 | Home > Td5 > limp - at 3mph?? |
 
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| ppad Member Since: 16 Nov 2012 Location: now, UK S Coast Posts: 218   
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Hi all,
Well a wet Sat eve in the New Forest and for the first time my trusty 05 75k mile 90 that has taken me to Switzerland and back - turns on the engine light and decides that I can go no faster than a hedgehog with a broken leg. At the time I had just bumped thro puddles on an unmade road - gently. I need to know what to do first. I have no experience with this sort of problem This post looks helpful http://www.defender2.net/forum/topic37666.html But also: Seriously - is 3mph normal? I tried turning off, waiting restarting to no avail. After 90 mins and 2 miles or so I had reached a pub and stopped for a refresher and then - it fired normally. And a tad disappointed that two defenders passed as I crawled with hazard lights on and... passed me. In the Rising Sun an excellent chap with ex army 300tdi - many thanks to him. And - if it happened once I assume it will now keep happening till I fix it (or get a tdi)..? So I really really want this to go away Thanks all Sold the much modified 110 2.8, in Oz Brought the 90 home from Switzerland ... |
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11th Feb 2018 9:34am |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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Mine get's wet sometimes but never had that problem yet.
 Click image to enlarge So it must be fixable and not a permanent problem. Roel 1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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11th Feb 2018 12:47pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2065 
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Change the crank sensor for a genuine unit.
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11th Feb 2018 1:21pm |
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1758 
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Sounds like it might not be getting a throttle pedal signal, so just sitting at idle?
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11th Feb 2018 3:20pm |
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| ppad Member Since: 16 Nov 2012 Location: now, UK S Coast Posts: 218
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Thanks for the replies, in between hail showers had a wee peek and it's not oil in the electrics, so the two suspects of crank sensor and throttle pedal signal... 'not getting a throttle pedal signal'... maybe. 3mph that was the crazy part. If you are 500km from anywhere in Strzelecki desert it'd be a thirsty week. Idle indeed.
So in the morning off to Ben at Sway, if he has got a Nanocom. Will it tell me which? Never got that wet in Aus, only this wet. An that was bad driving. 
Click image to enlarge Sold the much modified 110 2.8, in Oz Brought the 90 home from Switzerland ... |
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11th Feb 2018 8:17pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039
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If the engine light is on and there is no reaction on the throttle pedal. That might be the first thing to look at. If you switch it off and disconeect and connect again the black plug on the ecu. It might work again. Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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11th Feb 2018 8:52pm |
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| JustFX Member Since: 10 Nov 2016 Location: Mendip Hills Posts: 190 
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If you get some water/dirt on the MAF it can cause a kangaroo to get in control of the throttle.
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11th Feb 2018 9:20pm |
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| ppad Member Since: 16 Nov 2012 Location: now, UK S Coast Posts: 218
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Took opinions ... crank sensor failure should stop the car (?) until the sensor decides to sense again. Diagnostic code / display of 'driver demand failure' and that the car went into tickover mode only .. suggest more to throttle pedal.
So this has been changed and now we wait and see. Being a sealed unit no way to physically know. Ben in Sway reckons that my muscle memory is the problem  ... each driver drives at exactly the same throttle position just from habit and will wear the sensor. Flamin' electronics. Sold the much modified 110 2.8, in Oz
Brought the 90 home from Switzerland ... |
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15th Feb 2018 12:09pm |
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1758
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In the nanocom you can look at (from memory) engine inputs fuelling, then one of the pages shows the voltage on the throttle pedal tracks. It has either 2 or three tracks. Mine is the 2 track so:
1 voltage is always 5V (reference) 1 voltage is 0v when pedal up and 5v when pedal down 1 voltage is 5v when pedal up and 0v when pedal down. The two variable voltages should always add up to 5v, if they don't then the ECU assumes pedal fault. I believe the three track uses a similar system with voting, ie voltages should add up to 5V or be equal. |
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17th Feb 2018 2:36am |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039
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yes the 3 way ones has 1 track from 0 to 5 V and 2 tracks from 5 to 0 V. Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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17th Feb 2018 11:03am |
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