Why does the check engine light in my Grand Marquis 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 just your Grand Marquis testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why does my Mercury engine sound different?

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. A high-pitched whistle could signal 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 Mercury Grand Marquis 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. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Is it okay to 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 repairs Mercury Grand Marquis engines?

For Mercury Grand Marquis engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

2008 Mercury Grand Marquis Engine Repair

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2008 Mercury Grand Marquis Trim Options

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

V8/4.6L

Mercury Grand Marquis Repairs and Services

Nothing stays the same forever. Even your Mercury Grand Marquis’s engine parts and components will change. We’re here to help when something stops working. Select a service or repair below to learn more about what we can do for your 2008 Mercury Grand Marquis.

We Care for Mercury Grand Marquis Engines

The Mercury Grand Marquis is respected for its reliability. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Sometimes plans go sideways. If they do, you’ll have to find a dependable 2008 Mercury 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 millions of vehicles since 1926, and our professional technicians are trained to service Mercury Grand Marquis engines. Schedule an appointment if you're experiencing problems that could require engine repair. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Illuminated Check Engine Light on 2008 Mercury Grand Marquis

If your Grand Marquis check engine light is on, it’s time to get it looked at. A check engine light that’s flashing or steadily illuminated could point to problems with your car’s ignition, Possible causes can include a failing oxygen sensor, bad spark plug, a clogged catalytic converter, or an engine vacuum leak, to name a few potential sources. Bring your Grand Marquis in for an on-board diagnostic check and our expert techs will get the root of the problem. Other signs it's time for Mercury Grand Marquis engine service might include essential fluid leaks, or a sinking feeling that something’s wrong.

2008 Grand Marquis Engine Services

When your Mercury Grand Marquis engine needs repairs, 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 service can wait, we’ll make sure you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, 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 Mercury Grand Marquis engine repairs and you can feel confident knowing that we use Mercury-approved parts and components like the cambelt, engine oil seal, sensors, or a different component.

2008 Mercury Grand Marquis Engine Q&A

Why does the check engine light in my Grand Marquis 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 just your Grand Marquis testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why does my Mercury engine sound different? 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. A high-pitched whistle could signal 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 Mercury Grand Marquis 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. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Is it okay to 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 repairs Mercury Grand Marquis engines? For Mercury Grand Marquis engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.