The term drive train (also known as drive line) refers to the system that includes all power-transmitting components between the engine and the wheels, including (depending on the vehicle) the clutch, torque converter, transmission, transaxle, U-joints, CV joints, drive shaft, differential and axles.

Most motorists take these components for granted until something goes wrong. That "something" can range from leaks or strange noises to shifting problems to total failure. If you do a lot of stop-and-go-driving, tow a trailer or otherwise subject your vehicle to unusual service, check your owners manual for recommendations. With regular checks and maintenance you can expect fewer and smaller repair bills.

See how much you know about your vehicle's drive train.

1. If you hear a loud clucking sound as you shift your rear wheel drive car from drive to reverse, you probably need:

a) new universal joints.

b) universal joints tightened.

c) transmission mounts tightened.

2. The most common cause of damage to an automatic transmission is

a) driving too fast in second gear.

b) failure to have bands adjusted.

c) overheating due to improper use.

3. The drive train most commonly used in new cars is

a) front engine, front drive.

b) front engine, rear drive.

c) rear engine, rear drive.

4. Most automatic transmissions are cooled by

a) the vehicle's air conditioning system.

b) a fan driven air cooler.

c) the engine cooling system.

5. A lock-up torque converter is a

a) theft-proof device built onto an automatic transmission.

b) torque converter that serves as a parking brake.

c) torque converter in which the fluid coupling is mechanically locked out, providing a solid, non-slipping connection for better efficiency.

ANSWERS:

1. a) By the time the noise has become noticeably loud universal joint failure may be imminent. You could be stuck on the side of the road.

2. c) Improper use can range from heavy duty trailer towing without adequate cooling to excessive "rocking" out of a snow drift.

3) a) is correct.

4) c) is correct.

5) c) is correct.

Provided as a public service by the Car Care Council