Why does the check engine light in my Q45 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. 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.

Are Infiniti Q45 engine noises bad?

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 sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my Infiniti Q45 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Is it okay to put water in my Infiniti Q45 radiator?

An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your Q45 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

Why did my Q45 engine suddenly stop?

Your Q45 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes Infiniti Q45 engines?

Your local Firestone Complete Auto Care offers Infiniti Q45 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

1991 Infiniti Q45 Engine Repair

Learn about

1991 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 1991 Infiniti Q45

Stuff wears out. Even your Infiniti Q45's many parts and pieces. When something breaks, we're ready. Select a service or repair below to learn more about what we can do for your 1991 Infiniti Q45.

We Care for Infiniti Q45 Engines

Infiniti Q45 drivers trust that their Q45 will take them near and far. You may have even been thinking about that when you bought it. However, even your trustworthy engine is subject to wear and tear. Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 1991 Infiniti Q45 engine repairs. 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 Q45 engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

My 1991 Infiniti Q45 Check Engine Light Is On

An illuminated check engine light on your Infiniti Q45 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 or emission system that won't go away on its own. Potential causes may include a faulty oxygen sensor, bad spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few possible causes. Bring your Q45 in for an on-board diagnostic check and we’ll figure out why that check engine light is giving you grief. engine pinging noises, oil leaks, or engine misfiring.

Engine Repairs for Your 1991 Q45

When your Infiniti Q45 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We make recommendations, but you make the final decision. If a service can wait, we’ll make sure you know. If it's necessary for your safety, we'll make sure you understand that, too. We seek to give you all the info you need to make a smart decision about our services. 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 timing belt, valve guide seal, ignition coil, or another part.

Questions About 1991 Infiniti Q45 Engines

Why does the check engine light in my Q45 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. 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.
Are Infiniti Q45 engine noises bad? 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 sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my Infiniti Q45 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Is it okay to put water in my Infiniti Q45 radiator? An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your Q45 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
Why did my Q45 engine suddenly stop? Your Q45 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes Infiniti Q45 engines? Your local Firestone Complete Auto Care offers Infiniti Q45 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!