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r34 non turbo neo automatic

Code 21 MIL ... intermittant , constant then miss fire

Replaced coil pack closest to CAS num1, or 6 i think it is

Light went off car works fine

Problem " A COILPACK WILL NOT CASUE ENGINE MIL" Says my head nechanic and several qualified mechanics and a import specialist

Im now chasing a problem that doesnt exist lol

So ign system will obviosly be linked to several sensors

r34 workshop manual not very helpful .............

i need flow chart or data of what is linked to the system and the voltages they need to be within

I have been told possible ign sinal from barrell staying on after start.

IM a second year apprentice and have tools and a little bit of know how around checking signals and i have pin in and out ecu diagram

can anyone help ... the car is fine and working but apparently it shoudnt be ......

i have stumped alot of people and no one wants to go near this ...... is annoying casue the car is fine and working .... but the problem shouldnt technicly be gone !!

Thanks guys hope were all having a good weekend

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