P0335 Chevrolet - 1996 Impala SS

Question

car failed inspection w/DTC codes, P0335,P0336,P0531,P1441,& P1663 in the computer. Have changed the opti-spark distributor,& cleared computer. Started the run cycle, but after 3rd trip check engine light came back on w/repeat codes. Not sure where to go now, need help or advice on what to do.

Answer 1

I would start by replacing the Crankshaft Position Sensor for (P0335,P0336)

 

p1663 diagnostic procedures