My number 4 injector is not firing and has no injector pulse. The ground to the injector harness seems to be the problem. Where should I begin testing?

 

computer is bad.

 

Have you checked to make sure you don't have a melted wiring harness? It's a notorious problem with the early 4 gens.

 

Yes, sir check that harness. Yes, the driver in the PCM may be bad BUT because the driver circuit stayed grounded. DOn't run the new PCM until you make sure. You'll kill that one too.

HUGE thread here with pics. You'll see a few posts by yours truly in there somewhere.

http://forum.chryslerminivan.net/sho...wiring+harness