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 does my Mercury engine sound different?

Strange engine sounds can be a sign something’s off in your Mercury Grand Marquis. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage a Mercury engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercury Grand Marquis engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, 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.

Can I use water in my Mercury Grand Marquis radiator?

While it’s not recommended, you can use water in your Grand Marquis radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What could cause my Grand Marquis engine to 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?

Your local Firestone Complete Auto Care has you covered with expert Grand Marquis engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 1994 Mercury Grand Marquis

Learn about

1994 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 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 1994 Mercury Grand Marquis.

We’re Trained to Care for Mercury Grand Marquis Engines

Mercury Grand Marquis drivers trust that their Grand Marquis will take them near and far. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Things can go sideways sometimes. When they do, you might find yourself searching for 1994 Mercury Grand Marquis engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Mercury Grand Marquis engine will be in good hands. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Illuminated Check Engine Light on 1994 Mercury Grand Marquis

As soon as your Grand Marquis check engine light turns on, it’s time to get an expert’s opinion. A steady or flashing check engine light could signal a serious issue with your car’s starter, Causes may include a faulty oxygen sensor, damaged spark plug, issues with your 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 we’ll figure out why that check engine light is giving you grief. engine pinging noises, oil leaks, or a sinking feeling that something’s wrong.

Mercury Grand Marquis Engine Repair

When your Mercury Grand Marquis 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. 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 drive easy knowing that we use Mercury-approved parts and fluids — timing chain or belt, engine oil seal, ignition coil, or another part.

Engine Q&A 1994 Mercury Grand Marquis

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 does my Mercury engine sound different? Strange engine sounds can be a sign something’s off in your Mercury Grand Marquis. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a Mercury engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercury Grand Marquis engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, 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.
Can I use water in my Mercury Grand Marquis radiator? While it’s not recommended, you can use water in your Grand Marquis radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What could cause my Grand Marquis engine to 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? Your local Firestone Complete Auto Care has you covered with expert Grand Marquis engine repair. Schedule an appointment today and see us at one of our thousands of locations.