Next step was to plug into the 16 pin OBD2 diagnostic connector located under the dash. I was quickly able to confirm the engine has spark by verifying that the check engine light goes off while cranking the engine over and also by using my spark tester installed into the ignition coil. There was a diagnostic trouble code of P0191 and P1233. Upon checking, the truck had spark but no fuel pressure when cranking. Customer stated they were in the middle of a car wash and the engine stalled out and would not restart. Recently, we had a 2004 ford f150 with a 5.4-liter engine towed into the shop. If your symptom continues, I'd recommend using a scan tool to check. The fuel pump driver module on Ford trucks of this vintage is known for. Question: I have a 2005 Ford F-150 with a 5.4-liter V-8 engine with slightly more. The vehicle was towed to the dealer where it was diagnosed with a faulty fuel pump driver module. The contact stated that while driving 45 mph, the vehicle stalled without warning.
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