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

It’s usually normal for your check engine light to turn on upon ignition. This is just your Cougar testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why is my Mercury Cougar making engine noise?

Strange engine sounds can be a sign something’s off in your Mercury Cougar. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my Mercury Cougar engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas 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.

Is it okay to put water in my Mercury Cougar radiator?

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

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

Who can repair my Mercury Cougar engine?

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.

Engine Repairs for Your 1991 Mercury Cougar

Learn about

1991 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.

V6/3.8L

V8/5.0L

Repairs for Your 1991 Mercury Cougar

Nothing stays the same forever. 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 1991 Mercury Cougar.

We Know Mercury Cougar Engines

Mercury Cougar engines are known for their reliability. You may have even been thinking about that when you bought it. Even so, pieces and parts can break down over time. Things can go wrong on the road. If the unexpected strikes, you may search the internet frantically for quick and affordable 1991 Mercury Cougar engine repairs. 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 Cougar engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Illuminated Check Engine Light on 1991 Mercury Cougar

If your Cougar check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your combustion, Causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your Cougar issues diagnosed and we’ll figure out why that check engine light is giving you grief. Other signs it's time for Mercury Cougar engine service might include burning smells, or misfiring.

Engine Repairs for Your 1991 Cougar

If your 1991 Mercury Cougar needs engine repair, our expert techs will let you know what needs to be done and why before they get started. We never do any work without your sign-off. If a service can wait, we’ll make sure you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 1991 Cougar engine repairs and you can feel good knowing that we only use Mercury-compliant replacement parts such as the serpentine belt, valve guide seal, fuses, or another part.

Questions About 1991 Mercury Cougar Engines

Why does the check engine light in my Cougar turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. This is just your Cougar testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why is my Mercury Cougar making engine noise? Strange engine sounds can be a sign something’s off in your Mercury Cougar. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my Mercury Cougar engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas 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.
Is it okay to put water in my Mercury Cougar radiator? It’s not recommended you put water in your Cougar 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 Cougar engine to suddenly stop? Reasons your Cougar car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who can repair my Mercury Cougar engine? 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.