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silky16v

Member Since: 11 Aug 2014
Location: Cumbria
Posts: 99

2001 Defender 90 Td5 X-Tech LE Blenheim Silver

abs and warning light flickering when under throttle

Hi strange one this, had some problems originally with the 3 lights (warning, abs ,tc)

It is a 2001 TD5 Defender 90 X-Tech

fixed those by aligning the sensors, now when i drive all the light go out (handbrake doesn't seems to work)
but as you apply power in any gear the abs light flickers and sometime the warning light, but as soon as you come off the power or coast with very very light throttle they go out.

have had it code reader (garage spec 2013 snap-on) and nothing is showing as faultly

then the other day i though while driving (slowly though) i'll just slightly pull the handbrake lever up just until it starts to bite and hey presto the flicking abs lights goes out

the previous owner had fitted a new handbrake cable and there seems to be a lot of travel in the handbrake lever about 30deg of movement, i've checked the switch and that looks all ok

i've done the usual checks for earth cables by the ecu's and checked for any signs of damp and oil in both looms
i've ran a new earth wire 5mm thick from ecu compartment to the bulk head and this has made no difference

the TC & ABS work fine (tested these off road on some gravel at a local MX track) checked brake fluid levels and float has full movement

is there a switch on the gearbox or sensor that might need cleaning replaced and if so where about's is it?

would like to try and get to bottom of the flicking before winter and fix the handbrake light coming on and off

Thanks for any help

16th Sep 2014 1:23pm

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

Chafed cable under the vehicle. Mine initially only manifested itsel in damp conditions but in the end got worse so I could find it. Intermittant faults are always the worse to find. Took a while but on page 3 I finally located it.

http://www.defender2.net/forum/topic2394.html?highlight=inline If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!

16th Sep 2014 1:51pm

silky16v

Member Since: 11 Aug 2014
Location: Cumbria
Posts: 99

yeah i seen that thread the other day and have checked and the cabling and all looks ok, will have another dig around.

it just seems weird its connected to the acceleration and then backing off, so thats why i though gearbox sensor

16th Sep 2014 2:27pm

roel

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

Could bearing play cause this? 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)

16th Sep 2014 9:03pm

Ken B

Member Since: 17 Dec 2013
Location: Essex
Posts: 106

I had same problem and spent months looking, eventually noticed despite all earths being good that there was spiking voltage to ECU !

Earths on battery boxes on both drivers and passengers side of my 90 seemed intermittently faulty, ran a new earth from the battery and through the chassis to both sides.

All sorts of issues sorted ! Defender 90 TD5 County -
You need only two tools in life: WD-40 and duct tape.
If it doesnt move and it should: WD-40.
If it moves and shouldnt: duct tape it.

20th Sep 2014 8:41pm

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1919

2010 Defender 110 Puma 2.4 USW Santorini Black

Loose connection on the abs socket 2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

20th Sep 2014 8:46pm

silky16v

Member Since: 11 Aug 2014
Location: Cumbria
Posts: 99

fixed

just an update fixed it finally today

first off replacement handbrake light switch from LR, that sorted the handbrake light working but the lights continued to flicker

i then remove the whole handbrake assembly and touched the wire to HB switch straight to the chassis, red light came on wiggled wire no flickering

so suspected the the handbrake assembly isn't earthing correctly, so rubbed off some paint on the body beneath the HB and re-fitted went up the road and wiggled handbrake no more flickering

Problem solved

oh also adjusted HB to 3 clicks now instead of 5

2nd Oct 2014 7:33pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1628

Try cleaning the White earth header block (plug with loads of wires going into it)beside the pedal boxes and steering column on the bulkhead (left hand side engine bay side near the expansion tank) earths through the stud its fitted to. This controls the instrument warning light earths.

2nd Oct 2014 9:16pm

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