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loki



Member Since: 12 Mar 2013
Location: Pula
Posts: 16

Croatia 2007 Defender 110 Puma 2.4 CSW Belize Green
puma acceleration problem
Hi,
since last week I have a new issue on my defender.
When I'm changing the gear the rpm are getting higher even if I leave the accelerator.
This does not happen if the car doesn't move .
If I disconnect the speed sensor on the gearbox the problem doesn't exist but with this sensor disconnected
I'll have a loos of power over 40 kmph.
I tried to disconnect the clutch switch but nothing changed.
This issue is present only if the car is moving .
Does anybody have the same problem?
Sorry if my English isn't perfect , hope you understood the kind of problem I have
Post #322961 10th Apr 2014 6:21pm
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dulwich man



Member Since: 29 Nov 2011
Location: Dulwich
Posts: 64

United Kingdom 2009 Defender 110 Puma 2.4 XS CSW Stornoway Grey
May sound mad but have you blown a fuse?
Had a similar problem and only found out from replacing a fuse on the brake light circuit
Post #323053 11th Apr 2014 9:57am
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Whitewaitress



Member Since: 26 Nov 2013
Location: Liverpool
Posts: 47

I had the same problem and as dulwich man says, a blown fuse for the brake lights was the issue! Apparently it controls something else related to the revs on gear change - don't know how true this is. Worth a shot for the cost of a fuse though!!
Post #323054 11th Apr 2014 10:07am
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bob neville



Member Since: 30 Apr 2009
Location: Marbella
Posts: 3248

Spain 2001 Defender 90 Td5 SW Epsom Green
Had the same problem on my 2009 DC.

Blown brake light fuse. Can also happen if both brake light bulbs fail.

Bob 2015 Jaguar XE240 R Sport - goes like ....... !!
2013 Defender 90 CSW - sold
2009 Defender 110 Double Cab - sold
2001 TD5 90 CSW - offroad project - sold to a forum member
2011 Porsche Boxster - for the sunny days !
Post #323065 11th Apr 2014 11:38am
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loki



Member Since: 12 Mar 2013
Location: Pula
Posts: 16

Croatia 2007 Defender 110 Puma 2.4 CSW Belize Green
Hi Guys ,
problem solved:)
you were all right , it was the fuse.
Never had such a stupid situation. Its funny how a light fuse could influence the engine performance.
I've spent all the week tiring to solve that problem.
Thank you !!!
Post #323067 11th Apr 2014 12:05pm
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Swollock



Member Since: 16 Mar 2013
Location: Wellingborough Northants
Posts: 262

United Kingdom 2008 Defender 110 Puma 2.4 XS CSW Bonatti Grey
Sorry to hijack the thread but I have had a slightly different twist on this problem. Mine has a tendency to rev when changing up and it was Bobs comment about blown bulbs lead me to a thought. I have RDX LED lights fitted, so are high ohms and could I supposed look like blown bulbs, checked with a meter and they are 6K. I changed them back to standard filaments and hay presto no problem.

Am now working on adding a suitable resistor say 22 ohm to make them look more like bulbs. Will update here when done if it helps solve the problem. 2008 Defender 110 XS CSW
Volvo S60 T8
Triumph 1200 Rally Explorer
G0UBX
Post #323811 15th Apr 2014 8:02am
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558

England 
on tdci there are two switches on the brake pedal ,im sure one is just for brake lights the other is for ecu so cant really see how bulb blowing or led light can make a difference, not 100% but never heard any problem caused by that sort of thing
Post #323932 15th Apr 2014 6:04pm
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dulwich man



Member Since: 29 Nov 2011
Location: Dulwich
Posts: 64

United Kingdom 2009 Defender 110 Puma 2.4 XS CSW Stornoway Grey
I picked up the way solve the problem form another thread on this forum. it would seem that others have soled the problem . from memory others stated that with the brake light fuse blown the unit on the accelerator peddle thinks that you are in low range hence the change accelerator fueling.
Post #324077 16th Apr 2014 12:40pm
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carrotbay



Member Since: 18 Aug 2013
Location: Northants, UK
Posts: 699

United Kingdom 2008 Defender 110 BMW M57 3.0 Diesel XS CSW Auto Santorini Black
Swollock wrote:

Am now working on adding a suitable resistor say 22 ohm to make them look more like bulbs. Will update here when done if it helps solve the problem.


I'd be interested in hearing if this solves the problem. 2008 Defender 110 XS SW - M57N2 / 6HP28X
Post #324701 19th Apr 2014 2:27pm
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WelshGas



Member Since: 01 Oct 2010
Location: Vale of Glamorgan
Posts: 935

Wales 2010 Defender 90 Puma 2.4 XS CSW Santorini Black
I too have the full RDX led light set. But I have no problems with engine revs changing on gear change, either up or down the gears. LANDYWATCH

Neighbourhood Watch for Land Rover Owners

http://www.landywatch.co.uk/smf2/index.php
Post #324715 19th Apr 2014 4:27pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6300

England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Engine not running quite right......?

How come people don't realise the brake lights aren't working and hence fixed before the engine which as we know would fix the engine anyhow?
Post #339731 21st Jun 2014 8:52pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20444

United Kingdom 
As WelshGas said above is the same scenario as me.
Post #339732 21st Jun 2014 9:30pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6300

England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Aha fair enough but I'm sure some have mentioned the fuse replacement fixed engine problem......presumably they were driving round without brake lights but it wasn't till the engine issues they looked to replace the fuse and as a by product they sorted lights. Shocked
Post #339736 21st Jun 2014 10:30pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
Has anyone with a normally working Puma actually taken out their brake light fuse to test if this is a "reliable" fault?
If not, I might try it today. Is it in the fuse panel under the dash or under the seat?

Matt Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #339753 22nd Jun 2014 6:15am
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dulwich man



Member Since: 29 Nov 2011
Location: Dulwich
Posts: 64

United Kingdom 2009 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Under the dash
Post #339759 22nd Jun 2014 7:08am
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