i have swapped the clocks with known good ones, but still nothing.

someone told me its the green wire on the coil, but the car dont have a coil.

i have also been told that the green wire on the edis module goes to the green wire at the back of the rev counter, so i cut the wire by the module and then connected it to the cut green wire at the clocks. the car runs very lumpy with this and the rev counter still dont work so i put it back to how it was.

any help would be great.

 

What set of clocks are you using?

The EFi ones are different due to the coil pack.

If memory serves me right, they run 1/2 signal or something similar.

normal CVH ones will not work.

 

i am using efi clocks.

 

First of all, you surely have a coil or coils. If it's a escort with efi, then the coils are in the coil-pack that is sitting at the end of the cylinder head. The efi clocks need the coil signal to the rev counter's green signal wire. So, just pick one of the two coil wires. And don't go cutting any wires if you need to tap into a line!!!

 

Hey.You have a small black box between the coil and the counter. It makes the signal. If it isn't or wrong, the counter isn't work. This little box is in the EFI,Xr3i and RS and other.I haven't a picture from it now, but i take a picture soon if need.

 

Congratulations for cutting off the supply to 2 of your spark plugs

The rev counter signal wire does indeed go to the coil packs, but if its a MK4 loom you have there is a supressor over by the edis module. Check its present/connected up

 

what is the little box on top of the coil pack? (is that what its called, where the ht leads fit onto?)

there appears to be a 2 pin plug on it, but mine only has 1 wire...

 

radio interference supressor.

 

so wheres the surpressor you mean?

colour? size? shape etc...

thanks

 

Hanging from the wiring running to the EDIS module, it will have green wires. The supressors themselves vary quite a bit in appearance.

 

just been to have a look at the engine.

there is one multi plug on the coil back with 3 wires. they dissapear into the loom with nothing visable in between.

had a look for the surpressor. the only thing i could find was a small black thing which looks like a fuse holder only it dont have a fuse. there is a thick red wire and a thick green wire going in/coming out. after about 3 cms, there is a 2 pin plug with green wires on the other side to the thick red and green wires.

is that it?

if so, what next.

thanks for your help...

 

Can you get a picture at all?

 

this on the passenger side...

 

well, well, well.

i disconneected that small block at lunch and bridged the gap, and hey presto, the rev counter is now working!

 

Thats the puppy!

Suppressor is obviously gone, best to run one if you can but you won't cause any damage without one, might get some eratics readings/spurious signal though

 

i noticed it 'jump' slightly earlier. went fron 2700 ish to 3000 rpm quite quickly, but then later, it was smooth again.

what cars do these surpressors come on.i'll raid the scrappys.

 

pretty much anything to be honest, they vary quite a bit in appearance but they all do the same job.

 

Ive got my s2 running efi on ofab, ive done the pin 11 on the edis, the rev counter moves when turning it over to start but once the engine is running its dead, really annoying