NAPA - National Automotive Parts Association Certified Mechanic Suspension and Steering Questions and Answers

Question 1

A vehicle is brought in with a clunking noise from the front end, most noticeable during low-speed turns and when driving over bumps.
The driver also reports that the steering feels loose.
Which of the following is the MOST likely cause?

Accepted Answer

Worn ball joints

Answer

Worn sway bar end links

Answer

A failing power steering pump

Answer

Incorrect tire pressure

Question 2

A technician is performing a wheel alignment and finds the caster angle is significantly more positive on the left front wheel than on the right. What is the MOST likely effect this will have on the vehicle's handling?

Accepted Answer

The vehicle will pull to the left.

Answer

The vehicle will pull to the right.

Answer

The vehicle will have improved high-speed stability.

Answer

The steering will feel lighter than usual.

Question 3

Which of the following is NOT a primary component of a typical MacPherson strut assembly?

Accepted Answer

Control arm

Answer

Coil spring

Answer

Strut mount (bearing plate)

Answer

Shock absorber (damper)

Question 4

A customer complains of a whining or groaning noise that gets louder when turning the steering wheel, especially at low speeds. The steering also feels unusually stiff. What is the MOST probable cause of these symptoms?

Accepted Answer

A failing power steering pump

Answer

Worn outer tie rod ends

Answer

Low tire pressure

Answer

Incorrect wheel alignment

Question 5

In a rack and pinion steering system, what is the primary function of the inner tie rod?

Accepted Answer

To connect the steering rack to the outer tie rod, transferring steering inputs.

Answer

To absorb vertical impacts from the road.

Answer

To adjust the caster angle during a wheel alignment.

Answer

To reduce body roll during cornering.

Question 6

A vehicle consistently pulls to the right while driving on a flat, straight road. A preliminary check shows tire pressures are correct and there are no dragging brakes. Which of the following is the most likely cause?

Accepted Answer

Wheel alignment issues

Answer

A worn left-side ball joint

Answer

A faulty power steering pressure switch

Answer

A damaged CV axle

A vehicle is brought in with a clunking noise from the front end, most noticeable during low-speed turns and when driving over bumps.The driver also reports that the steering feels loose.Which of the following is the MOST likely cause?

A vehicle is brought in with a clunking noise from the front end, most noticeable during low-speed turns and when driving over bumps.
The driver also reports that the steering feels loose.
Which of the following is the MOST likely cause?