Changes by last author:
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| I think that this trigger does not regains synk after a false trigger. I had the car die several times when hitting the revlimiter on the dyno. The ECU seemed happy while the rpm fell to zero. Cycling the ignition during this time makes the engine catch again. |
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The "lost sync" issue is solved and the car runs fine, the trigger sensor developed an intermittent fault which became more apparent with time. It was quite consistent at the end, the trigger sensor seemed to lock up and stay high until the next tooth arrived, it then went low and sent out a short pulse again. The total number of teeth per turn stayed the same but everything moved.
The wierd thing is that the stock ECU runs fine when the trigger sensor is acting up, I guess that it's common enough for them to have made a workaround. It is possible that changing the trigger edge could make the car work better when the trigger occur or that the error detection could be improved by activating the filters, but the car runs now and the error is not something that you can miss. |
| Thanks for testing it, I will try to recreate it enough times to be able to strobe and scope the engine while it happens. As it only happens once in a while when hitting the revlimiter it's not easy. -Jörgen |