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1997 GMC K1500 Sierra SLT, Waveform
Posted to the Waveform Library on 7/6/2015

Waveform showing top trace connected to knock sensor which appears to be timed with intake valve opening, bottom trace is pressure transducer connected to cyl showing overlay on one 720 degree cycle, engine sounds like a diesel idling, slight throttle and nois...

 

car Vehicle Data

1997 GMC K1500 Sierra SLT 5.7L

Engine5.7 L / 8 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemNot Applicable
ComponentOther

car Vehicle Data

1997 GMC K1500 Sierra SLT 5.7L

Engine5.7 L / 8 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemNot Applicable
ComponentOther