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Key switch shorted out. Now I'm not getting any

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  • Cars & Trucks Master
  • 6,151 Answers

Sure its the key switch-may be the ignition switch on steering colum--or othr things like a module etc--40 and 50yrs ago it was easy to play with wiring but today becareful-cud burn computer--get a mobile mech with experience

Posted on Dec 13, 2012

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Anonymous

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: MY 1997 EXPLORER STARTS BUT WONT STAY RUNNING .

I had the same exact problem with my 1998 Explorer and it was the Idle Air Control. You can try to remove and clean it but it won't last very long. I replaced it myself in 5 minutes and an expense of $80. Hope this helps.

Posted on May 06, 2009

Anonymous

  • 1 Answer

SOURCE: 95 ford mustang that was running but was miss firing now doesn't.

Did you check the timing

Posted on May 16, 2009

Anonymous

  • 5 Answers

SOURCE: 1994 f150 no fire to coil or fuel pump

i got a 1994 f150 that starts but cuts right back off so i had no fuel psi so i put a new fuel pump and fillter then found out that it was not getting power to the pump the cut off is not triped and no brakes in the wires can anyone help??

Posted on Sep 10, 2009

Kelly Garvey

  • 230 Answers

SOURCE: 1990 gmc 6500 topkick with no spark or injector pulse

You are jumping to conclusions. Slow down.
No spark AND no injector pulse indicates none of the desired outputs were triggered. The ignition module makes spark when it receives a crankshaft position sensor signal, and then transfers control of that spark to the computer after it starts. The module takes its crank sensor signal and generates an RPM count that it forwards to the PCM(main computer) which is used for triggering the injectors and controlling timing. SO, if you had a bad crank sensor OR a bad ignition module, you could lose both spark AND fuel. a coil would not disable injector pulse. modules RARELY fail in a manner that disables RPM reference to the computer causing it to not fire the injectors...At this point, I would TEST the crank sensor as the next step. If its easier, 1 of the wires on the module goes directly there so you can test the crank sensor at the module.

Posted on Sep 18, 2009

Testimonial: "great info, thanks!"

MARJOREE GROOMES

  • 114 Answers

SOURCE: Need a wiring diagram for a 1969 Ford F250.

there should be a slot for each wire on back of ignition play with them till you get it right cant hurt anything

Posted on Jan 14, 2010

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1 Answer

1984 f250 fires only when rolling back key switch


If your saying no spark at the plugs, The positive side of ignition coil should be hot, with key in crank or run position. If it isn't, I'd have to check ignition switch and wiring circuits.
I don't have a good wiring diagram for your model year, I can't look up wiring.

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It should be easy to hot-wire the switch. There is a hot power-in wire, a run wire at the "on" position, and a start wire at the start position. That is all you need. First locate the power wire, twist it with the run wire. Now the ignition should be on, the dash warning lights and gauges on. Now if you take the start wire and touch it to those two twisted together, the engine should crank over and start.

This is a quick way to get it started, but you have to cut the wires. If you pull off the ignition switch connector, you might be able to use short jumper wires from the hot wire to the run position, and one to the start wire. Then if you get a new key and lock cylinder later, all you have to do is to plug back in the switch connector.

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Starting issue, I have a 1993 ford f250 7.3l pre powerstroke. I started the motor and it stalled out like there was a short, now when i turn the key my glow plugs do not fire and wait to start doesnt show...


On some Models the glow plug Relay does not have an integrated Power Relay. This means there is a second Relay before the glow plug Relay that feeds it power.

You should check the wires running to the glow plug Relay for power with the key ON. Check some other wires off of the Ignition switch to make sure your 20 year old Ignition switch is good.

There are some sites which show vehicle wiring. Autozone has a free section after Registering your vehicle but it takes a little sorting through the Help section. There should be a fuse to protect the above Relays.

Make sure you find the Diesel-equipped wiring circuit. Diesel ignitions are different from gas units.

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sounds like you might have a short inside the electrical part of the ignition switch.

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NO POWER TO FUEL PUMP......CHECK ALL IN LINE WIRING
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1 Answer

Get fire every where else but through distributor and plugs spins over fine changed distributor, plug wires, coil, and ignition coil and still won't start what else to do i checked for bad grounds and...


You have problem with you timing or did you ever label all the high tension wire before you unplug it. it might be re arrange the firing sequence. 1342 firing order. And the timing position of the distributor were at original place.

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I got a 89 dodge d 150 v6 no fire at the coil can run a hot wire to the coil and it runs what does this regulator look like and where is it located


Try this jumper the ballast resistor on the fire wall if you have one looks like a block of white ceramic wit two or four wires. Jump them across not up and down If you check voltage on the right side 12 volt left side lower to protect coil from 12 volts. If that doesn't work your shut down relay may be bad. If not getting voltage to resister could be the starter switch on top of steering column under dash. Key switch is not ignition switch. The key switch pulls a lever up on the ignition switch if switch is not set right it will not send power to the coil. I had two break before on me. The book says to follow the wire all the way back to the battery and look for breaks

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if it turns over from below,then its in the ignition switch and this also feeds power to the e.c.m. to make the engine fire so you either have a bad switch contact or the hot 12 volt wire to the ignition switch

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My 1989 ecoline 150 starter fires when u connect the batteryreplaced starter solinoid and ignition switch and keyswitch still starts no key and will still run after van starts


look for shorted wires leading from your starter solenoid to your ignition switch.
the wires are shorted "on" before they get to your ignition switch.
separate the burned/shorted wires: (most likely under the dash) then tape them so they don't touch.

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