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Nigelpugh7

Member Since: 18 May 2018
Location: Solihull
Posts: 115

My TD5 Rev Counter has stopped working

Hi Guys,

Any ideas what might have happened to my Rev Counter, as it’s suddenly stopped working?

It’s one I have had before on my other Defenders and has worked fine.

It’s also been working fine on my Td5 for about a year, but now it’s suddenly stopped working.

It’s one of the VDO aftermarket types, with the DIp switches for engine type.

It used to flick when turning the engine to ignition, but it’s not even doing that now.

I have checked the ground and +ve with my multimeter,,and all seems good.

I don’t have a scope to check the pulse feed though.

Any other way I could run a test?

Do we think it might just have died after 10 years of use and abuse?

Thanks in advance.

Nigel.

Photo for Effect.

Click image to enlarge

2nd Jan 2020 1:26pm

doublecabjon

Member Since: 28 Sep 2014
Location: Dorset
Posts: 31

My one used to mess about at the connection where I spliced into the signal wire at the ecu multiplug. I sorted this out with a proper waterproof heat shrink crimp connector and all is well. Worth a look/ wiggle as it’s only a seat base remove with standard seats.

4th Jan 2020 9:42pm

Nigelpugh7

Member Since: 18 May 2018
Location: Solihull
Posts: 115

Thanks for taking the time to respond.

Will looking into the feed for the signal.

I’ve been checking the connections under the driver seat too, but can’t see any issues.

I’ve got another rev doubter now to try, but not sure it will be any good for coding that a td5 needs.

Will report back as I test things out,

5th Jan 2020 7:24pm

Nigelpugh7

Member Since: 18 May 2018
Location: Solihull
Posts: 115

New Rev Counter fitted

So just an update on this issue.

We have not been out much in our TD5 due to lockdown, but as it’s eased we have started doing a few jobs.

Never found any issues with the wiring, so decided it must be a fault with the Rev Counter itself and ordered a new TD5 genuine one from Rimmer Brothers.

Wired it all up yesterday, powered up fine, did the full test on power up and the illumination was all good, but as before no revs indicated.

So we started to do some more trading of the wires.

As power seemed good, we concentrated on the ecu pulse feed.

We did some continuity tests back to the pin on he ecu, and found that it was all good.

On our 2000 model year car, we have a grey and white cable that comes out of the black pin on the ecu.

It is then in the loom at the back of the dash pack.

And of course we then found the fault.

The cable for the ecu pickup was just loose in the great connector plug, replaced the pin, soldered and crimped it, and we instantly had revs working on the new gauge.

Checked the previous gauge, which of course now works fine again.

So now we have a TD5 VDO Low Tension model Rev counter spare.

My own fault for not checking the wiring more thoroughly.

Click image to enlarge

26th Jul 2020 6:26am

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