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excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5883

1999 Defender 110 Td5 SW Caledonian Blue

Low range - lack of response?

I don't often use low box other than reversing trailers or slow crawling.
What should acceleration feel like when low range is engaged?
The reason I ask is, when I tried it the other day, it felt there was no acceleration or a lack of power unless the engine is reved - hard to describe.

I drove a mates ex v8 110 (Santana box) but now a 300tdi off road around his back garden, up and down the terraces and low box felt more responsive - unlike the TD5

Am I expecting more from low box or is this normal. ? I need another TD5 to try and see what that is like, 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

19th Jan 2013 8:00pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6124

When you select low range, a switch in the t/box changes the characteristics of the throttle pedal.

Not much happens for about 80% of the travel then the last 20% will rev the engine.

Think it was designed for folk who can't 'lock' their ankles whilst bouncing around rough terrain and thus get kangarooing

There's a plug on the t/box you can unplug to stop it....I have on mine; much nicer.

19th Jan 2013 8:12pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5883

Cheers, yea that about sums it up, 80% nothing then life!

Will have a look. Is this plug easy identifiable from underneath the car ? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

19th Jan 2013 8:17pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6124

The switch is in the casting on the top of the t/box where the hi-low lever goes into:

Image from Ashcrofts; see the red plastic plug? it goes in there, and has a few inches of cable and a moulded (grey I think) plug on it. which plugs into the vehicle harness.

If you do unplug it, cover both ends in gaffer tape, just to keep the crud out of the pins.

20th Jan 2013 8:08am

ashtrans
Site Sponsor

Member Since: 08 Nov 2008
Location: Harpenden
Posts: 259

Hi

The red plug is actually the breather,

I will try to post up a photo of the high/low switch tomorrow,

Dave Dave

20th Jan 2013 8:50pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6124

D'OH!!!! You're right (of course) Dave... whoops!

Well, it's in a similar area of the box, more down on the main casting IIRC, with the flylead and plug.

21st Jan 2013 6:24am

ashtrans
Site Sponsor

Member Since: 08 Nov 2008
Location: Harpenden
Posts: 259

this one :

Dave

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated

Dave

26th Jan 2013 8:18am

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5883

Thanks Dave, that gives me a good idea.
Cheers for your assistance & everyone else. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

26th Jan 2013 8:55am

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