Tried to fix bouncing tacho with a tachofix but now nothing
Posted: Tue Aug 13, 2013 8:36 pm
Hi,
Rover v8 engne with Megajolt, rev counter is a cai (part of Smiths range) Eclipse analogue tacho.
The rev counter was working fine and smooth up to about 3500 revs when it would suddenly start bouncing so i have bought a tachfix to try to solve the problem, with this connected the tacho needle jumps when i switch ignition but when i start the engine nothing happens at all.
To clarify,
My tacho has wiring as described in the manual
Green, lgnition power source
Black Ground and sensor wire
White/black tacho output ECU or W terminal on alternator but not both
Red/blue contact breaker (low tension side of coil)
White/red Dash lamp power
Brown/slate Tacho hourmeter only
The tachfix has the following wires,
Red/blue Live
Yellow, I have tried connecting this to both white/black and the red/blue without success
Black/grey Earth
Blue Number 2 pin on EDIS
I was advised to cut the white wire from the coilpacks which went into the black/white in the tacho when fitting the tachfix and connecting this to the yellow on the tachfix,
Please can anybody tell me why the tachfix is not working
Rover v8 engne with Megajolt, rev counter is a cai (part of Smiths range) Eclipse analogue tacho.
The rev counter was working fine and smooth up to about 3500 revs when it would suddenly start bouncing so i have bought a tachfix to try to solve the problem, with this connected the tacho needle jumps when i switch ignition but when i start the engine nothing happens at all.
To clarify,
My tacho has wiring as described in the manual
Green, lgnition power source
Black Ground and sensor wire
White/black tacho output ECU or W terminal on alternator but not both
Red/blue contact breaker (low tension side of coil)
White/red Dash lamp power
Brown/slate Tacho hourmeter only
The tachfix has the following wires,
Red/blue Live
Yellow, I have tried connecting this to both white/black and the red/blue without success
Black/grey Earth
Blue Number 2 pin on EDIS
I was advised to cut the white wire from the coilpacks which went into the black/white in the tacho when fitting the tachfix and connecting this to the yellow on the tachfix,
Please can anybody tell me why the tachfix is not working