Why does the check engine light come on when I start my I35?

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your I35 firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my Infiniti I35 making engine noise?

Unusual noises can signal a problem with your Infiniti I35 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. 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 my Infiniti I35 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I put water in my Infiniti I35 radiator?

It’s not recommended you put water in your I35 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

What could cause my I35 engine to suddenly stop?

If your I35 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Where can I go for Infiniti I35 repair?

Your local Firestone Complete Auto Care fixes Infiniti I35 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 2003 Infiniti I35

Learn about

2003 Infiniti I35 Trim Options

Select your Infiniti I35 trim level to learn more about Infiniti-recommended engine repair. Use the following chart to find information.

V6/3.5L

2003 Infiniti I35 Repair

Nothing lasts forever. Even your Infiniti I35’s engine parts and components will change. When something breaks, we're ready. Select a repair or category to learn more about 2003 Infiniti I35 services.

We’re Trained to Care for Infiniti I35 Engines

Infiniti I35 engines are known for their reliability. You probably thought about that when you got it. 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! Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced more than 500 million vehicles since 1926, and our technicians know Infiniti I35 engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 2003 Infiniti I35 Check Engine Light Is On

An illuminated check engine light on your Infiniti I35 is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your car’s ignition, Causes may include a faulty oxygen sensor, worn spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your I35 issues diagnosed and our expert techs will get the root of the problem. Other signs your Infiniti I35 engine needs some TLC are oil leaks, or misfiring.

2003 I35 Engine Services

If your 2003 Infiniti I35 needs engine repair, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. If a repair can wait, we'll let you know. We'll also tell you if it's necessary for your safety. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 2003 I35 engine repairs and you can drive easy knowing that we use Infiniti-approved parts and fluids — serpentine belt, valve guide seal, ignition coil, or a different component.

Questions About 2003 Infiniti I35 Engines

Why does the check engine light come on when I start my I35? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your I35 firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my Infiniti I35 making engine noise? Unusual noises can signal a problem with your Infiniti I35 engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. 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 my Infiniti I35 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I put water in my Infiniti I35 radiator? It’s not recommended you put water in your I35 radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
What could cause my I35 engine to suddenly stop? If your I35 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Where can I go for Infiniti I35 repair? Your local Firestone Complete Auto Care fixes Infiniti I35 engines. Book an appointment today! We have thousands of locations across the country.