broxma
Well-known member
The car does run. Sounds like it's running on two cylinders. Has fuel pressure, etc, all normal things have been checked and double checked. The car uses an EVO ECU of which I have two and both present with the same issue and both work in my Evo. It's not the ECU. It's not a ground. It's not a single sensor.
What it is...
My car has been dead for about 3 weeks now and I am in the process of stripping the entire ECU harness apart at this very moment. The car has presented with multiple codes which seem only partially related. These range from P0183, P0122, P0335, P0340 and then several "P0 0", "P1 2", "C1 3" which are a total mystery to me. I also get codes from the ECU for things like Fuel Temp sensor which we don't even have.
I'll start with a question which I think is at the root of it. It runs a COP ignition through the factory DSM ignitor. I swapped the ignitor with a known good. With either ignitor, the #1 and #4 coils heat up, to the point they would burn you if you left your hand on them, with the key in the on position. Not running, just the on position. What would cause the coils to heat up this way?
Second question. It is reasonable to assume that no dedicated positive wire should have zero resistance to ground? Would this be an accurate statement?
Third, could a problem in the cabin harness cause these codes at the ECU? Since the two harnesses are essentially separate from each other, and every electrical item inside the car works fine, lights, belts, headlights, gauges, everything, is it even possible for the two harnesses to affect each other in the way I have described.
For now, that is all. For the record, I posted a similar question on EvoM and have not a single response, mainly because I believe it is filled with a very small percentage of people who know anything at all and a large percentage of kids who just play bolt on racer.
thanks guys
/brox
What it is...
My car has been dead for about 3 weeks now and I am in the process of stripping the entire ECU harness apart at this very moment. The car has presented with multiple codes which seem only partially related. These range from P0183, P0122, P0335, P0340 and then several "P0 0", "P1 2", "C1 3" which are a total mystery to me. I also get codes from the ECU for things like Fuel Temp sensor which we don't even have.
I'll start with a question which I think is at the root of it. It runs a COP ignition through the factory DSM ignitor. I swapped the ignitor with a known good. With either ignitor, the #1 and #4 coils heat up, to the point they would burn you if you left your hand on them, with the key in the on position. Not running, just the on position. What would cause the coils to heat up this way?
Second question. It is reasonable to assume that no dedicated positive wire should have zero resistance to ground? Would this be an accurate statement?
Third, could a problem in the cabin harness cause these codes at the ECU? Since the two harnesses are essentially separate from each other, and every electrical item inside the car works fine, lights, belts, headlights, gauges, everything, is it even possible for the two harnesses to affect each other in the way I have described.
For now, that is all. For the record, I posted a similar question on EvoM and have not a single response, mainly because I believe it is filled with a very small percentage of people who know anything at all and a large percentage of kids who just play bolt on racer.
thanks guys
/brox