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Discussion Starter #1 (Edited)
Hello Fellow prelude fans, got a 91 prelude (2.1L, Auto) with ~130K miles. Had an issue with an alternator failure. After putting in a new one, car ran fine for about a week. Stopped at an intersection one day and the engine just died, car would not restart. Pushed it roadside and tried to start it next morning, car started fine, and runs well. However it appears to be flashing a code 13 (or 31?), which indicates an atmospheric pressure sensor? Tried to disconnect power and recheck, still have the error code. Would a bad atmospheric pressure sensor cause the car to shut down? Will the ECM need to be replaced, if the sensor is a part of it? Is there a way to rig the sensor so that the car will still run without shutting down? Could I have left something unplugged while swapping the alternator? Thks for your help...
Update: Above condition was from 2 years ago..car had been sitting in garage unused. when I checked code now, 13 seems to have dissapeared, code now shows 4, which is the crank position sensor. Appreciate any suggestions....thanks
 

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Memento Mori
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The atmospheric pressure sensor (PA sensor) shouldn't cause the car to stall. The crank sensor is the more likely culprit. Check page 263 of the Online Manual for the test procedure.
 
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