Auto Maintenance & Light Repair Flashcards

A vehicle's tire shows a recommended inflation pressure of 32 psi on the door placard, but the sidewall reads 'Max 44 psi.' Which pressure should be used for normal driving?

Answer: 32 psi from the door placard

The door placard lists the vehicle manufacturer's recommended pressure for proper handling and wear, while the sidewall lists only the tire's maximum.

When rotating tires on a front-wheel-drive vehicle using the modified-X pattern, where do the rear tires move?

Answer: Crossed to the opposite front corners

On FWD vehicles the rear tires cross to the opposite front positions while the fronts move straight back.

A technician finds the engine oil level above the full mark on the dipstick. What is the most likely consequence if left uncorrected?

Answer: Crankshaft aeration and foaming of the oil

Overfilled oil can be whipped by the crankshaft, causing aeration and foaming that reduces lubrication.

Which tool is correct for accurately tightening lug nuts to manufacturer specification?

Answer: Torque wrench

A torque wrench applies the exact specified torque, preventing warped rotors and stripped studs.

A customer complains of a squealing noise that disappears when the brake pedal is pressed. What is the most likely cause?

Answer: Worn brake pad wear indicators contacting the rotor

Wear indicators squeal against the rotor and quiet down when pads are forced against the rotor under braking.

What does the acronym used on a maintenance schedule, 'OEM,' refer to?

Answer: Original Equipment Manufacturer

OEM refers to parts and specifications from the original equipment manufacturer.

Before lifting a vehicle on a frame-contact lift, the most important step is to:

Answer: Position the lift pads at the manufacturer's designated lift points

Lift pads must contact the manufacturer's designated points to safely support the vehicle.