5:08pm |
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| Glynparry25 Member Since: 16 Feb 2009 Location: Miserable Midlands Posts: 3015
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 I have to ask.... WTF happened?
Glyn |
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1st Dec 2012 2:14pm |
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| pumaxs Member Since: 18 Jul 2012 Location: Bath Posts: 180
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Was in MJ Fews service dept last week about another matter, and mentioned that I didn't think the traction control was working properly + asked a few questions about its workings.
The technician reiterated the previous advice given, that any fault in the system would cause the ABS + TC dash lights to permanently illuminate, but that he would plug in the diagnostics & take a look. Anyway, ten minute later he appears smiling & says that diagnostics are throwing up a fault code on a rear abs sensor failure. So, it is possible to have a braking fault lurking in the system & not be made aware of it. I will test TC again when the sensor has been replaced. '57 Defender 110 XS Station Wagon 2.4tdci |
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17th Dec 2012 4:16pm |
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| pumaxs Member Since: 18 Jul 2012 Location: Bath Posts: 180
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Was in MJ Fews service dept last week about another matter, and mentioned that I didn't think the traction control was working properly + asked a few questions about its workings.
The technician reiterated the previous advice given, that any fault in the system would cause the ABS + TC dash lights to permanently illuminate, but that he would plug in the diagnostics & take a look. Anyway, ten minute later he appears smiling & says that diagnostics are throwing up a fault code on a rear abs sensor failure. So, it is possible to have a braking fault lurking in the system & not be made aware of it. I will test TC again when the sensor has been replaced. '57 Defender 110 XS Station Wagon 2.4tdci |
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17th Dec 2012 4:16pm |
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| limbrickh Member Since: 05 Oct 2012 Location: Canterbury Posts: 20  
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I just had my 2012 2.2 Puma (equivalent to XS spec with TC and ABS) on a steep sandy boat ramp (with a boat on the back). The rear wheels were on hard sand and the front wheels were on a wooden boat ramp with scattered loose sand coating it.
With low range engaged (no centre diff lock) the Defender just sat there spinning both its front wheels. No power was going to the back wheels. Knowing that TC needs revs to operate, I increased the throttle till smoke was coming from the front wheels - still no movement from the rear wheels. I engaged the centre diff lock and the Defender went straight up the ramp with no wheel spin at all. Does TC only work within an axle and not between the front and rear axles? If so, no wonder they added the centre diff lock to the later Disco Series 2s - or is there a fault with mine? Recently I have noticed that it does seem too ready to spin its front wheels on steep hills. Thanks Hamish |
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2nd Jan 2013 8:45am |
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| limbrickh Member Since: 05 Oct 2012 Location: Canterbury Posts: 20
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I forgot to say that the TC light was illuminated on my dashboard when the 2 front wheels were spinning.
I didn't notice the speed on the speedo but the front wheels were spinning fast. |
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2nd Jan 2013 9:12am |
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