Why won’t my Grand Marquis battery hold a charge?

A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old Grand Marquis battery?

We recycle it! Nearly 100% of all lead-acid batteries are recyclable.

How much do DieHard batteries cost for your Mercury Grand Marquis?

Get affordable prices on Mercury Grand Marquis batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.

What is the average lifespan of a car battery?

A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.

What is the white, crusty substance accumulating on my Grand Marquis’s battery post?

The white, crusty stuff that can accumulate around Grand Marquis car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.

What do I do about corrosion on my Grand Marquis car battery?

Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.

Where can I purchase Grand Marquis batteries near me?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Grand Marquis batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

Car Batteries for 1984 Mercury Grand Marquis

Get a New Mercury Battery

Get a Battery for Your Mercury Grand Marquis

Don’t let a dead battery stop you. Shop replacement car batteries for your 1984 Mercury Grand Marquis at Firestone Complete Auto Care.

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The Right Battery Size for a 1984 Mercury Grand Marquis

Researching battery replacements for your Mercury Grand Marquis? Check the chart to find the right car battery size and cold cranking amps for your Grand Marquis.

Battery	Engine	Warranty		Cold Cranking Amps
56-1	V8/5.0L	Replacement 24 months	Performance months	550
56-1	V8/5.8L	Replacement 24 months	Performance months	550

BATTERIES
V8/5.0L - Battery: 56-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550
V8/5.8L - Battery: 56-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550

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Shopping for Mercury Grand Marquis Car Batteries

Your Grand Marquis doesn't have an expiration date, but its battery does. On average, auto batteries last anywhere from three to five years. You want to replace your 1984 Mercury Grand Marquis battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A lagging starter, an illuminated battery or check engine light, swollen battery case, corroded battery terminals, or weak lights can all be signs that your battery is waving goodbye.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. Our equipment can see how much charge is left in your battery. Stop by for a free battery test and, if needed, a replacement battery for your 1984 Mercury Grand Marquis. Car batteries are one of our many specialties! Our technicians are familiar with Mercury-specific recommendations for Grand Marquis battery cold cranking amps and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your Grand Marquis?

Your Mercury Grand Marquis deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations and house the latest technology to fuel the increasing power needs of new vehicles. Don't call a DieHard battery ordinary. It's an extraordinary battery. Buy a DieHard battery for your Mercury Grand Marquis and drive with confidence knowing that performance will be there when you're counting on it. That’s why you should choose batteries from Firestone Complete Auto Care.

After Buying 1984 Mercury Grand Marquis Battery

Did you recently have a new 1984 Mercury Grand Marquis car battery installed? Good thinking! You can give your new battery a head start with proper care and attention. Give your new battery a hand by decreasing the number of short trips you take, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Answers to Your Grand Marquis Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a Grand Marquis-specific battery question, visit your nearest store. Our technicians are happy to help.

Why won’t my Grand Marquis battery hold a charge? A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my old Grand Marquis battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much do DieHard batteries cost for your Mercury Grand Marquis? Get affordable prices on Mercury Grand Marquis batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.
What is the average lifespan of a car battery? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
What is the white, crusty substance accumulating on my Grand Marquis’s battery post? The white, crusty stuff that can accumulate around Grand Marquis car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.
What do I do about corrosion on my Grand Marquis car battery? Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.
Where can I purchase Grand Marquis batteries near me? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Grand Marquis batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.