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

It's okay if your check engine light comes on when you first start your vehicle. This is just your Cougar testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why does my Mercury engine sound different?

Strange under-the-hood noises can point to problems within your Mercury Cougar 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 Cougar 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. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I put water in my Mercury Cougar radiator?

While it’s not recommended, you can use water in your Cougar radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What could cause my Cougar engine to suddenly stop?

Your Cougar car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes Mercury Cougar engines?

Your local Firestone Complete Auto Care offers Mercury Cougar engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Engine Repairs for Your 1989 Mercury Cougar

Learn about

1989 Mercury Cougar Trim Options

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

V6/3.8L

Repairs for Your 1989 Mercury Cougar

Nothing lasts forever. Even your Mercury Cougar’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a repair or category to learn more about 1989 Mercury Cougar services.

We’re Trained to Care for Mercury Cougar Engines

Mercury Cougar drivers trust that their Cougar will take them near and far. You probably thought about that when you got it. Even so, pieces and parts can break down over time. Things can go wrong on the road. When they do, you might find yourself searching for 1989 Mercury Cougar engine repair or replacement parts. 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 Cougar 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.

Illuminated Check Engine Light on 1989 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 injection, Possible causes can include a failing oxygen sensor, bad spark plug, issues with your catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Bring your Cougar to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. engine pinging noises, oil leaks, or misfiring.

Mercury Cougar Engine Repair

If your 1989 Cougar engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We never do any work without your sign-off. If a repair isn’t urgent right now, we’ll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to provide you with the information you need to make an informed engine repair decision. By choosing Firestone Complete Auto Care for Cougar engine repairs and you can feel good knowing that we only use Mercury-compliant replacement parts such as the timing belt, valve guide seal, sensors, or another part.

1989 Mercury Cougar Engine Q&A

Why does the check engine light come on when I start my Cougar? It's okay if your check engine light comes on when you first start your vehicle. This is just your Cougar testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why does my Mercury engine sound different? Strange under-the-hood noises can point to problems within your Mercury Cougar 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 Cougar 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. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I put water in my Mercury Cougar radiator? While it’s not recommended, you can use water in your Cougar radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What could cause my Cougar engine to suddenly stop? Your Cougar car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes Mercury Cougar engines? Your local Firestone Complete Auto Care offers Mercury Cougar engine repair. Schedule an appointment today at one of our thousands of locations nationwide!