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2004 Ford F-150 XL, waveform
Posted to the Waveform Library on 10/30/2008

This is a capture from a known bad front axle vacuum solenoid. The Vacuum was applied to the front axles and the solenoid would electrically work but the current(blue) wave shows no mechanical movement. The axles are engaged when no vacuum is applied.

 

car Vehicle Data

2004 Ford F-150 XL 5.4L

Engine5.4 L / 8 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemNot Applicable
ComponentOther
ConditionKnown Bad

car Vehicle Data

2004 Ford F-150 XL 5.4L

Engine5.4 L / 8 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemNot Applicable
ComponentOther
ConditionKnown Bad