I have a 1995 Cutlass supreme, OBD2 converted with a 97 Cutlass engine, tranny, computer and wiring. When I finished the conversion, everything work fine except for one thing, engine won't crank with the key. It crank and start, and work fine when I jump the starter solenoide, but nothing happen from the key "start" position. I brought the car at a GM dealer to have the key reprogrammed, but the tehcnician simply by-pass the security system. Few weeks ago, the police ask me an inspection for the car and they found that it start at any shifter position. I tchek the neutral safety switch and it's OK, but I could start the car even with the switch unpluged. I don't know if this problem was present before the security system was bypassed, but I think the problem come from this "backyard repair". Am I wright? How can I test that? I can't put the car back on road before this issue being fixed.
No, you have a wiring issue.
How did you check the park/neutral switch?
By the way, that bypass is not a backyard repair. Something in the changeover has caused this issue. It will take wire tracing from the ignition switch to the starter to determine the failure.
August, 26, 2012 AT 2:39 AM
I used an omhmeter and rotate the knob on the switch. The current passed on the park and neutral positions, but not on the others.
August, 26, 2012 AT 2:42 AM
Ok, then you have another issue with your wiring harness? Was it the exact year for the car?
August, 27, 2012 AT 2:54 PM
As I said, car is a 95, powertrain and computer are 97. I used all the same wiring that came with the new computer and put them back the same way they were originally. I want to make this car a collectible, so I did the job the most professionnal. I inspect all the wires and connectors before I put them back and they were all nice with no alteration or wear.
August, 27, 2012 AT 3:13 PM
In the start position, you have some sort of feed bypassing the park neutral switch. You will need to trace down the wire from the ignition switch to the starter motor.