Having problems with your 1989 Ford Bronco ?

1989 ford bronco full size 5.8 L V8 I tried to start it... the starter didnt stop turning and kept going even when i took the key out.. wouldnt stop and went until it killed my battery

Posted / edited by AnonymousUser on : 12-11-2018

Answers :

Just answered identical problem in another make of vehicle. There are 2 possibilities for your problem. A bad Keyswitch and/or a bad Starter Solenoid. I assume your Bronco did not start, which is a good thing. You could have damaged the teeth on the flywheel if the engine started.
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\012You may need to replace the Keyswitch. It is suppose to send a signal to the "tickler" wires on the Solenoid, connecting the Battery to the Starter. Either the Keyswitch shorted and continued to power the Solenoid, or the Solenoid shorted and Welded a connection after the Keyswitch was turned OFF.
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\012Remove the small wires to the Solenoid. If the Solenoid is welded internally, the Battery will spark when you try to connect the Battery cables and the Starter will spin. This would mean the Keyswitch may still be good, do not reattach the small wires yet.
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\012You would need a testlight or Voltmeter to test each small "tickler" wire by attaching the testlight to a Ground and the other end to the tickler wire. When you turn the Key to Start, the light should Glow. It should not Glow all the time.
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\012My advice is to replace both the Keyswitch and the Solenoid because of the wear they encountered with the malfunction. Then when you get the Bronco to start, go to Autozone or Oreillys for a Starter draw test to see if the Starter was damaged by your other problems. Both of those Parts stores test and scan for free.
DISSCONECT CRANK SIGNAL WIRE TO STARTER SOLENOID, IF STOPS IGNITION SWITCH OR WIRING BAD IF STILL CRANKS SOLENOID BAD
Repair Help & Product Troubleshooting for 1989 Ford Bronco

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