Question about 1990 Ford F150

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1990 f 150 continues to run after removing key. starter runs while truck runs. must disconnect battery to kill motor. no key, hook up battery and motors only turns over.

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  • newmandavidl Jul 29, 2009

    i have recvd the same advice from others and also been told there was a spring loaded rod connecting the ignition and an "ignition module" under the steering column. any ideas about this thought?

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Sound like your ignition switch is bad, this sends positive power to the starter solenoid when you turn the key to "start." Usually located around the steering column.

Posted on Jul 29, 2009

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  • Contributor
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Replace ignicion

Posted on Jul 29, 2009

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1 Answer

My starter won't stop running after the car startswhat causes this


I need to know year--make--model?
Sometimes you can take starter motor off, lay in on the ground, hook up jumper cables properly from starter motor to battery, at the least, it should kick out drive gear and spin. When cables are removed the drive gear should retract. Could be something wrong with starter? It could be hung-up on flywheel for some reason? Could be a problem with ignition switch?
Usually two voltage circuits to starter motor, one comes from battery, hot all the time. The other circuit goes hot with key in the start position. The start position should be spring loaded, when you release the key, it should spring back to run position, so that circuit, at starter motor, is no longer hot.

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Turn key. starter engages flywheel engine start to turn over. Then starter disengages form flywheel but continues to spin without care actually starting.


There maybe a problem with starter motor? Some of the national brand auto stores will test starter for you. Of course, you have to take it off and take it to them.


You could take the starter off, lay it on the ground, Hook up jumper cables properly from starter to battery. The starter should kick-out the drive gear and spin. If starter drive gear kicks out and in, something is wrong. Anymore I replace starter solenoid and starter motor as an assembly.

It wouldn't hurt anything to check flywheel teeth while your at it.

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For ranger new starter wont stop running


Starter Relay The starter motor solenoid relay switch (11450) consists of a pull-in coil, a contact disc, and two terminal contacts. Battery voltage is always present at the relay positive terminal. When the ignition switch (11572) is in the START position, the pull-in coil is activated and pulls the contact disc into contact with both terminal contacts. This allows battery current to pass through the starter motor solenoid relay switch to the starter solenoid (11390). The starter solenoid is deactivated when the ignition switch is in the RUN or OFF position.
Maybe something is hooked up wrong ! Or the starter relay is bad
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When i turn key off it continues to try and start and eventually runs battery down


Jeffs solution (above) is for a different problem. If the Starter Motor continues to turn with the Ign. Sw. off, yours won't be a Starter Motor problem. However, the most likely cause is either the wire to the Starter Solinoid or the Solinoid itself.

I can't see the alternator being the cause either, as suggested above.
.
Try this
Disconnect the thin wire from the Solinoid (this is the one that activates the Starter when you turn the key).
With the battery charged, the Starter shouldn't work. Put the wire back and try again. If the same problem is there, quickly remove the wire.
One of 2 things will happen:-
1: The Starter will stop. The cause is in the wire to the Ign. Sw. or the Ign. Sw.
2: The Starter will continue turning. Repair or replace the Solinoid.

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Sounds like a flat or faulty battery. Try getting a jump-start from another vehicle. The clicking is probably from the starter relay.
The relay operates with a click switching the power through to the starter motor. If the battery is low, the starter motor draws so much current that it effectively short circuits the starter relay which releases.
Now the starter motor is disconnected, there is enough current to re-operate the relay, another click, and the starter motor is reconnected and short circuits the relay again etc. This clicking continues until the battery runs completely flat or you stop turning your key.

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Starter continues to run after engine starts. Only way to stop it is to disconnect battery cable. I've already replaced the starter/solenoid. Is there a relay somewhere that may be getting...


It has a ign. switch usally on the steering colum I would say it is going bad. Does it do it every time? Does it try and kick back in when you hook the battery back up when it is running? It's possible it is sticking in the flywheel but if it quits by un-hooking the battery I would bet on the Ign.switch not the key switch.

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2 Answers

MOTOR OPERTAES WITHOUT KEY


your starter,solenoid or ignition is no good. but my first choice,i think your solenoid is shorted because when you hook up the battery,it cranks but does not start.that means your ignition switch is still working.

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2 Answers

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the starter should be replaced. The solenoid is kikcing the pinion out but there is no contact being made to turn the starter motor. I have the exact same truck and before i changed the starter used the old starter tap trick. Tap the starter casing with a hammer and it should start turning again. hope this was helpful for you. Good luck.

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