1993 dodge dakota 4*4 V-8 trouble codes are in order as the engine light lit up on the dash
12
27
15
55 any idea I have a intermittant miss that sets the eninge light when it happens, secdondary ignition has been replaced
12= Standby memory power lost
27= PCM to injector failure
15 = No VSS reference
55 = Completion of fault code display
With the given codes and the way it is running I would say that you are having either a issue with the PCM ground and or the main connector to the PCM. Intermittent failure in the plug would cause these cascade codes with a misfire.
I would inspect the plug and make sure there is a good verifiable ground from the cab to the frame even to the transmission itself. The cabs of these trucks have notoriously bad grounding. Best to establish a new one rather than chase the old one and assume it is ok. Small gauge wire with terminals will suffice.
You may also be noticing that the volt and temp gauges go up and down slightly with the turn signal when it is activated? Radio may also freak out at louder volume settings if the ground in the cab is compromised.
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