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Technical => Electrical Tech => Topic started by: blackcat85 on July 14, 2010, 10:11:02 PM

Title: ignition key
Post by: blackcat85 on July 14, 2010, 10:11:02 PM
hi guys

my ignition key didnt work the accesories and now it wont stay started. i wrapped a bungie cord on the lock cylinder so i could keep the car running.
i got a new key lock assembly ... should that do the trick or is it the ignition switch its self?
thanks
eddie
Title: ignition key
Post by: bigbada1 on July 14, 2010, 10:29:29 PM
More than likely its the ignition switch I would say.
Title: ignition key
Post by: Haystack on July 14, 2010, 11:36:37 PM
The ignition switch is cheaper then the lock. When the switch goes bad it could burn your car to the ground. You need to swap it out.
Title: ignition key
Post by: vinnietbird on July 15, 2010, 12:05:17 AM
Yep,swap the switch asap.It only takes a few minutes,and ignition switches are cheap.It'll need the torx bit with the hole in the middle.
Title: ignition key
Post by: Watchdevil on July 15, 2010, 02:13:02 AM
It's is not likely to be the lock cylinder itself. The lock cylinder just moves a rod that engages the slide in the ignition switch to move the contacts. The ignition switch is definitely worn out and no longer making contact in the right places. Bad contacts can definitely cause a poor connection if they are not touching each other firmly when they should and it will cause resistance which will overheat and possibly cause a fire.

I replaced mine recently as a precaution when I was having trouble with my old Ford starter drawing so much current that it was seizing the solenoid closed causing the starter to keep starting after I released the key. After all these years with the original switch still intact I figured I would take the advice around here and just do it. Inexpensive and easy to install. Also this is the kind of part you always want to buy new and not used.
Title: ignition key
Post by: Beau on July 15, 2010, 01:16:30 PM
If you don't change it out soon, at least unhook your positive battery cable so nothing gets toasty.
Title: ignition key
Post by: TurboCoupe50 on July 15, 2010, 05:47:24 PM
There are no electrical connections in the lock, change the switch and the others are correct, you could have a fire if you don't...
Title: ignition key
Post by: blackcat85 on July 16, 2010, 05:40:16 PM
thanks guys for the info.. i got the switch today .i think i better put it in to nite then.
shop manual says something about drilling out the bolts. so i can just use a torx then?
Title: ignition key
Post by: vinnietbird on July 16, 2010, 05:55:42 PM
Not a regular Torx.It's the "safety" torx. The Torx bits will have a little hole on the end.You can get them at Autozone or any place that sells tools.
Title: ignition key
Post by: Haystack on July 16, 2010, 06:21:26 PM
Some cars they are riveted in and you will need to drill them out and re-tap them.
Title: ignition key
Post by: blackcat85 on July 17, 2010, 12:20:50 PM
well it is done it was very easy too like you said. didnt need to drill didnt need to use torx... my friend cut a slot in the top of the bolt and i used a screw driver to get them out and in.
thanks :)
Title: ignition key
Post by: vinnietbird on July 17, 2010, 08:35:36 PM
Sweet.Congrats on the success.
Title: ignition key
Post by: CoogarXR on July 17, 2010, 10:50:39 PM
On my 85 I was able to grab the screws with vise grips and turn them out easily.
Title: ignition key
Post by: Watchdevil on July 18, 2010, 02:17:18 AM
Quote from: Haystack;328481
Some cars they are riveted in and you will need to drill them out and re-tap them.


This is true... and don't some have the screws where the head breaks off when you tighten them? Well, I do know some cars that do have this if it's not a Ford I am thinking of.

Anyway, I was fortunate to have a car that used not torx screws, but a small hex head. The ignition switch replacement is a breeze.