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

It's okay if your check engine light comes on when you first start your vehicle. 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?

Strange engine sounds can be a sign something’s off in your Mercury Mountaineer. 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 my Mercury Mountaineer engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I use water in my Mercury Mountaineer 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 the engine in my Mountaineer 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.

Who repairs Mercury Mountaineer engines?

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

1999 Mercury Mountaineer Engine Repair

Learn about

1999 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

V8/5.0L

Mercury Mountaineer Repairs and Services

Stuff wears out. Even your Mercury Mountaineer'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 Mountaineer.

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, the wear-proof engine has yet to be invented! Things can go wrong on the road. If they do, you’ll have to find a dependable 1999 Mercury service center — quick! Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. 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 a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 1999 Mercury Mountaineer Check Engine Light Is On

As soon as your Mountaineer 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 fuel injection, Causes may include a faulty oxygen sensor, damaged spark plug, a problem with your catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Stop by your local Firestone Complete Auto Care to get your Mountaineer issues diagnosed and we'll determine exactly why your check engine light is on. engine rattling, essential fluid leaks, or a sinking feeling that something’s wrong.

1999 Mountaineer Engine Services

If your 1999 Mercury Mountaineer needs engine repair, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. 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 want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for Mountaineer engine repairs and you can feel confident knowing that we use Mercury-approved parts and components like the serpentine belt, valve guide seal, sensors, or a different component.

Engine Q&A 1999 Mercury Mountaineer

Why does the check engine light come on when I start my Mountaineer? It's okay if your check engine light comes on when you first start your vehicle. 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? Strange engine sounds can be a sign something’s off in your Mercury Mountaineer. 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 my Mercury Mountaineer engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I use water in my Mercury Mountaineer 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 the engine in my Mountaineer 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.
Who repairs Mercury Mountaineer engines? Your local Firestone Complete Auto Care fixes Mercury Mountaineer engines. Book an appointment today! We have thousands of locations across the country.