Author Question: Two technicians are discussing testing a catalytic converter. Technician A says that a vacuum gauge ... (Read 223 times)

Alygatorr01285 · **on:** Jun 22, 2018

Two technicians are discussing testing a catalytic converter. Technician A says that a vacuum gauge can be used and observed to see if the vacuum drops with the engine at idle for 30 seconds. Technician B says that a pressure gauge can be used to check for backpressure. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

Question 2

Technician A says that all temperature sensors are PTC devices that decrease in resistance as the temperature increases. Technician B says that some vehicle manufacturers use a stepped ECT circuit inside the PCM to broaden the accuracy of the sensor. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician