Hi everyone,

I have a '88 Sierra Saph Cossie and I have a annoying problem with my rev.counter.
It doesn't work ... but every once in a while it will, out of the blue, work again. If I turn the car off and on afterwards, it doesn't work again.
So, basically, it works 10% of the time ... :/

Anyone have any bright ideas ? ...

BR
Thomas

 

Check the green wire on the coil connection (-) this is the pulse for it.

Martin

 

Cheers mate ... will do that.

 

Check VERY carefully the track leading from the green wire in the connector on the clocks to the tacho, the tracks are known to break and cause on off, I've rewired from connector direct to the terminal on two different ones, worked both times 100%.
tabetha

 

I Will see if I can sort it tomorrow... Thanx alot for great advice.

 

PM'ed ..