neil350

I get the same code with my 93 but only on start up when it does the test, goes away after that. Never stays on.

mat89RS

I plugged the ground since it was not even connected, still no go.

I checked for bent pins, no bent pins, no damage wires.


Can someone look into the service manual and tell me what to check next ?


Thanks

shoebox

Didn't think the ground was going to do anything.

Did you electrically check the wire from the ecm to the knock sensor for continuity? Also check the wire for a ground when it is unplugged from both ends.

Did you check the pin at the back of the ecm for voltage.

That is all that is left that you can do.

mat89RS

I did check the continuity one the wire, it's good, I checked also voltage at the ecm and there's nothing, well 0.14volt.

Do you think this looks like a faulty ECM ??

I'm thinking about getting a new wiring harness for it since the engine runs and I would find it really weird if only does 2 circuit are damage on the ecm.

mat89RS

Can I use a wiring and ECM from a 93 LT1 with manual tranny ? swap the prom or something.

Matt