Engine Firing prolem

[01z71]

This problem is on a 1995 T10 Blazer. It's 4WD with a Vortec 4.3 V-6. The engine sounds like it wants to start but it will not run.

 

We have replaced the following items to try to get it fixed. Coil Pack, Firing Module, Distributor, and the computer.

 

The spark plug wires were taken off and tested and there is no fire inside them. The wires were O.K. but no spark.

 

Any ideas?

[01z71]

Well, they fixed it. It ended up being a loose wire running down the steering wheel from the ignition switch.