1987 Dodge Dakota LE 6 Cyl 3.90L
why does the ignition energize for a second and then shut off
my 87 dakota truck started ran for a few seconds then shut off. i changed the auto shut off relay,but no response the primary ignition energizes for a second then deenergizes. i jumped a wire to the primary ignition and had power to the fuel pump but no secondary ignition spark. maybe bad coil?
Any applicable trouble codes? Are you saying the starter motor will crank for a couple seconds, then nothing? Did you check for primary voltage at the ignition coil, engine cranking? What de-energizes? You can have an initial prime, no crank, only for a few seconds, after that if no rpm signal, you get nothing. I haven't looked at your wiring yet.