Pulsing Tacho Signal.
 

Hi folks, got my tacho working now on my 1.8 mk1 with MS1 V3 ....big thanks to Joe P etc..

I have done all the mods to the MS1 board including the fan and tacho circuit...

I have a little problem in that the tacho pulses a bit...basically the needle jumps about 250rpm backward and forwards at any rpm. So at, say 2000 rpm it bounces to 2250 back to 1850 the same happens at any other rpm area....bit wierd,,,,,

Not sure if I need to do anything else to my tacho circuit to clean the signal up a bit...

any ideas chaps

Hello folks, still haven,t sorted this problem out.....has anybody got any ideas/

Cheers