1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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17,289 Posts
Welcome to Allpar.
The injectors are supplied (+) from the ASD relay on the Gn/Or wire from a splice (S100) and are grounded sequentially/individually on the (-) side per the firing order by the PCM through connector C103.
Splices and connectors are the weak links while harness rub-throughs and wire breaks/pinches can also happen.
The injector 'sync' timing signal is determined from the cam sensor. I doubt that the cam or crank sensor would pick on the #3 cylinder in particular, but would be more of a general type cylinder or injector fault code.
You want to check the Yl/Wt wire from the #3 injector terminal to the PCM terminal. If you have no test light blinking at the PCM terminal and the PCM connector terminal-to-PCM pin continuity is good, then the problem may be in the PCM itself.
A factory service manual and powertrain diagnostic procedure manuals may be useful to you here. I don't know what modifications may have been done for the supercharger installation.
The injectors are supplied (+) from the ASD relay on the Gn/Or wire from a splice (S100) and are grounded sequentially/individually on the (-) side per the firing order by the PCM through connector C103.
Splices and connectors are the weak links while harness rub-throughs and wire breaks/pinches can also happen.
The injector 'sync' timing signal is determined from the cam sensor. I doubt that the cam or crank sensor would pick on the #3 cylinder in particular, but would be more of a general type cylinder or injector fault code.
You want to check the Yl/Wt wire from the #3 injector terminal to the PCM terminal. If you have no test light blinking at the PCM terminal and the PCM connector terminal-to-PCM pin continuity is good, then the problem may be in the PCM itself.
A factory service manual and powertrain diagnostic procedure manuals may be useful to you here. I don't know what modifications may have been done for the supercharger installation.