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Toplink



Member Since: 05 Dec 2010
Location: Somerset
Posts: 159

United Kingdom 
Loss of throttle response!
57 plate 90 80k. Traveling on A38 from Plymouth to Exeter 65-70 mph at the bottom of an incline,I depressed the throttle pedal to maintain speed coming off over run.No response nothing slowed down to 50mph just able to maintain that speed,but foot flat to floor.Pulled over checked all the connections etc all satisfactory.Turned off waited 5mins,started engine carried on with journey as if nothing had happened. Checked out ecu codes,no codes. Any ideas? Its never over in my land rover.
2007 Defender HTop.
1952 Series One 80"
1977 Muir-Hill 111.
2014 Triumph Tiger800xc
1999 Discovery 2 td5
1982 Ransomes TSR300D.
2002 Yamaha XT600e.
2010 Freelander2 (the wifes)
2008 John Deere X140
Post #281123 10th Nov 2013 9:48pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20325

United Kingdom 
No MIL light / limp mode? Sounds like a possible fuel starvation issue. (Wouldn't worry) what revs were you at? ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️
Post #281124 10th Nov 2013 9:51pm
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vinsell



Member Since: 06 Feb 2009
Location: Brindisi (Italy)
Posts: 74

Italy 2008 Defender 90 Puma 2.4 SW Zermatt Silver
Re: Loss of throttle response!
Toplink wrote:
57 plate 90 80k. Traveling on A38 from Plymouth to Exeter 65-70 mph at the bottom of an incline,I depressed the throttle pedal to maintain speed coming off over run.No response nothing slowed down to 50mph just able to maintain that speed,but foot flat to floor.Pulled over checked all the connections etc all satisfactory.Turned off waited 5mins,started engine carried on with journey as if nothing had happened. Checked out ecu codes,no codes. Any ideas?


I had the same and at the end I replace egr valve, turbo actutor harness (that was broken) and turbocharger (because actuator was gone). Now my Def is better than new. Note that egr valve and turbocharger are different than the original and harness was been modified according to a technical bullettin. They are improving defender with our money! Confused
Vinicio https://google.com/+VinicioSelleri
Post #281163 11th Nov 2013 6:32am
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cobs



Member Since: 12 Jun 2008
Location: North Yorkshire
Posts: 336

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Cairns Blue
@Toplink

Would be interested to hear if you get to the bottom of this - I had a similar problem with a VW Passat recently, switched off then on and all fine - ran fine for next two thousand miles. It's just started again, wondered if it was weather related.
Post #281224 11th Nov 2013 1:01pm
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

Unplug the accelerator pedal multiplug and coat with electrical contact cleaner. The area around the plug can get wet causing mineral contamination of the plug pins. Also when you are there check the condition of the harness.


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Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green
Post #281301 11th Nov 2013 6:22pm
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Toplink



Member Since: 05 Dec 2010
Location: Somerset
Posts: 159

United Kingdom 
Right update.
No mil on and no codes on SDD or Snapon micro scanner.
Historic fault noted on SDD @456 miles that was on the second day from new.
Ran through an air passage flow test on EGR and Turbo,nothing conclusive.
LR tech bulliten recommends replacing actuator arm(only costs a few quid so worth a try).
As problem has only happened once,I think I will just drive it on and see what happens.

Thanks for your replies. Its never over in my land rover.
2007 Defender HTop.
1952 Series One 80"
1977 Muir-Hill 111.
2014 Triumph Tiger800xc
1999 Discovery 2 td5
1982 Ransomes TSR300D.
2002 Yamaha XT600e.
2010 Freelander2 (the wifes)
2008 John Deere X140
Post #281760 12th Nov 2013 10:33pm
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JoostKenya



Member Since: 31 Jan 2010
Location: Naivasha
Posts: 9

Kenya 
Is the raddiator low on water?
And was the engine almost overheating?
In that case the ECU is taking the power down and no fault being logged in the ECU.

In other cases (like the throttle) I would expect a fault in the ECU. Joost
Defender 110 Puma 2.4
Tornado TD5 Racer
Defender 110 V8
Defender 136'' 300Tdi Safaricar
SIIA V8 Hybrid
Post #281784 13th Nov 2013 7:30am
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Toplink



Member Since: 05 Dec 2010
Location: Somerset
Posts: 159

United Kingdom 
No over heating probs and no coolant losses and no fault codes logged.

Its done it another 4 times on a recent 1.4k trip to Scotland. Only way to correct is to pull over and switch off ingnition turn straight back on and away you go. I can now do this on the move it saves pulling over. Its never over in my land rover.
2007 Defender HTop.
1952 Series One 80"
1977 Muir-Hill 111.
2014 Triumph Tiger800xc
1999 Discovery 2 td5
1982 Ransomes TSR300D.
2002 Yamaha XT600e.
2010 Freelander2 (the wifes)
2008 John Deere X140
Post #289672 11th Dec 2013 10:39pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17362

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Volume Control Valve on fuel pump malfunctioning or sticking perhaps. Very similar to some of the symptoms I had, and generally won't raise a DTC.
Post #289741 12th Dec 2013 10:30am
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