Automotive Maintenance Quiz

A customer states that the left front tire loses air. Any of these could be the cause EXCEPT:

• Water in the lubricant

• Twist the boot half a turn

• Tighten the lug nuts in a star pattern

• Excessive run out in the wheel

Brake fluid must meet minimum standards that are required by the:

• Replace the Generator (alternator)

• Department of Transportation (DOT)

• Environmental protection Agency (epa)

• Clean air Act (caa)

A transmission equipped with a filter is being serviced. When installing the new filter, the:

• Seal should be replaced with a rubber band

• Seal should be lubricated with transmission fluid

• Seal should be left dry to prevent leaks

• Seal should be coated with engine oil instead

Which of these should be done when reinstalling the wheels on a vehicle after completing a brake service?

• Loosen the lug nuts before lowering the vehicle

• Tighten the lug nuts in a star pattern

• Use an impact wrench to tighten the lug nuts quickly

• Loosen the lug nuts

Diagnostic trouble code (DTCs) is being retrieved from the PCM. Technician A says that after recording the DTCs, the freeze frame data should be reviewed before clearing the codes. Technician B says that the action of clearing the DTCs will turn off the malfunction indicator light (MIL) Who is right?

• A only

• Both A and B

• Cylinder head gasket

• Neither A nor B

A digital multimeter (DMM) reading of 450 mV is equal to:

• 1.45 volts

• 100.45 volts

• 0.450 volts

• 0.46 volts

A vehicle's battery prematurely fails. A charging system output test shows the generator (alternator) is producing a constant 16.0 volts. This could indicate a failed:

• Wind direction indicator

• Voltage regulation

• Current flow

• Power factor

While performing a cylinder leakage test, the technician hears air coming out of the exhaust pipe. Technician A says that a burned exhaust valve could be the cause. Technician B says that a leaking head gasket could be the cause. Who is right?

• Yellow

• Both A and B

• B only

• A only

During turns, clear water drips out from under the dash onto the passenger side floor. Technician A says that a leaking heater core could be the cause. Technician B says that a clogged evaporator drain could be the cause. Who is right?

• Yellow

• Both A and B

• B only

• A only

The limited-slip rear axle assembly of a vehicle has multiple oil leaks. Technician A says that using the incorrect type of fluid could be the cause. Technician B says that a plugged axle vent could be the cause. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B