The engine shutdown is usually caused by a bad PCM. You might want to start there. As for the speedometer, there are 2 solutions. The 1996 Neon is notorious for cold solder points on the gauge cluster these cause the gauge cluster to act irradically or in most cases just fail. Sometimes it can be repaired just by reheating various points on the board with a soldering iron. If this doesn't work, he other solution is a $139 gauge cluster replacement.
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Friday, April 16th, 2021 AT 1:25 PM