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Installed new AMM, '88 240 still dies right after starting 200

uid 10439's pic
posted by  UFgator on  Wed Aug 5 08:03 CST 2009
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last visit: Mon Aug 31 17:09 CST 2009
[RELATED]

Ooh, thats not good news, because Im in the same boat as you, but waiting on my new AMM to come in the mail. I'm at the end of my rope, I have no idea what else it could be.

My thought process is this - the when the AMM is plugged in, the ECU says "Alright, I've got everything I need - AMM, O2 sensor, ECT, crank sensor, etc, now I'm gonna inject fuel according to this map....." and the car stalls.

Without the AMM plugged in, the ECU says "shoot, I can't trust this stuff. Alright, now I'm gonna use THIS map..." and the car runs.

I still think a sensor may be out of range, but pulling the AMM defaults the ECU to a fuel map that doesn't use whatever other sensor is broken.

I still lean towards the problem being a different sensor, such as an O2 sensor or TPS or something, but I suppose it oculd be the ECU.

Good luck, let us know what you find!






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