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

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Cougar firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Mercury Cougar engine noises bad?

Unusual noises can signal a problem with your Mercury Cougar engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by 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 Cougar engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.

Can I put water in my Mercury Cougar 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 Cougar when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What could cause my Cougar engine to suddenly stop?

If your Cougar 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 Cougar repair?

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

Reliable Repairs for 1986 Mercury Cougar Engines

Learn about

1986 Mercury Cougar Trim Options

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

L4/2.3L

V6/3.8L

V8/5.0L

1986 Mercury Cougar Repair

Stuff wears out. Even your Mercury Cougar's many parts and pieces. When something breaks, we're ready. Select a service or repair below to learn more about what we can do for your 1986 Mercury Cougar.

We Care for Mercury Cougar Engines

Mercury Cougar engines are known for their reliability. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Things can go wrong on the road. If the unexpected strikes, you may search the internet frantically for quick and affordable 1986 Mercury Cougar engine repairs. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced more than 500 million vehicles since 1926, and our technicians know Mercury Cougar 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.

Illuminated Check Engine Light on 1986 Mercury Cougar

As soon as your Cougar 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, Possible causes can include a failing oxygen sensor, worn spark plug, issues with your catalytic converter, or an engine vacuum leak, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your Cougar issues diagnosed and our expert techs will get the root of the problem. engine pinging noises, oil leaks, or engine misfiring.

1986 Cougar Engine Services

When your Mercury Cougar 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 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 Cougar engine repairs and you can drive easy knowing that we use Mercury-approved parts and fluids — timing belt, engine oil seal, sensors, or other parts.

Questions About 1986 Mercury Cougar Engines

Why does the check engine light come on when I start my Cougar? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your Cougar firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Mercury Cougar engine noises bad? Unusual noises can signal a problem with your Mercury Cougar engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by 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 Cougar engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.
Can I put water in my Mercury Cougar 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 Cougar when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What could cause my Cougar engine to suddenly stop? If your Cougar 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 Cougar repair? Your local Firestone Complete Auto Care has you covered with expert Cougar engine repair. Schedule an appointment today and see us at one of our thousands of locations.