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johnp1887

Member Since: 24 Jul 2016
Location: Kirkby Lonsdale
Posts: 32

REVERSING IN HIGH RATIO IN MY 90

Hi , i'm struggling with trying to reverse smoothly (and slowly!!) in high ratio in my 2.4 puma defender. the revs increase to about 1100 with clutch pedal released, I find that I have to apply the brakes as i'm reversing.is there a high/low switch on this defender,, my local dealer says that there isn't one, but he's not too sure. just had a new clutch fitted and its doing my head in. much preferred my old 300 tdi!!

forgot to mention that it does it in forward gears as well which is a pain in slow moving traffic
I tried disconnecting the clutch switch and the tickover is raised all the time to 1100 rpm, so I know that the clutch switch is ok
as soon as the vehicle moves forward the revs increase and the speedo works ok so I guess that the speed sender is ok as well

Many thanks to everyone, I fitted a new switch (IGM100000) today and now everything is as it should be.

Last edited by johnp1887 on 25th Jul 2016 6:13pm. Edited 2 times in total

24th Jul 2016 10:52am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Reverse is a taller gear ratio slightly than 1st, just the way it is. You could always use reverse in low range instead.
Most likely better for tight manovering, especially with a load on.

24th Jul 2016 11:08am

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4209

2007 Defender 110 Puma 2.4 XS CSW Java Black

It sounds like it is activating the increased idle speed that you should only get in first/reverse low range. I can imagine that would be very tricky. Does it do the same in first? Unfortunately I have no suggestions on how to fix it, someone is sure to know though. Sounds like a switch somewhere to me.

24th Jul 2016 11:17am

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey

As above.

There is a 'switch' I presume mounted on the transfer box adjacent to the linkage that jacks the revs up in low range to assist with matching revs in 1st n reverse and assist in effectively reducing torq in the lowest gear ratios.

Sounds either like switch is broke / disconnected or badly adjusted such that it thinks it's in low range when it's not.

Good luck.

24th Jul 2016 12:15pm

johnp1887

Member Since: 24 Jul 2016
Location: Kirkby Lonsdale
Posts: 32

Thanks for the info, there are 2 switches on the transfer box, one will be for the diff lock warning light and I assume the other will be the hi/lo switch, I had thought that one would be for the reverse lights, but I have been told that the reverse lamp switch is on the main 'box
thanks for the help

24th Jul 2016 12:58pm

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

YEP on main box for reverse.

let us know how you get on.

24th Jul 2016 2:09pm

Happyoldgit

Member Since: 14 Sep 2007
Location: Norfolk
Posts: 3471

2015 Defender 110 Puma 2.2 USW Corris Grey

I don't think there is anything wrong TBH, all my Puma's have been very much the same. Low range is your friend when maneuvering in reverse. Steve.
Owned numerous Land Rover vehicles of all shapes and sizes over the decades.
Current Defender: A non tarts hand-bagged Puma 110 XS USW.

[Insert something impressive here such as extensive list of previous Land Rovers or examples of your prestigeous and expensive items, trinkets, houses, bikes, vehicles etc]

http://forums.lr4x4.com

I used to be Miserable ...but now I'm ecstatic.

24th Jul 2016 7:24pm

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

Steve, I think we're talking increased revs in Hi range not Lo

24th Jul 2016 7:26pm

Happyoldgit

Member Since: 14 Sep 2007
Location: Norfolk
Posts: 3471

Yes I know that. My point was that reversing [on tick over in high range] is often a bit speedy, hence my suggestion to use low range. In fact Land Rover used to recommend using low range for tricky reversing situations rather than slipping the clutch in high. Steve.
Owned numerous Land Rover vehicles of all shapes and sizes over the decades.
Current Defender: A non tarts hand-bagged Puma 110 XS USW.

[Insert something impressive here such as extensive list of previous Land Rovers or examples of your prestigeous and expensive items, trinkets, houses, bikes, vehicles etc]

http://forums.lr4x4.com

I used to be Miserable ...but now I'm ecstatic.

24th Jul 2016 7:38pm

Riccarton

Member Since: 10 Aug 2015
Location: Gods' Own Country
Posts: 280

2012 Defender 90 Puma 2.2 HT Zambezi Silver

I think you may need to compare it with another to give you a starting point.

My 2.2 (and to fair my 2.4 3 vehicles ago) spends at least 75% of its time towing and whenever I arrive home things are fairly tight. I only need low range for the final manouvring (Ifor lives beneath the cattle box with approx' 3 inch per side clearance). The rev increase is noticeable (idle-jack) in low range but never a problem in high range.

If you try another at least you'll have something to gauge it by.

Incidentally, are you getting mixed up with the "anti-stall"? If you allow it to settle down by reversing a decent distance with the clutch out does it calm down?

24th Jul 2016 8:11pm

Cupboard

Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

2011 Defender 110 Puma 2.4 HT Corris Grey

Idle jack should only happen in low range, tickover in high range should be tickover and that's that.
Thing with low range is that whilst the gearbox knows it's in low, it doesn't know it's in first or reverse. The ECU guesses based on your speed. That can make the car seem a bit broken if you're waiting for something to happen in low neutral and it occasionally revs itself for no apparent reason.

24th Jul 2016 8:15pm

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

Happyoldgit wrote:
Yes I know that. My point was that reversing [on tick over in high range] is often a bit speedy, hence my suggestion to use low range. In fact Land Rover used to recommend using low range for tricky reversing situations rather than slipping the clutch in high.

Fare enough.......but even mine doesn't tick over at 1100rpm in Hi so I think the issue here is he's experiencing idle jack in Hi and finding it too quick?

Me thinks?

P.s. I'm off to check on my clatter

24th Jul 2016 8:41pm

Wild Card 90

Member Since: 03 Dec 2014
Location: Gerlingen
Posts: 1060

2012 Defender 90 Puma 2.2 SW Indus Silver

I wasn´t sure when I first read this thread, but driving my 2.2 this morning, I noted that the governed idle stays at 800 rpm in first or reverse with the clutch engaged. The idle only going up to 1100 rpm in low range. There must be a mechanical switch somewhere on the box that passes the info onto the ECU/electronic throttle, and it is more than likely that this or the harness is faulty, or the plug has come loose. Might be a really easy fix, and a massive source of satisfaction, being able to solve the problem without getting a dealer or workshop involved

. I'd suggest a quick look underneath, with a torch

1998 Tdi 90 SW,
2008 Td4 90 SW,
2012 2.2 90 SW,
2" raised Trailmaster/Terrafirma
Heavy Track Raids, 255 MT´s,
Recaro CS´s, anorak, wellingtons

25th Jul 2016 8:31am

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

I believe it only goes up to 1100 rpm once it's registered some movement (IIRC).

25th Jul 2016 8:34am

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4209

The revs go up on my 2.4 as soon as you start to lift the clutch in 1st/reverse low range, no movement needed.

25th Jul 2016 3:52pm

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