Why does my QX4’s check engine light come on when I start it?

Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my Infiniti QX4 making engine noise?

Strange engine sounds can be a sign something’s off in your Infiniti QX4. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage a Infiniti engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Infiniti QX4 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Can I use water in my Infiniti QX4 radiator?

While it’s not recommended, you can use water in your QX4 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What can cause the engine in my QX4 to suddenly stop?

There are different reasons your QX4 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Who can repair my Infiniti QX4 engine?

Your local Firestone Complete Auto Care fixes Infiniti QX4 engines. Book an appointment today! We have thousands of locations across the country.

2003 Infiniti QX4 Engine Repair

Learn about

2003 Infiniti QX4 Trim Options

Select your Infiniti QX4 trim level to learn more about Infiniti-recommended engine repair. Even Infiniti QX4 parts will get older and change.

V6/3.5L

Repairs for Your 2003 Infiniti QX4

Nothing stays the same forever. Even your Infiniti QX4’s engine parts and components will change. We’re here to help when something stops working. Click on a repair below to learn more about 2003 Infiniti QX4 repairs.

We’re Trained to Care for Infiniti QX4 Engines

Infiniti QX4 engines are known for their reliability. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Things can go sideways sometimes. If they do, you’ll have to find a dependable 2003 Infiniti service center — quick! That's when it's time to head to Firestone Complete Auto Care. We've serviced more than 500 million vehicles since 1926, and our technicians know Infiniti QX4 engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

My 2003 Infiniti QX4 Check Engine Light Is On

An illuminated check engine light on your Infiniti QX4 is one of the first signs it's time to 'brake' for engine service. A check engine light that’s on or flashing could be a symptom of a serious problem in your fuel, Potential causes may include a faulty oxygen sensor, damaged spark plug, a problem with your catalytic converter, or a leaking engine vacuum, but that's only a few of the possible causes. Stop by your local Firestone Complete Auto Care to get your QX4 issues diagnosed and we’ll figure out why that check engine light is giving you grief. Other signs your Infiniti QX4 engine needs some TLC are oil leaks, or misfiring.

Infiniti QX4 Engine Repair

When your Infiniti QX4 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. If a repair can wait, we'll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to provide you with the information you need to make an informed engine repair decision. Choose Firestone Complete Auto Care for Infiniti QX4 engine repairs and you can feel confident knowing that we use Infiniti-approved parts and components like the serpentine belt, motor oil seal, ignition coil, or a different component.

Questions About 2003 Infiniti QX4 Engines

Why does my QX4’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my Infiniti QX4 making engine noise? Strange engine sounds can be a sign something’s off in your Infiniti QX4. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a Infiniti engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Infiniti QX4 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Can I use water in my Infiniti QX4 radiator? While it’s not recommended, you can use water in your QX4 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What can cause the engine in my QX4 to suddenly stop? There are different reasons your QX4 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Who can repair my Infiniti QX4 engine? Your local Firestone Complete Auto Care fixes Infiniti QX4 engines. Book an appointment today! We have thousands of locations across the country.