Why does the check engine light come on when I start my Mountaineer?

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Mountaineer firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are Mercury Mountaineer engine noises bad?

Unusual noises can signal a problem with your Mercury Mountaineer engine. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

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

Can I add water to my Mercury Mountaineer radiator?

It’s not recommended you put water in your Mountaineer 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 Mountaineer engine to suddenly stop?

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

Where can I go for Mercury Mountaineer repair?

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

Reliable Repairs for 2010 Mercury Mountaineer Engines

Learn about

2010 Mercury Mountaineer Trim Options

Select your Mercury Mountaineer trim level to learn more about Mercury-recommended engine repair. Even Mercury Mountaineer parts will get older and change.

V6/4.0L

V8/4.6L

Repairs for Your 2010 Mercury Mountaineer

Nothing stays the same forever. Even your Mercury Mountaineer’s engine parts and components will change. When something breaks, we're ready. Click on a repair below to learn more about 2010 Mercury Mountaineer repairs.

We Know Mercury Mountaineer Engines

The Mercury Mountaineer is respected for its reliability. That might be why you bought it in the first place. 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 2010 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 Mountaineer engine will be in good hands. 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.

My 2010 Mercury Mountaineer Check Engine Light Is On

An illuminated check engine light on your Mercury Mountaineer is one of the first signs it's time to 'brake' for engine service. A check engine light that’s on or flashing could be a symptom of a serious problem in your car’s ignition, Potential 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 Mountaineer issues diagnosed and we’ll figure out why that check engine light is giving you grief. engine rattling, oil leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 2010 Mountaineer

If your 2010 Mercury Mountaineer needs engine repair, our expert techs will let you know what needs to be done and why before they get started. We don't start working until we have your approval. If a repair can wait, we'll let 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 Mountaineer engine repairs and you can feel good knowing that we only use Mercury-compliant replacement parts such as the serpentine belt, valve guide seal, sensors, or another part.

Questions About 2010 Mercury Mountaineer Engines

Why does the check engine light come on when I start my Mountaineer? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Mountaineer firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are Mercury Mountaineer engine noises bad? Unusual noises can signal a problem with your Mercury Mountaineer engine. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a Mercury engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercury Mountaineer 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.
Can I add water to my Mercury Mountaineer radiator? It’s not recommended you put water in your Mountaineer 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 Mountaineer engine to suddenly stop? Reasons your Mountaineer car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Where can I go for Mercury Mountaineer repair? Your local Firestone Complete Auto Care has you covered with expert Mountaineer engine repair. Schedule an appointment today and see us at one of our thousands of locations.