I have a 1995 F-150 with the 4.9 efi I6. I parked my truck and when I returned a few moments later it wouldn't start, I'm pretty sure I've narrowed it down to the ignition system. I replaced plugs, wires, rotor, and even the coil and it still doesn't start up. The rotor spins and is making contact with the cap but I'm not sure why I'm not getting spark. I'm thinking about replacing my ICM next and maybe the distributor cap. My new coil isn't getting any voltage either. But am I missing anything else other than that? Why would it have just died within 30 minutes of being parked? Thank you all in advance.

 

Have you tried jumping the coil?

 

Why exactly? What diagnosis have you done?Were those AFTER this problem, or before? Did any of them test bad? Did each of the new ones pass the same test that the original failed?Well, there's a BIG problem!Why? What's wrong with the original?If the rotor was hitting it, it might need to be replaced, but only AFTER the distributor.How can you diagnose the ignition system if the coil isn't powering up? Did you even look at the fuses?It sounds that way.Things that work eventually stop working. They have to stop some time. When you stop blindly replacing parts, and find the actual root cause, you'll probably understand why it quit when it did.

Click this thumbnail, read the caption, and follow the relevant links:



That's the correct diagnostic procedure for your truck's ignition system.

 

Fixed her a couple weeks back, was the ICM, with no spark it made sense after I replaced the plug, wires, coil and rotor.