I thought the knowledge about the ECM being bad might help I was trying to provide some history so as to help answer my question and how I came to my conclusion. I am new to this forum and did not know I even mentioned a competitor. I thought this was a forum to for boaters to ask questions. Does this mean, I got lucky and the sensor for my engine is not NLA?
#MAG ONE CPS NOT READING SERIAL NUMBER#
When I look up the sensor for my engine serial number on, it only lists part number 892615002.
#MAG ONE CPS NOT READING SERIAL NUMBERS#
However, that appeared to be for serial numbers 0M026000 - 0M319190 which use part number 881666, was black and is NLA. I saw your posts regarding the cps no longer being made and having to replace the timing gear and cover to get the new cps to work. The mechanic is thinking the cps might be bad as well since there were no rpm showing while cranking. (They thought a sensor/IAC but could not rule anything out.) They repaired it and it is on its way back with instructions to identify the short before plugging it back in. Diagnosed as short in ground burned up the ECM. I pulled the ECM (ECM 555) and sent it for evaluation. We replaced the TPS, but still wouldn't start and could not clear the codes.
I bought a scan tool to troubleshoot, It showed high TPS. It started twice but It had very high RPM, then would not start. I took it to the shop and they replaced the head gaskets. It over heated and I shut it down and was towed in.
The head gaskets went out on my first outing. I just bought a boat with a 2002 496 Mag Base model Bravo III outdrive. I am new to this forum but wanted to reach out.
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