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Finally figured out the issue with the Explorer, a wire from the fuse box to the PCM was damaged. After running a bypass wire (instead of tearing into the harness), the Explorer now runs again! Thank you to everyone (especially Bill) for the help! -Jim

I have not had a chance to re-check the voltage to the CKP yet, but the old CKP I replaced measured at 341 ohms so it looks like it is still good & not what was causing the problem. I will pull out the replacement CKP tomorrow & measure the resistance along with the voltage to the CKP plug &...

Yes you do have to move the AC compressor to replace the crank sensor, & I agree it is a pain! I did re-seat the plug & made sure it is fully connected. I also thoroughly inspected the engine bay & wiring & did not see any signs of mice (droppings, nest, etc.) or any chewed or damaged wiring...

Bill, below are my responses (in red) to your questions: 1) Disconnect TPS harness and check voltage to middle 2 wires with key on, engine off. Advise results. 4.95V 2) Disconnect Crank sensor harness and check voltage to each wire with key on, engine off. Advise results. I could not get a...

I appreciate your efforts in helping me solve this, it appears we are looking at different books. My 2007 owners manual has the under-hood fuse panel info. on pages 286-288. The relays listed go from 46A to 49 & omit 47 & 48. The PCM relay is #55A & I tried swapping it with the front wiper...

There is no power to the coils. The PCM relay on this vehicle is #55A in the under-hood fuse panel, is that the one you are referring to?

Thanks for the info Bill, however I already checked that fuse & it looked good. I also replaced that fuse with a new one just in case there was something wrong with it that I couldn't see, & no change. I appreciate everyone's input so far, keep the ideas coming! Thanks -Jim

Thanks for the info, I will see if I can find any codes with a better scanner & report if I find anything.

There were no codes present because the battery had been disconnected. -Jim

No aftermarket remote start or alarm but I live in the country so I know there are mice around, I'll make sure I look over the wiring really closely. Thanks! -Jim

It cranks over fine, I only disconnected the battery out of habit, I do it with all of my vehicles when I don't know when I will be driving them again. I did try resetting the inertia switch, however the fuel pump & injectors are working & I think the inertia switch would kill those? I also...

Thanks for the replies so far. There are no codes, I did hook it up to a code reader but I disconnected the battery when I parked it last because I knew it would be sitting (this is not my main vehicle), so if there were codes they are gone now. The truck was running perfectly when parked, no...

I have confirmed that there is no spark out of any of the coils, & no signal to the plugs going to the coils. Truck was running perfectly before being parked & nothing was changed or done prior to the no spark condition.

I have a 2007 Explorer XLT with a 4.6L & it currently has no spark, so I am looking for ideas on what to check next. Here is an overview of the problem & what I have done so far: -Problem started after sitting for 2 weeks during severe cold weather, battery was disconnected during this time so...