My Truck:
1999 Ford F-150 Extended Cab 4x4 5.4L V8

So the other day I was driving the truck and it just dies on me. Tried starting but it just cranked and cranked. Got it pulled over to a parking lot and then tried to start and I got it to run again. Died a couple mins later uo the road and it will not start at all anymore. I got it towed to my driveway and I've started diagnosing some things.

I dropped the tank thinking it was a pump I replaced awhile back. The pump wasn't running but jumped to conclusions and took it back to the auto parts store. They bench tested and it works fine. I checked for voltage at the pump connector. NOTHING. So I'm not getting power to Fuel pump. Then I checked the fuse and relay for the fuel pump. Everything was okay.

I did some research and decided to check for spark. NO SPARK. Another thing I noticed the other day was that the odometer is displaying all dashes. So I'm really unsure on what to really troubleshoot. I am going back to the truck tomorrow to check a few other things. I'm not sure if the Theft light is blinking or not so I will check that tomorrow and get back to you.

While searching the forums there is just so much that could be messing this up and I'm just confused on what path to take to start narrowing it down.

Any suggestions on what to check tomorrow? Any other relays or fuses besides the fuel pump? What about any modules to check like PCM, GEM, etc. Or I've heard the crankshaft sensor could be an issue. Please help. I appreciate your time. THANKS!

 

Edit: ---

 

So here's a quick update. Decided to go over there tonight and do a little more troubleshooting. I played musical chairs with the relay and still had no luck. I didn't try a relay from the inside as they are the same as well so I might do that tomorrow.

I did run a diag through the instrument cluster and it displayed the following codes:

9681 PATS Tranceiver Signal is Not Received (Not Connected, Damaged, or Wiring)
d147 SCP (J1850) Invalid or Missing Data for Vehicle Security PCM REFER to Section 419-01.
Missing SCP Message J1850 REFER to Section 418-00

So could the PCM not getting power be causing the errors with the PATS system or do you guys think it could be the PATS transceiver itself failing? Is there a way to test either? Maybe it still is a relay and I could jumper the relay points even though I dislike doing that.

 

I did do pretty much everything you said. I will check the crankshaft sensor today. You posted while I was already back over at the ruck last night. So for you to delete your post and saying I'm not listening is really disrespectful. I'm just writing down and putting everything out there that I find at this point.

I was giving more info for any other users to help diagnose. My question to you is would a Crankshaft Position Sensor cause a theft warning to flash on the dash?

 

What's disrespectful is for you to ignore a post of those attempting to help you. And how the hell was anyone to know that you were writing things down and checking them as you go? We can't see that, and you didn't post it either. Give me a break.

Can't believe you called me. Well, don't worry, you'll have others attempting to do the same. Try to be respectful, if you got it in yuh, or if you even know what that means lol, -you may get some good help.

 

I DID listen to your advice. You're the that started assuming I wasn't listening. I can't just fly over to my truck and start testing it.