Showing 1–6 of 6 results
Throttle valve position sensor single
With a lab scope a throttle valve position sensor is measured with the key turned on and no running engine. The signal from the sensor is shown and can be downloaded. To help determining whether a throttle valve position sensor is functioning correctly, different possible deviations from the example signal are mentioned along with probable causes.
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Throttle valve position sensor dual
With a lab scope a throttle valve position sensor is measured with the key turned on and engine off. The signal from the sensor is shown and can be downloaded. To help determining whether a throttle valve position sensor is functioning correctly, different possible deviations from the example signal are mentioned along with possible causes.
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Throttle valve control motor DC
With a lab scope a throttle valve control motor signal voltage is measured with the key on and engine off. The signal from the actuator is shown and can be downloaded. To help determining whether the throttle valve control motor is functioning correctly, different deviations from the example signal are mentioned along with possible causes.
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Throttle valve control stepper motor
With a lab scope throttle valve position stepper motor control signals are measured with a revved engine at operating temperature. The signal from the actuator is shown and can be downloaded. To help determining whether the throttle valve position stepper motor is functioning correctly, different deviations from the example signal are mentioned along with possible problem causes.
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Idle air control valve
With a lab scope an idle air control valve signal voltage is measured under various conditions. The signal from the actuator is shown and can be downloaded. To help determining whether the idle air control valve is functioning correctly, different deviations from the example signal are mentioned along with possible causes.
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Ford Fiesta stutters
When trouble shooting intermittent problems, a good automotive oscilloscope is indispensable. A Ford Fiesta with J6B engine was suffering occasional stuttering. The shop it was brought to did not have an oscilloscope, so they could not easily locate the source of the problem. They did replace some components, but the problem remained. Using an automotive diagnostic oscilloscope, the problem was soon found.
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