I'm using a Sagem twin ignition coil (supplied by QED) managed by MBE 956e..The model number seems to be BAE04 although there is another number on the side of the unit which reads "240 7".
Now basically I'm wanting to cure a misfire before I take the engine out for some *extra* work and I have traced it down to not firing on cylinders 2 and 3, which appears to be controlled by the second of the two coils.
My multimeter cables dont reach from the 956e ECU loom connector to where the coil multiplug is, I dont want to frig around with the wiring so I was wondering if anyone knows what pin does what at the coil? There are three connections, I'm guessing that two of those are controls for each coil and the other is common return to the ECU?
What I want to diagnose is whether I need to replace the coil pack or trace the problem back to the ECU/wiring loom (hope its not either of those things!)
Originally posted by Chris_H42 Not knowing the exact coils but I am assuming you have twin coils. By that I mean you have a coil pack with 2 ht connections on each coil?
If so then one coil is for 1 and 3, the other for 2 and 4. If its wasted spark then its this way for sure.
Basically its one whole unit, from looking underneath you can see each coil (in the moulding) the first being directly below connections for cylinders 1 and 4 and the other being directly below 2 and 3.
I'm too hot on how the coil works, i.e. wasted spark. I was under the impression that basically there are two coils, A and B. And that A powers cylinders 1 and 4 and B powers 2 and 3...the latter being the ones that aren't firing currently.
Once I know which connection pin does what I can start messing about with a supply to determine for sure if the coil pack is broken.
I've just been doing a bit of reasearch into the model of my coil pack (hoping that I will only need to replace that) and it seems Sagem Automotive no longer exists *eek*.
Infortunately the unit is totally fixed, as soon as I know which pin does what I'll find a suitable supply for the coil which I suspect isn't working just to confirm thats the case. The wiring harness itself is a 4 pin "sure-seal" connector of which only 3 pins are actually connected...
not wanting to feck about with the wiring either, look at the ecu settings as AL used a coilpack setup, found it was firing on 2 and thats cos the ecu had a dizzydrive selected. easy to change if it is that, its a drop down box.
(or was it the other way round...hey AL whats the crack?)
yeah....when i installed mine it was supposed to come setup for dizzy.Couldnt start the car...only firing on 1 and 4.Its easy to change round if youve got the software but i just nipped down to the scrappy a paid £30?? for a coil pack off a Cav valver.Plugged it into the loom and that was that
Ive checked the ECU to ignition coil wiring, turns out that the coil is receiving both ignition drives as the engine turns over. So after checking the coil by poking my own special 12V supply up each input I only get an HT output for one, I'll be ordering a new ignition coil tomorrow *sigh*.