DFFT Steering and Suspension

Question 1

A vehicle wanders excessively on the highway and requires constant steering corrections. What is the most likely cause?

Accepted Answer

Worn tie rod ends causing excessive play in the steering

Answer

Low tire pressure on the rear axle

Answer

A seized rear sway bar link

Answer

Incorrect camber angle on the front wheels

Question 2

A vehicle pulls to the left when the driver releases the steering wheel. What is the most likely alignment fault?

Accepted Answer

More positive camber on the right front wheel than the left

Answer

Excessive toe-in on both front wheels

Answer

Insufficient caster angle on the steering axis

Answer

Worn rear shock absorbers

Question 3

A customer reports a clunking noise from the front suspension when driving over bumps. What should be inspected first?

Accepted Answer

Sway bar end links and bushings

Answer

Tire tread depth and condition

Answer

Power steering fluid level

Answer

Wheel bearing play and condition

Question 4

Excessive tire wear on the outer edges of both front tires is present. What alignment angle is most likely out of specification?

Accepted Answer

Excessive positive camber on both front wheels

Answer

Excessive negative camber on both front wheels

Answer

Excessive toe-in on the front axle

Answer

Insufficient caster on the steering axis

Question 5

What is the purpose of the caster angle in a vehicle's front suspension alignment?

Accepted Answer

To provide steering returnability and straight-line stability

Answer

To prevent tire edge wear by keeping the tire perpendicular to the road

Answer

To equalize the load between inner and outer wheel bearings

Answer

To control the turning radius during cornering

Question 6

A vehicle has a steering wheel that vibrates at highway speed but is smooth at low speed. What is the most likely cause?

Accepted Answer

A front wheel that is out of balance

Answer

Worn front strut mounts

Answer

Loose power steering rack mounting bolts

Answer

Incorrect front toe alignment setting