Top 10 Questions for Motor Vehicle Technician Interview

1. What is the difference between a CV joint and a U-joint?

A CV joint is a constant velocity joint, which means that it can transmit power at a constant speed even when the joint is at an angle. A U-joint, on the other hand, is a universal joint, which means that it can transmit power at any angle. CV joints are typically used in front-wheel-drive or all-wheel-drive vehicles, while U-joints are typically used in rear-wheel-drive vehicles.

2. What are the symptoms of a bad wheel bearing?

Noise

• A humming or growling noise that increases with speed.
• A clicking noise when turning.

Vibration

• A vibration in the steering wheel or floorboard.
• A vibration that increases with speed.

Play

• The wheel has excessive play when it is rocked back and forth.

Other

• The tire is hot to the touch.
• The brake pads are worn unevenly.

3. How do you diagnose a problem with the fuel system?

There are a few different ways to diagnose a problem with the fuel system. One way is to use a fuel pressure gauge to check the fuel pressure. Another way is to use a fuel injector cleaner to clean the fuel injectors. Finally, you can also use a scan tool to check for any trouble codes that may be related to the fuel system.

4. What are the different types of engine oil?

There are three main types of engine oil: conventional oil, synthetic oil, and semi-synthetic oil. Conventional oil is the most common type of oil and is made from refined crude oil. Synthetic oil is made from man-made chemicals and is more expensive than conventional oil, but it offers better protection and performance. Semi-synthetic oil is a blend of conventional oil and synthetic oil and offers a good balance of price and performance.

5. What are the symptoms of a bad transmission?

• The transmission slips or hesitates when shifting gears.
• The transmission makes a whining or grinding noise.
• The transmission fluid is leaking.
• The check engine light is on.
• The vehicle is difficult to move or does not move at all.

6. How do you replace a brake pad?

• Park the vehicle on a level surface and engage the parking brake.
• Loosen the lug nuts on the wheel that you are working on, but do not remove them.
• Jack up the vehicle and place a jack stand under the frame.
• Remove the lug nuts and the wheel.
• Remove the caliper bolts and the caliper.
• Remove the old brake pads from the caliper.
• Install the new brake pads into the caliper.
• Reinstall the caliper and the caliper bolts.
• Reinstall the wheel and the lug nuts.
• Tighten the lug nuts and lower the vehicle.

7. How do you diagnose a problem with the electrical system?

There are a few different ways to diagnose a problem with the electrical system. One way is to use a voltmeter to check the voltage at different points in the system. Another way is to use an ammeter to check the current flow in the system. Finally, you can also use a scan tool to check for any trouble codes that may be related to the electrical system.

8. What are the different types of spark plugs?

There are several different types of spark plugs, each with its own unique characteristics. Some of the most common types of spark plugs include:

• Copper spark plugs: Copper spark plugs are the most common type of spark plug and are made from copper. They are relatively inexpensive and offer good performance.
• Iridium spark plugs: Iridium spark plugs are made from iridium, which is a very hard and durable material. They offer longer life and better performance than copper spark plugs.
• Platinum spark plugs: Platinum spark plugs are made from platinum, which is a very expensive material. They offer the longest life and best performance of all spark plugs.

9. What are the symptoms of a bad alternator?

• The battery is not charging properly.
• The headlights are dim.
• The electrical system is not working properly.
• The check engine light is on.
• The vehicle is difficult to start or does not start at all.

10. How do you replace a starter motor?

• Disconnect the negative battery terminal.
• Locate the starter motor.
• Remove the bolts that hold the starter motor in place.
• Disconnect the electrical wires from the starter motor.
• Remove the starter motor from the vehicle.
• Install the new starter motor into the vehicle.
• Connect the electrical wires to the starter motor.
• Install the bolts that hold the starter motor in place.
• Connect the negative battery terminal.

Motor Vehicle Technicians, also known as automotive technicians, play a vital role in maintaining and repairing motor vehicles, such as cars, trucks, and buses. Their responsibilities cover a wide range of tasks involving the diagnosis, maintenance, and repair of various vehicle systems.

1. Diagnosis and Troubleshooting

Technicians diagnose mechanical, electrical, and computer-related issues in vehicles using specialized tools and equipment. They analyze symptoms, read diagnostic codes, and perform tests to identify the root cause of problems.

• Conduct thorough vehicle inspections to identify potential issues.
• Use diagnostic equipment to retrieve fault codes and interpret their meanings.
• Analyze vehicle performance data to pinpoint specific areas of concern.

2. Maintenance and Repairs

Technicians perform scheduled maintenance and repairs on vehicles to ensure their safe and reliable operation. They replace faulty components, adjust systems, and perform regular inspections.

• Replace worn or damaged parts, such as brakes, tires, and batteries.
• Lubricate and adjust vehicle components to maintain optimal performance.
• Conduct preventive maintenance checks, such as oil changes and fluid level inspections.

3. Electrical and Computer Systems

Technicians work on electrical and computer systems in vehicles, including wiring, lighting, and onboard computers. They diagnose and repair electrical faults, test sensors, and program control modules.

• Trace and repair electrical wiring problems using specialized equipment.
• Replace and calibrate electrical components, such as alternators and starters.
• Program and update vehicle computer systems using diagnostic software.

4. HVAC and Climate Control

Technicians maintain and repair heating, ventilation, and air conditioning (HVAC) systems in vehicles. They diagnose refrigerant leaks, recharge systems, and repair or replace components.

• Perform leak tests and recharge A/C systems as needed.
• Inspect and replace HVAC filters to maintain air quality.
• Repair or replace HVAC components, such as compressors and condensers.

Preparing for a job interview can be daunting, but following a few key tips can help you ace the interview and increase your chances of landing the job. Here are some tips and hacks that you can use:

Research the Company and Position

Before the interview, take the time to research the company thoroughly. Visit their website, read industry news, and learn about their products or services. Understanding the company’s culture, values, and business goals will give you a deeper insight into the role and help you tailor your answers accordingly.

• Use LinkedIn to connect with current or former employees to gain insights into the company culture and the position you’re applying for.
• Read the job description carefully and identify the key skills and experience required. Highlight these in your resume and during the interview.

2. Practice Your Answers to Common Interview Questions

Anticipate common interview questions and prepare your answers in advance. Practice answering them clearly and concisely, using specific examples from your experience. You can use the STAR method (Situation, Task, Action, Result) to structure your answers and provide concrete evidence of your skills and abilities.

• Prepare a brief elevator pitch about yourself, highlighting your most relevant skills and experience.
• Consider using the STAR method to answer behavioral questions, such as “Tell me about a time you faced a challenging customer.”.

3. Be Enthusiastic and Confident

Your enthusiasm and confidence can go a long way in making a positive impression on the interviewer. Show your passion for the automotive industry and the specific role you’re applying for. Be confident in your abilities, but avoid being arrogant or overbearing.

• Maintain eye contact with the interviewer and use positive body language.
• Express your enthusiasm for the position and the company.

4. Ask Thoughtful Questions

At the end of the interview, you will likely be given the opportunity to ask questions. This is your chance to demonstrate your interest and learn more about the position and the company. Prepare thoughtful questions that show you’re engaged and genuinely interested in the role.

• Ask about the company’s growth plans or recent industry developments.
• Inquire about the company’s training and development opportunities.

5. Follow Up

After the interview, send a thank-you note to the interviewer within 24 hours. Express your appreciation for their time and reiterate your interest in the position. You can also use this opportunity to clarify any points or provide additional information that you may have forgotten to mention during the interview.

• Keep the thank-you note brief and professional.
• Reiterate your key skills and qualifications, and how they align with the position.