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. It’s just your Marquis firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my Mercury Marquis making engine noise?

Strange engine sounds can be a sign something’s off in your Mercury Marquis. 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 a sign of brake problems rather than engine issues.

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. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I 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 could cause my 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.

Where can I go for Mercury Marquis repair?

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.

Engine Repairs for Your 1986 Mercury Marquis

Learn about

1986 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

Nothing stays the same forever. Even your Mercury Marquis's many parts and pieces. 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 1986 Mercury Marquis.

We Care for Mercury Marquis Engines

Mercury Marquis drivers trust that their 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. If they do, you’ll have to find a dependable 1986 Mercury service center — quick! That's when it's time to head to Firestone Complete Auto Care. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Mercury Marquis engine will be in good hands. 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 1986 Mercury Marquis Check Engine Light Is On

If your Marquis check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your vehicle's ignition, Causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leaking engine vacuum, to name a few possible causes. Bring your Marquis in for an on-board diagnostic check and our expert techs will get the root of the problem. rattling sounds, essential fluid leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 1986 Marquis

If your 1986 Mercury Marquis needs engine repair, 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 repair can wait, we'll let 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. By choosing Firestone Complete Auto Care for Marquis engine repairs and you can feel good knowing that we only use Mercury-compliant replacement parts such as the timing chain or belt, motor oil seal, ignition coil, or another part.

Questions About 1986 Mercury Marquis Engines

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. It’s just your Marquis firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my Mercury Marquis making engine noise? Strange engine sounds can be a sign something’s off in your Mercury Marquis. 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 a sign of brake problems rather than engine issues.
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. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I 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 could cause my 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.
Where can I go for Mercury Marquis repair? 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.