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73-87 Chevy _ GMC Trucks => Interior & Equipment => Steering Columns => Topic started by: maximus5541 on July 27, 2008, 12:25:17 pm

Title: Ignition cylinder
Post by: maximus5541 on July 27, 2008, 12:25:17 pm
 Has anyone ever experienced problems with the key cylinder. When i put the key in the ignition and trun it to the run position usually the seat belt and choke light come intermittley, but now i have to jiggle the key to get it to come on, as a result in this the truck will not start, it just cranks over with no spark.
Title: Re: Ignition cylinder
Post by: cracker0169 on July 27, 2008, 12:49:16 pm
sounds like bad contacts on the ignition switch under the dash  :-\

Take a voltmeter and check to see if you are getting 12v at the distributor with the key on the 'run' position.
Title: Re: Ignition cylinder
Post by: maximus5541 on July 28, 2008, 01:49:03 pm
i will try that this evening,  i will post back the results., thanks for the help in advance
Title: Re: Ignition cylinder
Post by: maximus5541 on July 29, 2008, 09:13:20 pm
well, i checked it, and there is voltage at the dist. only when i jiggle the key, so the problem lies between the key cylinder and the dist. i know the key turns, and that pulls and pushes a little metal rod up and down the column, then im lost?
Title: Re: Ignition cylinder
Post by: cracker0169 on July 29, 2008, 10:35:56 pm
that rod goes into an igntion switch. possibly the rod is bent or the switch is just wore out. i dont believe they are that expensive but I would the switch and check it out and see if there is any slop in the operation of it all.
Title: Re: Ignition cylinder
Post by: 78BBSTEPSIDE on July 29, 2008, 10:42:15 pm
I 've had several switches go bad through the years. A $20.00 switch that is priceless. No contact=no go! Good Luck
Title: Re: Ignition cylinder
Post by: DnStClr on July 29, 2008, 11:22:11 pm
I'd like to learn more about the ignition switch and rod. Hard to replace? My new 87 Silverado (well, newly bought) has a similar problem where it won't shut off after the key is turned.
Title: Re: Ignition cylinder
Post by: VileZambonie on July 30, 2008, 10:25:15 am
Check the rack mechanism in the column and see if it's broken.
Title: Re: Ignition cylinder
Post by: DnStClr on July 30, 2008, 07:32:03 pm
Hope I'm not stealing the thread-  The rod for my switch moves up and down too, just like Maximuss's. Actually it looks like it moves just a tad too far down when ignition is turned off. A slight push upward on the rod turns my ignition off. I wonder if I can bend the rod a little to make it align better?
Title: Re: Ignition cylinder
Post by: VileZambonie on July 30, 2008, 09:49:32 pm
Don, the rack mechanisms are nototrious for breaking in the column which causes these problems. I would pop it apart and check it.
Title: Re: Ignition cylinder
Post by: VileZambonie on July 30, 2008, 10:05:46 pm
Here's an article on how to disassemble the steering column

Click Here (http://elcaminocentral.com/article95.html)
Title: Re: Ignition cylinder
Post by: maximus5541 on July 31, 2008, 01:57:52 pm
well checked it all out and replaced the ignitoin switch and no more problems.
Title: Re: Ignition cylinder
Post by: DnStClr on August 09, 2008, 04:28:02 pm
Got mine fixed too. The rack mechanism was ok. I had to loosen the ignition switch and move it forward a little bit. ( a bear to get to!) Works good now. no more accessories running when I turn the key off..
Title: Re: Ignition cylinder
Post by: cwilson jr on January 17, 2009, 07:03:24 pm
not trying to bring up old posts guys, but there is a link posted above about tearing apart the steering column which may be very useful to me.  it just goes to a random post listing now.  does anyone have the original information, or any detailed information and pics of the ignition rack and lock cylinder?  i can't find any detailed info, including the haynes and old posts.
Title: Re: Ignition cylinder
Post by: VileZambonie on January 17, 2009, 07:14:41 pm
What exactly is the problem with your column? Loose tilt?
Title: Re: Ignition cylinder
Post by: cwilson jr on January 17, 2009, 09:56:57 pm
can't get the key to the "start" position.  it's not the lock cylinder either as i purchased a new one.