Quote:
Originally Posted by wjdunham
I'm trying to rule out the reference sensor and speed sensor as the culprits, because I really don't want to have to try and replace those with the engine in the car :-( I'll try the fuel pump debug by jumpering/bypassing the relay, but I'm not sure my original question is answered: will the DME generate spark and fuel pulses if either one of those sensors is bad?
I know it shuts off the fuel pump if the reference sensor drops below 200 RPM, or if the reference sensor just fails. Does it also cause the spark/fuel to get shut down, or will it generate those pulses even if the sensor is dead?
Seems like it would need the sensors to get the timing of the fuel/spark pulses correct so my thought was if I'm seeing pulses then that means the sensors are OK and it's a fuel problem or a bad relay?
As a preventative measure, I've already purchases a Focus9 solid state relay...
Thanks,
Bill
|
Pretty sure you won't get spark if the sensors are bad. If you're seeing injector pulse your sensors should be good because injector pulse is signaled by the ECU which gets power from the DME relay if I recall correctly. If no signal from the DME relay to the ECU, no spark, no pulse.