The 311 is vehicle speed sensor (VSS), not crank sensor (CPS) code. How's your speedo/odo/ABS?
Anyhow, beginning in '92, the fuel ecu will cut injector signal (cut fuel) on decel with no pedal (TPS in idle mode) after VSS has determined you've been driving on the road. If your VSS is intermittent, as can happen when the wires at the differential-mounted VSS rot away, there's the chance it will stall.
My experience with the CPS is exactly opposite to porkface's whom I respect -- having had an out-of-box OE sensor failure and decent long-lasting $12 aftermarket units. So it goes.
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Art Benstein near Baltimore
Eat, drink, and be thoughtful.
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