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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Lazy throttle pedal
On my 1999 TD5 the throttle pedal is lazy, 1" of travel before the revs increase.
So, I got it plugged into an Autologic box and as soon as the pedal is press the volts(?) on the display change but the revs don't change,
On seeing this, the pedal is doing its job? but the ECU appears to slow in responding to the changes.
Any thoughts?
By the sounds of it I don't need to buy a new pedal, I just need the ECU poking into life so the response is quicker...? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #342353 2nd Jul 2014 8:58pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6608

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Does it change if you put it in low box?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #342356 2nd Jul 2014 9:09pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Errr good call...Will check tomorrow. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #342357 2nd Jul 2014 9:12pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Still the same in Low box 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #342465 3rd Jul 2014 11:05am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17414

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It might be worth checking that the high/low range switch isn't stuck in the low position before you replace anything more expensive. I think that the switch is open in high and closed in low, in which case you could try unplugging the connector above the front output housing on the transfer box (there are two connectors, one is the high/low switch and the other the difflock switch. Unfortunately they are really inaccessible unless you take the panel between the front seats out and work from above).

Alternatively a diagnostic tool such as Faultmate can probably read the input from the switch and you should see if it is working (although ISTR that faultmate has the readings transposed, ie is says high when you're in low and vv. The important check is that the reading changes when you move the transfer selector).
Post #342471 3rd Jul 2014 11:12am
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Is that the panel under the cubby box / middle seat? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #342474 3rd Jul 2014 11:16am
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
Yes 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)
Post #342489 3rd Jul 2014 11:49am
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Cheers all. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #342513 3rd Jul 2014 1:19pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
I'd forgotten about this thread!
The only update I have is, the MAF has been swapped and the transfer case is now a Disco one with no High/Low switch and the pedal is still the same. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #400563 20th Feb 2015 12:50pm
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GREENI



Member Since: 22 Aug 2010
Location: staffs
Posts: 10383

United Kingdom 
Give the potentiometer a good squirt of wd40..
Post #400567 20th Feb 2015 1:02pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5719

2006 Defender 110 Td5 USW Zermatt Silver
Got a spare potentiometer here if you need. What have you done with high low wires. Left unconnected or joined them?

May be worth while trying the two options. Pedal should work differently in high compared to low.

Andy
Post #400571 20th Feb 2015 1:07pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
The high/low has been left as is not connected AFAIK

The spare potentiometer could be a good move, is this the same across all years? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #400572 20th Feb 2015 1:11pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
GREENI wrote:
Give the potentiometer a good squirt of wd40..


WD40 or contact cleaner? Is the potentiometer hidden under a cover? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #400574 20th Feb 2015 1:11pm
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GREENI



Member Since: 22 Aug 2010
Location: staffs
Posts: 10383

United Kingdom 
Yeah, mine on the Ibex was not working, even though it was put on the bulkhead, to keep it out of harms way Laughing
wd or anything really will do.
A quick strip and squirt Very Happy had it sorted.
here's a pic from my Ibex, so you know what you're looking for.

Click image to enlarge
Post #400579 20th Feb 2015 1:19pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5849

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Cheers GreenI. Yours is cable operated I guess?

I shall have a look over the weekend and see what I can see. Mine is in the normal place in the footwell. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #400580 20th Feb 2015 1:21pm
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