Vehicle & Technical > Discovery

My rev counter's gone mad. I'm now tickng over at 1500rpm and driving at 1000rpm

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auf_wiedersehen_pet:

--- Quote from: Range Rover Blues on April 14, 2009, 15:43:26 ---Possibly a wire that's corroded in the terminal then, are any of them crimped?

--- End quote ---

By "crimped" do you mean the aftermarket plastic ones. All of mine are standard LR.

Range Rover Blues:
Yes that's what I meant.  It might still be worth checking that the wire is secure n the terminal but usually I find they are more reliable than the aftermarket connectors.

stageonesimmo:
This is what I had with mine - an original connector on the white/grey wire at the 'W' terminal had gone - the wire core had snapped just behind the crimp that holds the insulation on the wire and the insulation had hardened so it looked fine with no movement - it wasnt untill I applied pressure along the wire (to lengthen/shorten it) that I was able to match the movement to the tacho's odd behaviour (needs 2 folk to do).  I soldered on a new connector with cover and all has been well since..........

auf_wiedersehen_pet:

--- Quote from: stageonesimmo on April 18, 2009, 09:58:32 ---This is what I had with mine - an original connector on the white/grey wire at the 'W' terminal had gone - the wire core had snapped just behind the crimp that holds the insulation on the wire and the insulation had hardened so it looked fine with no movement - it wasnt untill I applied pressure along the wire (to lengthen/shorten it) that I was able to match the movement to the tacho's odd behaviour (needs 2 folk to do).  I soldered on a new connector with cover and all has been well since..........

--- End quote ---

Coincidentaly, the litle free booklet with this months LRO; Land Rover Troubleshooter says...

Tachometer Fluctuations (Tdi)
The rev counter uses a signal supplied from the alternator W-terminal. Check connections for corrosion and check the eyelet on the connected suppressor is not shorting to earth.

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