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Need Help - Won't Start Intermittently

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Old Nov 9, 2012 | 08:49 AM
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Unhappy Need Help - Won't Start Intermittently

My 2002 F150 Screw has been giving me issues when trying to start it for the last month. Sometimes it will start sometimes it won't.
When I turn the ignition on the gauges all seem normal, the theft light turns solid then goes out, but engine will turn over but not start.
Sometimes it will start if I leave the ignition on for 20 seconds then pull the key and try again. (this doesn't always work)
I have disconnected the battery for about 2 minutes this usually works but not always.
Sometimes it will start first time with no issues.
Once the the engine fires it runs fine.
Another symptom is when I shut the engine off, pull the key and open the door, the chime telling me that the key is still in the ignition sounds. (but the key is in my hand)
I put a new battery in yesterday to rule that out and because the old one seemed to be getting weak. (starting issues didn't go away)
I don't want to put 300+ into a fuel pump without being sure that's the problem.
I don't have much electrical knowledge but could really use some help troubleshooting this frustrating issue.
 
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Old Nov 9, 2012 | 08:54 AM
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49er_rs
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Additional Info

5.4L
4x4 Lariat
The only mod is the original key and PATS ring are wire tied under the dash. (because it's the only programmed key I have)
 
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