This is a dumb question but my haynes manual doesn't say or show anywhere. Where is my PCM it's a 92 f150 300 I6 I think it's on the driver side firewall.

 

Drivers side kick panel above the parking brake. It is removed through the firewall on the engine side.

Adrianspeeder

 

Thanks, thats what I thought. Would there be other syptoms of a bad PCM other than no ingnition ,no spark, anywere. my manual is pionting towards a bad pcm. low voltage at the PIP signal wire (1.5v). Measured at the connector to the distributor. Disconnect the PCM and i get correct voltage.

 

It's VERY rare for an EEC-IV PCM to go bad, so be sure you're following the test procedure precisely. It's much more common for an ignition component to die, but on a '92, it would be the coil or the PIP. The TFI module for '92-96 is as reliable as the EEC.