Coil issue help

[99casst]

Hi got home last night car running fine started today and it was running on not all cylinders. So I cleaned plugs and check coil to find number 3 was not working so I checked to see if it was coil so swap num 2 with it and sAme issue so I no it's not coil. Changed ifs throtle and maf to no hope also checked all wires back to bulk and changed ecu. Any sugestions people many thanks

[CJ]

I assume this is the case but you checked / replaced the ignition leads, right? Any errors from a diagnostic check?

CJ

[escu_calin]

**** it was running on not all cylinders. ****

is important to find out if both served cylinders are affected (cos a coil serves 2 spark plugs)

easy to see...
just run the engine with all leads and plugs connected for a few seconds... hear the sound it makes .. keep it in your cache for a while; then disconnect the affected coil completely and run the engine again .. the outcomes are:

1) the sound changes in worst and a second cylinder does not receive spark if only one does not work than is a dead plug lead.
2) the sound stays the same if both affected cylinders don't work you must go lower on the electric circuit (leads from coils to ecu , connectors)

for point 2 see the electrical wiring in the download section

cheers

[99casst]

hi yes both cylinders r not firing front and rear i read few cases on this one being my simular issue was a low pulse reading but who knows. as for leads and that yes everything im starting to think it is electrical just where . i not done a dionostic because no engine code dont feel it will frow much but i think its a case take it to electrician it past my hands i look at manual in downloads and it got may thing it could be to do with input lot thow i ruled out.

[99casst]

Hi guys I'm back I sorted this issue for a little while but it's back I had it fully tested and he said the ecu was not giving a feedback. So I changed ecu it still did it till I took it up the road and now it's back. This time thow I'm getting injected system crank sensor and cam sensor codes. Now I read some where that one the crank or cam sensor operates the fuel and the spark what I am asking is it possible for a sensor to be faulty. E.g that it could prevent that coil from sparking o would it not let ever work. I was told by mitsi that the evo have a issue with the crank thrust bearings witch can effect the ignition has any one else exsperienced this problem thanks tom

[witcher]

it is possible for the sensors to be faulty. and yes this may influence the ecu. In your case the Crank position sensor may be faulty. I truly do not know enough about FTO engine management yet (did not have this problem so far) to be of any help (especially over the net) but here is the link to useful read how the stuff works:
http://www.emeraldm3d.com/ems.htm
This may not solve your particular problem, but it is good thing to know anyway.

[99casst]

Thanks for that I will have a read. Today I put a diff on on started nice the way it should but there was a rattle from the crank so left it running problem ercured again and cut out after it did this it did not star again just back fire played around with the crank rotor blade and pintch it to sprocket and I started nice again but hen afeter a few min did same thing. But rattle did quieten I think the sorcenof problem lays round this does any body no how fi a new one if the old one has snap out pins thanks tom

[witcher]

check this:
http://www.camskill.co.uk/products.php?plid=m3b0s9p8274
I think this one is the source of your problems, anyway I would also check Crank Position Sensor:
http://www.camskill.co.uk/products.php?plid=m3b0s9p1452

[99casst]

Thanks but actullt Mitsubishi gave me a price on that they want £5 lol and I am 99% shore this is case now as it ran fine with a noise coming from the crank sprocket put it on ground again and it hunted then it went down on cylinders again. My car is bassically doing the old retard thing again like the dizzy do.