M30 running on 3 Cylinders !!! help

[Rustam]

fool-proof test would be an option if the OEM chip didnt fix the problem. but I was going to ask would a bad injector coil call the ECU?

also I wan't to know which relay triggers the "alternator magnatic field" terminal?

I feel that there is some relationship ... since when I manually trigger it the engine runs into 3 cylinders, so it's not the 2K rpm limit, its the magnatic field terminal that starts when I rev over 2K RPM.

So I take it at this point you have not checked electrical connections with ECU?

I'm sorry - I dont know what you mean when you mention a relay that triggers "alternator magnetic" field... In theory there is no reason to turn on magnwetic field of the laternator since its used as a generator not as electric motor. If we expected to have it turn on its own by application of electricity we would have something to trigger its magnetic field... So I am quite puzzled by your message there...

There is one relay that I can see here in schematics that participates in transfer of electricity from alternator - unloader relay... Unloader relay is located in front power distribution box - right before the windshield on driver's side...

You must provide a bit more detail on what you do and what you do it with... For instance I have hard time understanding the meaning "i trigger it" - what do you trigger? and how do you perform this triggering process?

The alternator has only two terminals - for provision of electric potential - they have nothing to do with triggering magnetic fields. Perhaps you meat a "starter" instead of "alternator"? The terminal being the one on the solenoid which does use magnetic field to push starter gear???????

The "starter relay" engages magnetic field of the starter solenoid. It is located in same box as the unloader relay mentioned above. Looking from driver's side towards passenger's the relay is second from left right by the file of fuses...

I'm very puzzled by this post

Now regarding bad injector coil - Its possible that bad injector coil like everything else being observed by ECU would provide you with some message. Now question is - is it possible to have bad injector coil under your circumstances? Rather unlikely - the coils are inside stamped body unable to be accessed by any moving body, and made to withstand vibration! So chances of having the coil connection "slip" are next to impossible. Of course the coil can burn out technically speaking - but how much electricity does your ECU have to provide for that? Much more than it is capable of...

You should check all the connections to ECU for short circuits as I mentioned - that shall be your first step.