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International Automotive Technicians Network
1985 Ford LTD, Ignition - Primary Waveform
Posted to the Waveform Library on 1/30/2001

RF Noise showing in primary current signal. Black image, current probe clamp around primary ignition wire. Blue image, current probe laying next to primary ignition wire.

 

car Vehicle Data

1985 Ford LTD Crown Victoria 5.0L

Engine5.0 L / 8 cyl / GAS
Trans4-speed AutomaticTransmission
DeliveryFuel Injection
SubsystemIgnition
Component
ConditionKnown Good

References

THEORY: ign coil current waveform with negative blip after fireing line
THEORY: Primary tail effect, more then just RF noise.
THEORY: Primary tail effect, more then just RF noise.
THEORY: Primary tail effect, more then just RF noise.

car Vehicle Data

1985 Ford LTD Crown Victoria 5.0L

Engine5.0 L / 8 cyl / GAS
Trans4-speed AutomaticTransmission
DeliveryFuel Injection
SubsystemIgnition
Component
ConditionKnown Good

References

THEORY: ign coil current waveform with negative blip after fireing line
THEORY: Primary tail effect, more then just RF noise.
THEORY: Primary tail effect, more then just RF noise.
THEORY: Primary tail effect, more then just RF noise.