Why does my Q45’s check engine light come on when I start it?

It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why does my Infiniti engine sound different?

Strange under-the-hood noises can point to problems within your Infiniti Q45 engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage a Infiniti engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Infiniti Q45 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I add water to my Infiniti Q45 radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What can cause the engine in my Q45 to suddenly stop?

There are different reasons your Q45 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 repairs Infiniti Q45 engines?

Your local Firestone Complete Auto Care fixes Infiniti Q45 engines. Book an appointment today! We have thousands of locations across the country.

2004 Infiniti Q45 Engine Repair

Learn about

2004 Infiniti Q45 Trim Options

Select your Infiniti Q45 trim level to learn more about Infiniti-recommended engine repair. Use the following chart to find information.

V8/4.5L

Repairs for Your 2004 Infiniti Q45

Nothing stays the same forever. Even your Infiniti Q45’s engine parts and components will change. When something breaks, we're ready. Select a repair or category to learn more about 2004 Infiniti Q45 services.

We Care for Infiniti Q45 Engines

The Infiniti Q45 is respected for its reliability. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. When they do, you might find yourself searching for 2004 Infiniti Q45 engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Infiniti Q45 engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Illuminated Check Engine Light on 2004 Infiniti Q45

If your Q45 check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your or emission system that won't go away on its own. Causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your Q45 issues diagnosed and our expert techs will get the root of the problem. rattling sounds, essential fluid leaks, or engine misfiring.

Engine Repairs for Your 2004 Q45

If your 2004 Infiniti Q45 needs engine repair, our technicians will make sure you understand what’s going on before they start working on your engine. We don't start working until we have your approval. If a repair isn’t urgent right now, we’ll let you know. We'll also tell you if it's necessary for your safety. We want to provide you with the information you need to make an informed engine repair decision. Choose Firestone Complete Auto Care for Infiniti Q45 engine repairs and you can feel confident knowing that we use Infiniti-approved parts and components like the serpentine belt, motor oil seal, sensors, or other parts.

Questions About 2004 Infiniti Q45 Engines

Why does my Q45’s check engine light come on when I start it? It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why does my Infiniti engine sound different? Strange under-the-hood noises can point to problems within your Infiniti Q45 engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage a Infiniti engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Infiniti Q45 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I add water to my Infiniti Q45 radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What can cause the engine in my Q45 to suddenly stop? There are different reasons your Q45 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 repairs Infiniti Q45 engines? Your local Firestone Complete Auto Care fixes Infiniti Q45 engines. Book an appointment today! We have thousands of locations across the country.