Why does the check engine light in my Grand Marquis turn on when I start my car?

Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why does my Mercury engine sound different?

Strange under-the-hood noises can point to problems within your Mercury Grand Marquis engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the 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 the engine while still in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Can I add water to 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.

What can cause the engine in my Grand Marquis to suddenly stop?

Reasons your Grand Marquis car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who repairs Mercury Grand Marquis engines?

Your local Firestone Complete Auto Care offers Mercury Grand Marquis engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

1986 Mercury Grand Marquis Engine Repair

Learn about

1986 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.

V8/5.0L

V8/5.8L

Repairs for Your 1986 Mercury Grand Marquis

Stuff wears out. Even your Mercury Grand Marquis's many parts and pieces. When something breaks or fails, we’re ready to help. Select a service or repair below to learn more about what we can do for your 1986 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. 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 1986 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. 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 1986 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 on or flashing could be a symptom of a serious problem in your fuel, Causes may include a faulty oxygen sensor, bad spark plug, issues with your 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 our expert techs will get the root of the problem. engine pinging noises, essential fluid leaks, or engine misfiring.

Engine Repairs for Your 1986 Grand Marquis

If your 1986 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. 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. Turn to Firestone Complete Auto Care for your 1986 Grand Marquis engine repairs and you can feel good knowing that we only use Mercury-compliant replacement parts such as the timing belt, motor oil seal, fuses, or a different component.

Questions About 1986 Mercury Grand Marquis Engines

Why does the check engine light in my Grand Marquis turn on when I start my car? Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why does my Mercury engine sound different? Strange under-the-hood noises can point to problems within your Mercury Grand Marquis engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the 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 the engine while still in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Can I add water to 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.
What can cause the engine in my Grand Marquis to suddenly stop? Reasons your Grand Marquis car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who repairs Mercury Grand Marquis engines? Your local Firestone Complete Auto Care offers Mercury Grand Marquis engine repair. Schedule an appointment today at one of our thousands of locations nationwide!