× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2003 Ford F-150 XL 4.6L Poor Idle Quality, Misfire, MIL Lamp on
Posted to Ford Driveability on 5/25/2010 15 Replies

Truck misfires intermittently, neither engine temp nor run time seem to affect the condition. Normally occurs worst at around 1800 RPM's (45 MPH). I tried swapping the coilpacks between #8 & #5 condition remained the same. Then swapped the plugs #8 & #5, same ...

15 Replies Received (View Replies)

  Related Documents & Media  2003 Ford F-150 XL

 
Message Closed w/FIX

car Vehicle Data

2003 Ford F-150 XL

VIN 1FTRX18W13
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursIntermittently

Trouble Codes

P0308Cylinder 8 Misfire Detected
Message Closed w/FIX

car Vehicle Data

2003 Ford F-150 XL

VIN 1FTRX18W13
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursIntermittently

Trouble Codes

P0308Cylinder 8 Misfire Detected