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jlerra

Member Since: 10 Jul 2009
Location: Gibraltar/London
Posts: 149

2007 Defender 90 Puma 2.4 XS CSW Java Black

over revving during gear change

Hi all,
I have a problem when changing gear, especially the low gears (1st./2nd/3rd).
When the clutch is depressed to change gear and the foot is raised from the accelerator the revs continue to increase momenterally e.g. the revs don't drop instantly, it rises briefly.
Seems more noticeable when the engine is cold.
Any comments on experiences

El pepe flamenco JLS
'El Pepe Flamenco'

16th Jul 2010 11:18pm

LROV90

Member Since: 22 Jul 2009
Location: geelong
Posts: 10

What that will be is the clutch switch not working. On the top of the clutch master cylinder there is a pressure switch which is linked to the engine ecu that commands reduced revs when the clutch pedal is pressed.

There could be two causes for the switch not working. It's

, or the fuse is blown. The fuse is the same one as the brake lights. So you can quickly check if is blown by making sure the brake lights are working. Often using a trailer with bad wiring will blow the brake light fuse.

Good luck!

17th Jul 2010 12:04am

jlerra

Member Since: 10 Jul 2009
Location: Gibraltar/London
Posts: 149

over revving on changing gear

Thanks for the tip LROV90.
I shall investigate further.

regards
Joe
El pepe flamenco JLS
'El Pepe Flamenco'

17th Jul 2010 8:00am

Forest of Dean 90

Member Since: 29 Apr 2009
Location: Forest of Dean
Posts: 68

2007 Defender 90 Puma 2.4 HT Stornoway Grey

"Often using a trailer with bad wiring"

Don't they all have Bad Wiring

I've very rarely found one that everything works on, without having to fiddle them..

17th Jul 2010 1:13pm

bjartin

Member Since: 17 Nov 2009
Location: Hedmark, Matrand
Posts: 108

I'm having the same problem after I installed Cruise Control. It was not something I noticed before I had installed Cruise Control. The symptoms are exactly as you describe. My workshop can´t come up with a solution, must wait for the latest software. (???). Puma 90 MY 2010 (sold 2017)
Defender 110 MY 2001

http://www.youtube.com/bjartin

17th Jul 2010 2:13pm

jlerra

Member Since: 10 Jul 2009
Location: Gibraltar/London
Posts: 149

'over-reving' during gear change

Hi all,
Have been in touch with my dealer (who are pretty good and very obliging - contrary to many general comments about dealership) who is investigating with LR about the software/master cylinder switch/brake fuse and they will give me feedback prior to taking the truck in for correction.
Will keep you informed of what happens.

Joe
El pepe flamenco JLS
'El Pepe Flamenco'

19th Jul 2010 11:17am

bjartin

Member Since: 17 Nov 2009
Location: Hedmark, Matrand
Posts: 108

Re: 'over-reving' during gear change

jlerra wrote:

... they will give me feedback prior to taking the truck in for correction.
Will keep you informed of what happens.
Joe
El pepe flamenco

Hi Joe
Have you received any feedback that you want to share with us!

bjartin
waiting anxiously. Puma 90 MY 2010 (sold 2017)
Defender 110 MY 2001

http://www.youtube.com/bjartin

22nd Aug 2010 4:21pm

jlerra

Member Since: 10 Jul 2009
Location: Gibraltar/London
Posts: 149

over revving on changing gear

Hi,
Sorry for the delay in posting the result of the problem with the 'overring when changing gear'.
Thanks to LROV90 and his advice I took the vehicle to the dealer and they changed the Clutch Switch on top of the master cylinder which signals the ECU to drop the revs on gear change and the result........100% cured the problem.
So, off you go to the dealer and insist on them changing the Clutch switch on top of the master cylinder and all should be fine again.
Good luck

Joe
El pepe flamenco JLS
'El Pepe Flamenco'

22nd Aug 2010 4:32pm

bjartin

Member Since: 17 Nov 2009
Location: Hedmark, Matrand
Posts: 108

Joe, thanks for the quick reply.
Next Monday I have an appointment with the workshop and they will get a copy of your post
---- hence my problem will be history

Many thanks Joe. Puma 90 MY 2010 (sold 2017)
Defender 110 MY 2001

http://www.youtube.com/bjartin

22nd Aug 2010 4:49pm

jlerra

Member Since: 10 Jul 2009
Location: Gibraltar/London
Posts: 149

0verreving problem on gear change

Pleasure to be of help!
Also thanks need to go to LROV90!
Joe
El pepe flamenco JLS
'El Pepe Flamenco'

22nd Aug 2010 4:54pm

LROV90

Member Since: 22 Jul 2009
Location: geelong
Posts: 10

No probs!

23rd Aug 2010 12:27am

bjartin

Member Since: 17 Nov 2009
Location: Hedmark, Matrand
Posts: 108

Now is also my 90" healed, thanks to this knowledgeable and helpful forum. ( this time read LROV90 ). Puma 90 MY 2010 (sold 2017)
Defender 110 MY 2001

http://www.youtube.com/bjartin

2nd Sep 2010 2:59pm

Andrea

Member Since: 02 Sep 2010
Location: South Africa
Posts: 30

2010 Defender 90 Puma 2.4 SW Alpine White

Hi there.

I have had the exact problem with my puma and after much searching for the problem, (the dealers say that its a clutch switch or what not that they are changing but actually it is a fuse. You will notice that it starts doing it after towing> sometimes the trailer shorts witht the car and blows a fuse. Check the fuses in the driver legwell, not under the seat, will be 100%.

Good luck

2nd Sep 2010 7:33pm

AndrewS

Member Since: 10 Apr 2007
Location: Hereford
Posts: 3707

2013 Defender 130 Puma 2.2 SW Rimini Red

130's have feeling's as well you know

2nd Sep 2010 7:48pm

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