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

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 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 under-the-hood noises can point to problems within your Mercury Marquis engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Mercury 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. 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 Marquis radiator?

It’s not recommended you put water in your Marquis 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 can cause a Marquis engine to suddenly stop?

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

Who fixes Mercury Marquis engines?

For Mercury 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.

1984 Mercury Marquis Engine Repair

Learn about

1984 Mercury Marquis Trim Options

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

L4/2.3L

V6/3.8L

Mercury Marquis Repairs and Services

Stuff wears out. Even your Mercury 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 1984 Mercury Marquis.

We Know Mercury Marquis Engines

Mercury Marquis drivers trust that their Marquis 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 wrong on the road. If they do, you’ll have to find a dependable 1984 Mercury service center — quick! That's when it's time to head to Firestone Complete Auto Care. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Mercury Marquis engines. Schedule a courtesy inspection at the first sign of engine trouble. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

My 1984 Mercury Marquis Check Engine Light Is On

If your 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 or emission system, and it won’t go away by ignoring it. Possible causes can include a failing oxygen sensor, damaged spark plug, issues with your catalytic converter, or a leak in the engine vacuum, to name a few possible causes. Bring your Marquis to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. Other signs it's time for Mercury Marquis engine service might include oil leaks, or misfiring.

1984 Marquis Engine Services

If your 1984 Mercury Marquis needs engine repair, 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 seek to give you all the info you need to make a smart decision about our services. By choosing Firestone Complete Auto Care for Marquis engine repairs and you can drive easy knowing that we use Mercury-approved parts and fluids — timing belt, oil gasket, fuses, or another part.

Engine Q&A 1984 Mercury Marquis

Why does my Marquis’s check engine light come on when I start it? 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 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 under-the-hood noises can point to problems within your Mercury Marquis engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Mercury 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. 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 Marquis radiator? It’s not recommended you put water in your Marquis 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 can cause a Marquis engine to suddenly stop? If your Marquis car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who fixes Mercury Marquis engines? For Mercury 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.