Hi guys i know this has been covered a few times i am trying to get mine working with the coil pack on gotech , i have piggybacked into the wires on the coil pack (2outer wires) with the dioads as the picture i found on here but the car misses and pops on idle when they are wired in ? Any ideas ? Cheers

 

Wired the diodes backwards?

 

No i dont think so i double checked that and the seem to match how the diagram is

 

I tried this to get my rev counter working after going Zetec as it only reads around half revs. May be i used the wrong type diodes or somethin but the car wouldnt even start with them connected!


Not sure how people have made this work, would be intersted to find out

 

I adjusted the pot on the rev counter itself (strip the clocks down, pot lives on the top at the back of the tacho unit). Pain to strip and get to but my circuit similar to above didnt work either.

 

How do you know what way or how much to adjust it by?

 

By following the diagram

It definitely works, I've used it on several cars.

2x 1N4004
1x 1N4744 (Zener)

The only reason it would missfire is if one or more of the diodes were the wrong way round.

Like this, but without the big blue pullup resistor:



All of the stripes on the diodes face each other. Green wire in the pic is connected to the 1N4744 Zener and goes off to the tacho (original bullet connector retained for ease of install, make the join near the EDIS). Tail of each 1N4004 diode go to one coil each (piggyback one to the cable on pin 10 of the EDIS and one to pin 12). Ignore the blue pullup resistor it's not required.

Lee

 

Im surei had it wired that way but dont know what value diodes i was using tbh so will have another crack at it!


Cheers

 

I will give it another bash when im home from work see how it goes , i piggybacked them at the coil pack connection as my ecu is inside the car but i dont see why that would make any difference 👍