Technician A says that if the EGR is open at idle and low speeds, the engine may stall on deceleration. Technician B says that if the EGR is open at idle and low speeds, the engine may surge during low-speed operation. Who is correct?
Technician A says that a tire pressure monitor system that uses a valve-stem-type transmitter is the direct reading type of TPMS. Technician B says that a tire pressure monitoring system that uses a sensor inside and strapped to the wheel is an indirect reading type of TPMS. Which technician is correct?
Tech A says that to check the voltage drop across the main relay switch contacts, the voltmeter leads should be connected between terminals B and D with the relay energized. Tech B says that to check the voltage drop in the O2 ground circuit, the voltmeter leads should be connected between PCM terminal B15 and G101. Who's right?
Technician A says that the top compression ring groove wears more than the other ring grooves. Technician B says that full floating, piston pin lock rings should be installed with their openings facing up. Who is correct?
While discussing boost pressures: Technician A says during certain operating conditions, mainline pressure must be boosted. Technician B says increased pressure is needed to hold brakes and clutches more tightly, such as in reverse or high load conditions. Who is correct?
A V-8 with a high-rise manifold has 97% volumetric efficiency at its highest speed of 6500 RPM. Calculate the maximum airflow to this engine, rounding to the nearest whole unit, if the theoretic airflow is 682 CFM
Two technicians are discussing the purpose of a transfer case in a four-wheel-drive system. Technician A says it transfers power to an additional axle. Technician B says some transfer cases have two speeds. Which technician is correct?
Technician A says that some aluminum-intensive vehicle manufacturers recommend replacing damaged parts using rivets. Technician B says resistance spot welding is a common practice when replacing aluminum parts. Who is correct?
Technician A says that PCV valves should rattle when shaken. Technician B says that defective PCV systems may cause leaking engine seals. Which technician is correct?
Technician A said that pulse width modulated solenoids have a lower electrical resistance than a simple on-off- type solenoid. Technician B says that linear solenoids are pulse -width modulated. Which technician is correct?
Technician A says in the ISAD system, the stator of the unit is mounted to the engine block. Technician B says the stator of the ISAD system is mounted on the end of the crankshaft of the engine. Who is correct?
A diesel powered vehicle with a manual transmission is rapidly accelerated in low gear from an idle speed to a maximum governed RPM while the smoke emissions are measured. Which of these diesel smoke opacity tests is being performed?
Both high-side pressures and low-side pressures are low with the engine running and the selector set to the air conditioning position. Technician A says that the system is undercharged. Technician B says the cooling fan could be inoperative. Which technician is correct?
Technician A says that a CANDi module will flash the RED LED rapidly if communication is detected. Technician B says that a twisted pair is where two wires are twisted to prevent electromagnetic radiation from affecting the signals passing through the wires. Which technician is correct?
Technician Asays the fixed caliper brakes are the oldest type of disc brake. Technician B says the floating caliper allows the rotor to float between the pads as the brakes are being applied. Who is correct?
A no-start condition is being discussed on an engine equipped with a waste spark ignition system Technician A says that a bad CKP (crankshaft position) sensor could be the cause. Technician B says that an open spark plug wire could be the cause. Who is right?
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