× 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
1999 Ford F-150, Ignition - Secondary Waveform
Posted to the Waveform Library on 4/20/2004

This is a misfire on cylinder #4, caused by the all too common coolant leak from the heater hose above #4 coil.

 

car Vehicle Data

1999 Ford F-150 5.4L

Engine5.4 L / 8 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemIgnition
Component
ConditionKnown Bad

car Vehicle Data

1999 Ford F-150 5.4L

Engine5.4 L / 8 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemIgnition
Component
ConditionKnown Bad