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Tachometer on 300 TDI 1995 Disco

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Tig:
Mine keeps flicking up and down (even at a constant speed) any ideas anyone?
I dont know where the tacho takes it's feed from so I'm a bit stuck.

gords:

--- Quote from: "Tig" ---I dont know where the tacho takes it's feed from so I'm a bit stuck.
--- End quote ---

It connects to the alternator - check all the wires / connectors are tight.

Budgie:
This is a common fault with the 300Tdi and as Gords said the problem is normally with the connection at the rear of the alternator.

It's either a white wire or black/white wire onto a spade connector, these connectors are not very good and you can either replace it with a new one (which for me has cured the problem for the last 5 years) or clear up the connection and try to make it tight again by crimping the spade connector a little.  :wink:

Tig:
Spot on! Thanks lads  :D

Budgie:
Glad we could help Tig.  :D

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