dlricker

I have a 93 Z28. It will not start and if it does it has to sit atleast 30 min. but then dies after about 10 sec. Well the codes that i pulled out of it is.

36 Distributor ignition system (faulty high resolution pulse or extra low resolution pulse detected)

42 Ignition Control (IC) circuit (shorted or grounded circuit)

46 Pass-Key®II circuit

Can anyone help me diagnose my problem?
Thanks, Daniel

Injuneer

Pass key problem means the security system is preventing a start. Is the "Security" light on? Generally, that's a problem with the resistor pellet in the key.

The other two codes indicate an ignition problem. The DTC 36 Opti code may be a problem with a corroded harness connector on the Opti. Or the optical sensor in the Opti is a problem. But that won't keep the engine from starting.

The DTC 42 is very complicated and indicates a problem with the ignition system, that can involve the IC Module, the coil, or the Opti. There's a logic chart in the factory manual that steps you through the analysis to help you identify the source of the problem.

dlricker

Allright, My problem is solved. The problem was water in the 4 pin plug on the distributor. I cleaned it out, and she runs good. Thanks, Everyone