Jumpy tacho??

[billyjack]

Hi guys, the tacho in my 98 petrol disco is jumping around when cruising, it appears to be steady during acceleration.Any clues to it's complaint?

[tdiBrad]

I had a 97 D1 v8 for about 12 months (9 years ago !), and had the same problem. It was fixed under warranty (took the dealer about ten minutes), but for the life of me I cannot remember what the problem was.

I am pretty sure that it wasn't some major $$$ part that was replaced :p.

[dmdigital]

Check , clean and tighten the W plug connection on the back of the Alternator, this feeds the tacho. If it's dirty , corroded or loose you'll get these symptoms.

[BigJon]

Check , clean and tighten the W plug connection on the back of the Alternator, this feeds the tacho. If it's dirty , corroded or loose you'll get these symptoms.


X2...

[Rad97]

Gday mate had the same problem and all it was was the wire on the back of the alternator with the spade plug just put a new plug on it and that it!

[billyjack]

Thanks for comments, loose wire at rear of alternator..

[Disco_Balls]

Thanks for the tips guys!! :BigThumb:

You need:
8mm socket, small round crimp terminal and crimping tool and literally 2 mins and the problem goes away, fixed my issue before I left for work :)