OMV Vehicle Maintenance 3 — Questions and Answers
Question 1: What does the abbreviation 'PSI' stand for in the context of tire maintenance?
- Power Steering Index
- Pounds per Square Inch (Correct answer)
- Pressurized Safety Indicator
- Pavement Surface Integrity
Correct answer: Pounds per Square Inch
PSI stands for Pounds per Square Inch, which is the unit used to measure tire inflation pressure.
Question 2: Which fluid is specifically used to keep your vehicle's brake system functioning properly?
- Engine coolant
- Transmission fluid
- Brake fluid (Correct answer)
- Power steering fluid
Correct answer: Brake fluid
Brake fluid is a hydraulic fluid that transfers force from the brake pedal to the brake components at each wheel.
Question 3: What is the role of the vehicle's alternator?
- It cools the engine
- It charges the battery and powers electrical systems while the engine runs (Correct answer)
- It controls the fuel injection system
- It regulates transmission gear changes
Correct answer: It charges the battery and powers electrical systems while the engine runs
The alternator generates electricity to recharge the battery and power the vehicle's electrical components while the engine is running.
Question 4: A grinding or squealing noise when you apply the brakes most likely indicates what problem?
- Low engine oil
- Worn brake pads or rotors needing immediate inspection (Correct answer)
- A loose exhaust pipe
- Low transmission fluid
Correct answer: Worn brake pads or rotors needing immediate inspection
Grinding or squealing during braking typically means brake pads are worn down and the vehicle needs immediate brake service.
Question 5: What is the recommended action when you notice your vehicle pulling to one side while driving straight?
- Drive with one hand to compensate
- Have the wheel alignment checked and adjusted (Correct answer)
- Increase tire pressure on the opposite side
- Have the fuel filter replaced
Correct answer: Have the wheel alignment checked and adjusted
Pulling to one side usually indicates a wheel alignment problem, uneven tire pressure, or tire wear that should be professionally inspected.
Question 6: What is the function of a vehicle's PCV (Positive Crankcase Ventilation) valve?
- It filters the fuel before it reaches the engine
- It vents harmful crankcase gases back into the engine to be burned (Correct answer)
- It regulates coolant flow through the radiator
- It controls the air conditioning compressor
Correct answer: It vents harmful crankcase gases back into the engine to be burned
The PCV valve recirculates blow-by gases from the crankcase back into the intake manifold to be burned, reducing emissions and protecting the engine.
Question 7: How can you tell if your vehicle's battery is weak or failing?
- The engine runs rough at highway speeds
- The engine is slow to start, or you hear clicking when turning the key (Correct answer)
- The turn signals flash faster than normal
- The fuel gauge reads incorrectly
Correct answer: The engine is slow to start, or you hear clicking when turning the key
A slow-cranking engine or rapid clicking when turning the key are classic signs of a weak or dying battery.
OMV Vehicle Maintenance 3
What does the abbreviation 'PSI' stand for in the context of tire maintenance?