need help no spark zetec

r1zetec · Post by **r1zetec** » Sat Aug 04, 2007 5:57 pm

i have put all megajolt system into a mk2 fiesta i took out of a mk1 mondeo that was running a 2l zetec and was running i stripped all out including edis and put it all in the only thing i had to change is the big connectors mondeo has 3 the fiesta has 1 so i labeled it all up and put and changed it to 1 now its all plugged up and i cant get spark why??????? any help cheers

been at it for 4 hours scratchin my head

MartinM · Post by **MartinM** » Sat Aug 04, 2007 6:55 pm

...the only thing i had to change is the big connectors mondeo has 3 the fiesta has 1 ...

Can you explain what you mean by that?

Have you checked all the obvious voltages with a meter?

You could try reversing the wires on the VR sensor - one way round will work, the other way won't

r1zetec · Post by **r1zetec** » Sat Aug 04, 2007 9:47 pm

the 3 main car plugs on the mondeo that plugs in to car loom there is opnly 1 on the fiesta and what do you mean by the 2 wires do you mean the crank sensor if so i took the crank sensor out of the mondeo that was running and put in mine will changin wires round do anythin as it was running also checked there is power to edis

MartinM · Post by **MartinM** » Sat Aug 04, 2007 11:24 pm

OK....so starting from the basics to get a spark from the EDIS components alone....

- 36-1 trigger wheel on crank (or use the flywheel 36-1 "webbing" on a Zetec flywheel)
- VR sensor pointing at trigger wheel 1-2mm gap
- crank/VR sensor to EDIS pins 5 and 6 (match the colours or try both ways)
- screen of VR cable (if you have one) to EDIS pin 7
- +12v to EDIS pin 8
- earth to EDIS pin 7
- one coil outer pin to EDIS pin 10
- the other coil outer to pin EDIS pin 12
- centre coil connector to +12v
- plug leads from coil towers to plugs

That's it.

Check all wiring, check all pins are actually making contact to the EDIS module, and put just one plug on a plug lead and lay it on top of the engine so that the body is earthed.

You should get a very healthy spark with just this setup. It does all work - millions of Ford Escorts and Fiestas can't be wrong.

PS Just had a thought - I didn't know that the Mondeo EDIS module was suitable...sounds a bit modern to me. Are you really sure it's an EDIS4? - it should say on the white sticker on it - like the picture on current eBay listing 220137067431

r1zetec · Post by **r1zetec** » Sat Aug 04, 2007 11:34 pm

its 100% edis 4 the mondeo was running a 2l zetec with megajolt and r1 carbs and i wanted it all in my mk 2 fiesta it was up and running in the mondeo and i took everything off but had to rewire it into my existing car loom and now cant get spark its really pi##ing me off will be out checking wires tomorrow