Quote:
Originally Posted by bazar01
If the secondary ICU (ignition control unit) and coil work, then the problem is in the main ICU and coil circuit.
The firing signal only comes from one pin on the DME to both the main and secondary ICU. So it cannot be a missing firing signal.
It could be a bad main plug/wiring or a bad main ICU. Swap the main and secondary coils too to confirm.
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I check both plugs with my ohm meter they are both reading the identical same when I turn the key on.
So needless to say I am baffled as to how the secondary plug will start the car from either ICU yet it won't start at all wiith the main plug.
I don't know if this is all related but once it warmup the car will continue to run but the tach will go down to 0 while idling.
Any ideas?
