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

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Grand Marquis firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why is my Mercury Grand Marquis making engine noise?

Strange engine sounds can be a sign something’s off in your Mercury Grand Marquis. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my Mercury Grand Marquis engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.

Can I put water in my Mercury Grand Marquis 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 Grand Marquis when you’re out of coolant, having water in the coolant reservoir is better than nothing.

Why did my Grand Marquis engine suddenly stop?

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

Who can repair my Mercury Grand Marquis engine?

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

Engine Repairs for Your 2006 Mercury Grand Marquis

Learn about

2006 Mercury Grand Marquis Trim Options

Select your Mercury Grand Marquis trim level to learn more about Mercury-recommended engine repair. Use the following chart to find information.

V8/4.6L

Repairs for Your 2006 Mercury Grand Marquis

Nothing lasts forever. Even your Mercury Grand Marquis’s engine parts and components will change. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 2006 Mercury Grand Marquis repairs.

We Know Mercury Grand Marquis Engines

Mercury Grand Marquis drivers trust that their Grand Marquis will take them near and far. You probably thought about that when you got it. However, even your trustworthy engine is subject to wear and tear. Things can go wrong on the road. If they do, you’ll have to find a dependable 2006 Mercury service center — quick! 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 Mercury Grand Marquis 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 2006 Mercury Grand Marquis Check Engine Light Is On

An illuminated check engine light on your Mercury Grand Marquis is one of the first signs it's time to 'brake' for engine service. A steady or flashing check engine light could signal a serious issue with your car’s ignition, Possible causes can include a failing oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leaking engine vacuum, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your Grand Marquis issues diagnosed and we'll determine exactly why your check engine light is on. engine rattling, essential fluid leaks, or misfiring.

Mercury Grand Marquis Engine Repair

If your 2006 Grand Marquis 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 isn’t urgent right now, 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 Mercury Grand Marquis engine repairs and you can feel good knowing that we only use Mercury-compliant replacement parts such as the serpentine belt, motor oil seal, ignition coil, or another part.

Questions About 2006 Mercury Grand Marquis Engines

Why does my Grand Marquis’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Grand Marquis firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why is my Mercury Grand Marquis making engine noise? Strange engine sounds can be a sign something’s off in your Mercury Grand Marquis. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my Mercury Grand Marquis engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.
Can I put water in my Mercury Grand Marquis 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 Grand Marquis when you’re out of coolant, having water in the coolant reservoir is better than nothing.
Why did my Grand Marquis engine suddenly stop? Your Grand Marquis car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who can repair my Mercury Grand Marquis engine? Your local Firestone Complete Auto Care fixes Mercury Grand Marquis engines. Book an appointment today! We have thousands of locations across the country.