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Old Jan 27, 2019 | 12:40 PM
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Po100

I have a 13 f150 5.0L it does not run, will try to start but not fire. Only code I could retrieve is Po100. Took MAF sensor and noticed almost like it was burnt inside. Could that cause it not to run? Have had issues with it in the past but the MAF sensor was only dirty. When I had issues with it before it’d run but be very sluggish and shut off
 
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Old Jan 27, 2019 | 01:07 PM
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PO100 is SOMETHING wrong with the MAF circuit.. Normally the truck will start, but run like crap.. If you Sensor is broken, I would replace that FIRST and then see what happens.
 
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Old Jan 27, 2019 | 05:51 PM
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I think a relay turns the map sensor on...and it may be stuck on
 
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Old Jan 29, 2019 | 01:26 PM
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My truck was running fine and I stopped at a stop sign. Tried to move forward and the motor was running really rough and had absolutely no power. Had it towed to the dealer and the MAF went bad that quickly. They replaced it and everything has been fine since.
 
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Old Jan 29, 2019 | 01:46 PM
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Under further diagnosis, I’m leaning more towards not firing. I know it’s not good for the engine but gave 2 little sprays of starting fluid and still didn’t run. It cranked faster off the starting fluid but did not run. Any ideas? Just replaced spark plugs 3,000 miles ago. And replaced #8 coil. I have desired fuel pressure
 
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Old Jan 29, 2019 | 10:18 PM
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if it is not firing, I would think you would get some CODE........ crank position sensor , etc.
 
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Old Jan 30, 2019 | 09:28 AM
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Diagnosed the problem, a simple corroded wire going to the fuel pump driver module located on cross member under bed near spare tire storage
 
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