Defective ignition switch or tumbler dirty or defective. Start by spraying a good electrical cleaner inside the key tumbler. Work it back and forth.
you need to disconnect the two wire spout connector shorting bar located between the battery and data link connector
Whats wrong when an 86 ford aerostar keeps trying to start after the engine is running?
you have to take off your primary cover and disconnect your jackshaft then usually there are only two bolts holding it to the inner primary remember to disconnect your battery before you start this job
clean the battery terminals with baking soda and water. them jump it
check for loose connections
No, you do not have to disconnect the battery. Just do not start the engine with the charger connected unless the charger is built for starting purposes.
It depends on what you trying to do. If disconnect battery and reconnect it the immobilizer activates automatically. So you will not be able to start the car with key with chip.
you need to disconnect the two wire spout connector shorting bar located between the battery and data link connector
you have corroded battery cable connector feel for heat when trying to start the bad cable will get hot or smoke
Whats wrong when an 86 ford aerostar keeps trying to start after the engine is running?
Start the car and while it is running, disconnect the positive cable from the battery. If the car stalls, the alternator is bad.
disconnect battery cables
Replace the ECM.
It could be the voltage regulator.
disconnect the positive connector on the battery
Not it it is a good battery. I suggest if you are going to let it set for an entire winter, disconnect the positive battery cable. It should be fine if it is a good battery that is fully charged. You might want to put a charger on it next spring just before trying to start the engine after you reconnect the positive cable.
More than likely no. But it depends on a few things. Give it a try. Start it and then disconnect the battery.