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Procta

Member Since: 03 Dec 2016
Location: Sunderland
Posts: 5165

TD5 rev counter hit and miss.

had the car running today, and then the rev counter just stopped. if i mess with the blowers it sort of comes back on line? when i fire the car up into life, all is working, but after a bit of a drive, the rev counter just goes like that,

Click image to enlarge Defender TD5 90 ---/--- Peugeot 306 HDI hatch back

Success is 90% Inspiration and 4 minutes Preparation # you can make it!

14th Apr 2022 6:20pm

markb110

Member Since: 22 May 2010
Location: Guildford
Posts: 2634

I am assuming you checked the condition of the wire going into the back of the ECU.

Unless its the unit itself i cant think of what else you can check part from the main earth strap.

Did this happen at the same time the rear lenses melted?

14th Apr 2022 8:27pm

balmybaldwin

Member Since: 17 Apr 2021
Location: Surrey
Posts: 192

2002 Defender 90 Td5 CSW Buckingham Blue

Have a look behind the dash.... sounds like a poor connection being jogged by the fan leaver. These weren't standard, it's possibly an after market add on so might have bodged wiring in need of a repair

14th Apr 2022 8:48pm

roel

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

You might check the voltage.
When my Alternator died while off-roading, on the way home the rev counter was the first thing that stopped working. 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)

15th Apr 2022 5:42pm

Penfold_6290

Member Since: 22 Sep 2021
Location: Dorset
Posts: 317

The tachometer on my Td5 receives its signal from the ECU not the alternator. I wonder if you have some connection or earthing issues with the instrument pack?

16th Apr 2022 7:11am

grafty99

Member Since: 15 Aug 2012
Location: North Devon
Posts: 4785

As its down past the zero mark I'm pretty certain it'll be a power problem rather than a signal problem.

Mine sits like that with the ignition off, then when you turn on the ignition the needle rises to zero.

I'm sure you'll find a poor connection behind the dash binnacle

2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
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16th Apr 2022 7:25am

Procta

Member Since: 03 Dec 2016
Location: Sunderland
Posts: 5165

cheers pal

Defender TD5 90 ---/--- Peugeot 306 HDI hatch back

Success is 90% Inspiration and 4 minutes Preparation # you can make it!

18th Apr 2022 12:30am

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