Tachometer not working

15 Beiträge · 11.186 Aufrufe · gestartet

#1
I have just noticed that my rev counter does not operate.

How do I find the problem and what do I check / test?
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#2
You will have a dry joint (solder connection) in the electronics of your odometer. That's very common. There are instructions available how to re-solder it, but I'm not aware if in English as well...

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#5
Hi Sean
A 4.2! Have you any photos
There a few of us with Audi V8's on
http://www.classic-audi.co.uk/
And there's a couple Audi car shows
Audi,'s in the park ,Northampton on August 13/14
Audi driver international at Castle Combe October 15

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#9
I was already registered on this website.

My username is Audi V8
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#10
Tachometer is still not working on the car.

I have removed the Instrument Cluster (IC) and checked all of the solder connections without finding anything that looks like a problem.

Has anyone any suggestions?
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#11
Hi Sean,

do you have an after market sound system installed?

Regards

Bastian
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#12
On mine I also didn´t see any defect. I just resoldered everything I could and after that it all worked again.
As far as I remember it has to be that. If the sensor would be broken the car wouldn´t start.
The cold solders are a very very common problem (also on the Audi 100 etc).
So Chances are very high that this is your defect.
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#13
Bastian, in this case tachometer means Drehzahlmesser!
In his first posting he wrote "rev counter"
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#15
I have had the instrument cluster board resoldered but the tachometer still does nothing - everything else is working fine on the dashboard.

I would like to trace the wiring back to the engine sensor but I do not have a wiring diagram for the car?

Where is the ECM on the car?
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