Just for the info, my diff information is written on a plate on one of the bolts holding the back of the diff on, at the bottom.....

 

I had a similar issue with my tacho once, there is a little diode that is supposed to be soldered into the trigger line (usually green) that is like a one way valve for electricity, stops the jumping by only allowing the single pulse from the dizzy as opposed to copping the pulse it's supposed to be getting and a "feedback" pulse of sorts......

 

Have a chat with a friendly old auto electrician or auto parts store owner, he might let you crack open the pack on a brand new tacho to have a look at what diode you need, these diodes are readily available from Dick Smiths and Jay Car. *And cost SFA*

 

Good luck :dance:

Edited April 21, 201016 yr by Toy-Yoda

jono I had a look at the diff but the only writing I saw was borg warner. Oh well

 

Getting the jumping sorted sounds like to much of a hassle. I'll just love it as it is.

 

It's been a mission putting the tacho in where the clock goes :dance:

Edited April 21, 201016 yr by flamingheads

Seriously, it's a 5 minute fix.....

Seriously, it's a 5 minute fix.....

 

And as I suggested before opening up your points a tad more will probably stop the jumping too....... which funnily enough would also only take 5 minutes.

 

Was the "Borg warner" on a little metal tag as jono pictured? If not double check the tag.

I think he means this part.....

 

 

The one that i picture before, i couldn't see...i only saw it cause i undid the bolt and the plate fell off, cleaned it up with a wire brush and saw all the numbers.....

Edited April 22, 201016 yr by jono1986

That was the borg warner thing I saw. There didn't seem to be a plate or anything where you circled, it's just flat metal.

I'll look at the points tomorrow. I just had a massive pain getting the tacho in and it ended up not looking so good. I need to just enjoy driving the car for a bit so I don't feel like kamikazing it off a cliff. I'm sure we all know the feeling.