Spark and ignition experts I need your help

[BrianSD_42]

what does DTC stand for ?

 

[BrianSD_42]

I'd like to add that I have never gotten any codes for running rich or lean.

No codes besides the occasional CYL misfire codes that happen at once.

So nothing for days then all at once at idle: 300, 301,302,303 or 300,301,303, or 300,302,305 and very rarley a 306 is in there somewhere.

Quick update: Mechanic suspects ground wiring.

 

[runner823]

what does DTC stand for ?

diagnostic trouble code = DTC

 

[GSPRunner]

Let us know what the problem turns out to be caused by

 

[amalik]

I'd like to add that I have never gotten any codes for running rich or lean.

No codes besides the occasional CYL misfire codes that happen at once.

So nothing for days then all at once at idle: 300, 301,302,303 or 300,301,303, or 300,302,305 and very rarley a 306 is in there somewhere.

Quick update: Mechanic suspects ground wiring.

Ground wiring? Don't you have a solid Big 3 in there still?