Question about 1991 Ford F150

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Ignition tumbler 1991 ford f 150

Got in a hurry and did not disconnect the battery when replacng igniton tumbler. shorted out something, have replaced igniton switch, but still wont turn over and all electrcal is on all the time, just like key is on. also door locks have power on all the time.

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  • Chuck Martin
    Chuck Martin May 11, 2010

    when u say u replaced ignition switch do u mean the actual electrical part or just the lock cylinder? If just the lock cylinder u may have shorted out the actual ignition switch.



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  • Ford Master
  • 443 Answers

Sounds like you have shorted out the solonoid .. just a thought it would stay on if shorted inside and leaving power to other things that would normally work when the key is on ...

Posted on Feb 05, 2009


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Why will my 1991 ford f 150 key not stay in start position

No ignition key is designed to stay in START position. The key tumbler is equipped with a spring that will bring the key back to ON position once you release the key after starting. If you mean that it does not stay in ON position, then the tumbler may overshoot it's position. Try spraying some anti-rust or Wd40 into the key hole and insert key and turn the key from left to right a few time. If it does not work, you may have to get an auto electrician to look at the electrical switch that is attached to the back of the key tumbler.

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I had this same problem, your ignition tumbler is probably broken,Its been a long time since i owned it though.But if I remember correctly you need to look directly under the Tumbler in the plastic cover, you should see a hole about the diameter of a phillips screwdriver.There is a retainer pin in there, you will need to depress it with a small phillips screwdriver or a small punch. while you have pressure against the pin,you should be able to pull the tumbler out. new one will come with keys.good luck! Dale

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Does it just kill like you shut the key off ?
If so I would say you have a loose wire or shorting wire in the ignition , that when you turn the steering wheel to the right( the side the igniton tumbler is on) it is catching a wire or shorting.
Please let me know what you find.

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sounds like key tumbler broken internally , disconnect coil to stop engine and disconnect battery to stop battery drain til problem fixed, may have to jiggle key and tumbler til it releases key ,

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Whoa....first, the ignition swith is not a part of the tumbler. you went in to far. replace the switch and put the brass gear on the tumbler. slide the tumbler out and install the keeper. the tumbler needs to be in the "on" position..

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