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

It’s usually normal for your check engine light to turn on upon ignition. 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.

Are Mercury Mystique engine noises bad?

Strange engine sounds can be a sign something’s off in your Mercury Mystique. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. 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 Mystique 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 accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I add water to my Mercury Mystique radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What can cause a Mystique engine to suddenly stop?

There are different reasons your Mystique vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Who can repair my Mercury Mystique engine?

Your local Firestone Complete Auto Care fixes Mercury Mystique engines. Book an appointment today! We have thousands of locations across the country.

1999 Mercury Mystique Engine Repair

Learn about

1999 Mercury Mystique Trim Options

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

L4/2.0L

V6/2.5L

Mercury Mystique Repairs and Services

Nothing stays the same forever. Even your Mercury Mystique'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 1999 Mercury Mystique.

We’re Trained to Care for Mercury Mystique Engines

Mercury Mystique engines are known for their reliability. You may have even been thinking about that when you bought it. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. If they do, you’ll have to find a dependable 1999 Mercury service center — quick! That’s where Firestone Complete Auto Care comes in. We've serviced more than 500 million vehicles since 1926, and our technicians know Mercury Mystique 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.

Check Engine Light on 1999 Mercury Mystique

As soon as your Mystique check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your vehicle's ignition, Possible causes can include a failing oxygen sensor, damaged spark plug, a clogged catalytic converter, or an engine vacuum leak, to name a few possible causes. Bring your Mystique to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. Other signs it's time for Mercury Mystique engine service might include oil leaks, or a sinking feeling that something’s wrong.

1999 Mystique Engine Services

If your 1999 Mystique engine needs repairs, 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. We'll also tell you if it's necessary for your safety. 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 Mystique engine repairs and you can feel confident knowing that we use Mercury-approved parts and components like the serpentine belt, oil gasket, sensors, or other parts.

Questions About 1999 Mercury Mystique Engines

Why does the check engine light in my Mystique turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. 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.
Are Mercury Mystique engine noises bad? Strange engine sounds can be a sign something’s off in your Mercury Mystique. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. 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 Mystique 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 accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I add water to my Mercury Mystique radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What can cause a Mystique engine to suddenly stop? There are different reasons your Mystique vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Who can repair my Mercury Mystique engine? Your local Firestone Complete Auto Care fixes Mercury Mystique engines. Book an appointment today! We have thousands of locations across the country.