My truck has 163,000 miles, been a good truck. I have been having trouble with my ignition for a while. It would start fine, but I could pull the key out while it was still running and it would continue to run. It didn't bother me much because I could stick the key back in to shut the truck off. Well, now NOTHING happens when I try to start the truck. No light in the dash, no radio, no headlight, no engine cranking, not even a clicking from any selenoids. Yes, I have checked the battery and all possible connections. I went to AutoZone and bought a new Ignition and lock tumbler and installed it, that didn't help. Would the problem be the Ignition Switch? Any help here would be greatly appreciated.

Thanks,
Jason

 

No the Ignition switch would have nothing to do with it.
You either have bad connection at the starter relay battery side or you do not have a body ground by the battery at the fender.
Check for power at the engine compartment fuse box under the hood with a test light with the ground of the test light going back to the battery. Check for power at fuse "A". If you do not have power there you could have two open fuse links also. You do not want to use a meter with this kind of problem.







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I came out here the other day with the same exact problem-(88 f1504x4 5.0 efi)
And was told to change the Battery cables,...
-*** They were right.
The cables looked fine, but I stripped away the protective coating, and they were covered in the battery chalk, all corroded on the positive cable, changed out the Neg cable too just for good measure.
-Now the truck cranks better too.

 

Yep,, it's amazing what can happen when electricity is allowed to flow in a complete circuit!!!

I wonder just how many alternators and batteries are replaced every day when a good cable cleaning or replacement is what was really needed......

 

I have had the same problem with a battery ground cable before. It looked fine, the ends were fine, but it was corroded inside the insulation. A new ground cable is a reasonably inexpensive thing to try.

 

I have had the same problem with a battery ground cable before. It looked fine, the ends were fine, but it was corroded inside the insulation. A new ground cable is a reasonably inexpensive thing to try.

 

Thanks for all your help guys! It ended up being a bad ground wire. I was taking apart the connections to clean them and the just fell apart from so much corrosion. I replaced the cable and cable connectors and the ol' truck fired right up.