Would a faulty ignition amplifier cause the rev counter to behave iradically
Its jumping all over the shop and sometimes doesn't work

 

what car is it on?

probably more a case of the rev counter being wanked. I owned a car that the rev counter wouldnt work for about half an hour or so, short drives it never worked.

another car i had the rev counter lied, it would read differently when it had first started working, compared to after a while. had me confused for a while until i figured that one out

 

Its a sapphire cossie 4x4

 

well the rev counter only has 3 connections, 12v, earth, and a connection to the coil negative.

It works sort of, so theres 12v and earth there, and im presuming the car runs fine so it wouldnt sending a flase signal to the rev counter.

u could check the continuity of the wires, check they arent giving eratic readings or something.

Im almost willing to bet my jam tart on it

 

I'll try that cheers

 

let me know how u get on

 

I've got the same problem aswell, funny that.

I'll take your advice safe and give it a go.

Cheers

 

you got a series 2 yeah. Theyre REALLY BAD IN THEM. One car i had the rev counter LIED for the first few minutes of running, and another one i had was dead until about half an hour of driving then it would come to life

cant see it being a lot else in an Escort Turbo