Possible faulty AMM. Unplug the AMM and try restarting in 'limp home' mode. Engine will run using a pre-programmed fuel trim. Should idle not too bad, but be weak on acceleration almost to the point of being governed. The most common cause of AMM death is continual hot air intake through the corrugated aluminum preheat hose off the exhaust shroud allowed by a faulty air box thermostat. Consider permanently disconnecting the preheat hose off the exhaust shroud to prevent the AMM from cooking when (not if) the airbox thermostat fails. If you're subject to inspection, remove the air box thermostat and screw the air diverter flap shut from inside the airbox, out of sight of the inspectors. Airbox thermostat checking and replacement was part of scheduled dealer service. They're not that cheap and the preheat function serves little practical purpose except in extreme cold conditions, so not worth the cost and effort. Good AMMs are getting harder to find, so why waste them unnecessarily.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now