 | Home > Td5 > TD5 Driver Demand |
 
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| diesel_jim Member Since: 13 Oct 2008 Location: hiding Posts: 6092   
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Could be a break in the throttle cable (sorry... "driver demand") cable.
If you've got a nanocom (and I assume other devices read the same data) there are 2 or 3 signal wires coming off of the pedal (Depending on it's age... early ones were 2 track, later 3 track), the nanocom should read the voltage off of them... 0-5v on one, 5-0v on the other (depending on where the pedal is in its range of movement..ie, foot OFF the pedal... tickover... one track will show 0v, other will show 5v (And on the 3 track system, I'm not sure what the 3rd one shows, between 0 and 5v but I don;t know which way)).. the ECU then sorts it out and gives a relative throttle position for the engine. anyway.... maybe one of these are duff? on a separate note... wifes suzuki vitara, 2.0D from 2003... had a similar thing; had 3 or 4 complete pedal assy's changed over the years until I kicked up a fuss at the dealers, and suddenly a "repair" harness appeared from Japan. apparently there was a break/fault/Geishi doll stuck in the vehicle wiring harness causing the fault. Could be a break in the Td5 loom (or a Brummie eating a pasty)... |
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3rd Jan 2019 8:41pm |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 2769
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Oil in the ECU, wiring loom?
I am guessing the injector harness has been replaced. Is there any oil showing at the ECU red plug? |
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3rd Jan 2019 8:59pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5700 
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Loom from pedal to ECU. I’ve done a few of them.
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3rd Jan 2019 9:12pm |
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| mk1collector Member Since: 17 Sep 2009 Location: West Yorkshire Posts: 6769  
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Check for oil in ecu plug and unplug the MAF and drive around to see if the power comes back. Ray
My build thread http://www.defender2.net/forum/topic17615.html |
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3rd Jan 2019 9:31pm |
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| TJ101 Member Since: 30 May 2007 Location: Taunton Somerset Posts: 3750  
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Thanks all
I am thinking loom, the "flat spot/hesantance" is about one third throttle , so am suspecting that wire ? will check them all back to the ECU for continuity tomorrow morning Not sure why, the unit fitted in August failed ?? it certainly does not work, or give the figures you quote Jamie !! Symptoms aren't the "oil on injector loom" lighting . all Driver Demands , plus the odd AC, and Tacho drive ! but i did check the loom into ECU for oil, as i sat beside the road,  as first thought !!
I presume you just make up a new loom Andy ? 7 core trailer cable ? California F1, 75th 110 "Kermit", 50th Ann V8, 90 V8 Hybrid, 55 Series 1 Main Brian James Trailer Dealer for South West UK |
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3rd Jan 2019 9:39pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5700
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Yes. Just used trailer wire as you say. Not a bad job to do, as long as you can keep warm enough to feel your fingers.
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3rd Jan 2019 9:43pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8029  
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As before, I wouldn't bother looking for wire break, just replace all with multi core wire. Now have backup for tomorrow so soft top available, home 1900, ring if require it. Cheers
James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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4th Jan 2019 6:48am |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2166 
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I would change the Crank Sensor (genuine only) and the MAP sensor (gen only). Both can cause the issues you describe. Just because the throttle input seems off doesnt always mean it is the thottle itself. Instagram @defender_ventures
Empire Tuning - Agent |
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4th Jan 2019 8:15am |
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| TJ101 Member Since: 30 May 2007 Location: Taunton Somerset Posts: 3750
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Well, Fingers crossed sorted
Replaced pedal socket and loom,, all good to go now,, Question is ? why 2 pedals in 6 months , the August one certainly does not work, have the feeling the loom may have been the problem back then ? But would the loom "burn" out the august unit ? As it was fitted by previous owner ? can only speculate Thanks for the input guys California F1, 75th 110 "Kermit", 50th Ann V8, 90 V8 Hybrid, 55 Series 1 Main Brian James Trailer Dealer for South West UK |
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4th Jan 2019 10:39am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5700
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I can only assume that the damaged loom puts electrical spike, or voltage the wrong way into the pedal potentiometer.
They can be a long on going problem, one I fixed was a problem over a year and initially only occurred when puddles had been driven through. Bloody quick work done there. Well done, which I could get my arse in gear to sort my Defender out. |
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4th Jan 2019 11:02am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5843 
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Is this pedal loom available as a separate part? 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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4th Jan 2019 11:45am |
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| TJ101 Member Since: 30 May 2007 Location: Taunton Somerset Posts: 3750
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No,, Part of the engine loom,, so the dealer says,, Plugs on the bay of E
It had to be sorted by today,, Recovery duties this evening ! I did say fingers crossed !! California F1, 75th 110 "Kermit", 50th Ann V8, 90 V8 Hybrid, 55 Series 1 Main Brian James Trailer Dealer for South West UK |
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4th Jan 2019 11:59am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5700
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Buying the plug must make it a bit easier and save a bit of time. Will remember that for next time. I’ve always cut the loom at both ends and reused plug and 6” of loom. Much prefer your method.
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4th Jan 2019 12:02pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17382 
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Britpart ? |
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4th Jan 2019 12:04pm |
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