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2008 Ford F-150 Lariat 5.4L Misfire
Posted to Ford Driveability on 11/1/2025 15 Replies

Originally a no start- found a blown fuse I think for ignition coils- its been a while. Replaced fuse and truck started with misfire and P0354 code. Found cylinder 4 coil driver wire had rubbed through on a/c line. Repaired wire and still no go. Checked co...

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car Vehicle Data

2008 Ford F-150 Lariat

VIN 1FTPW14V48
Engine5.4 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0354Ignition Control Module Circuit 4 Malfunction
Open Help Request

car Vehicle Data

2008 Ford F-150 Lariat

VIN 1FTPW14V48
Engine5.4 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0354Ignition Control Module Circuit 4 Malfunction