Why won't my Mustang battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my dead Mustang battery?

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

What’s the cost of DieHard batteries for Ford Mustangs?

Ford Mustang batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.

How long is a car battery good for?

Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.

Why is there white, crusty buildup on my Mustang’s battery post?

The white, crusty stuff that can accumulate around Mustang 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.

How do I clean corrosion off my Mustang vehicle battery?

To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your Mustang owner’s manual for instructions on how to do so.

Where can I find a battery for my Mustang?

Your local Firestone Complete Auto Care sells and installs Mustang batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

Car Batteries for 1991 Ford Mustang

Get a New Ford Battery

Ford Mustang Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 1991 Ford Mustang at Firestone Complete Auto Care.

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1991 Ford Mustang Battery Replacement & Size

Not sure what battery to get for your Ford Mustang? Use the following chart to find information on Ford Mustang battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
58-2	V8/5.0L	Replacement 24 months	Performance months	550
58-2	L4/2.3L	Replacement 24 months	Performance months	550

BATTERIES
V8/5.0L - Battery: 58-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550
L4/2.3L - Battery: 58-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550

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Shopping for Ford Mustang Car Batteries

Your Mustang doesn't have an expiration date, but its battery does. The average car battery lasts three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Ford Mustang stranded. Pay attention to clues that your battery is on its way out. A lagging starter, an illuminated battery or check engine light, swollen battery case, corroded battery terminals, and subpar electrical performance can all be signs that your battery is waving goodbye.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With computerized testing we can see how much charge is left in your battery. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 1991 Ford Mustang running! Car batteries are only one of our many strong suits. Our technicians are well-acquainted with Ford’s service specs for Mustang battery CCAs and reserve capacity. Get help identifying the type and size of battery that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your Mustang?

Your Ford Mustang deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard Mustang batteries surpass expectations using the latest innovative technology to fuel the increasing power needs of new vehicles and their accessories. They're no ordinary battery, they're extraordinary. Buy a DieHard battery for your Ford Mustang and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your Mustang’s New Battery Last

Did you recently have a new 1991 Ford Mustang car battery installed? Good thinking! Give your new car battery the best start with proper care. turning off all of the lights when you leave your vehicle, decreasing the number of short trips you take, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Commonly Asked Mustang Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a battery question that's unique to your Ford Mustang battery, stop by your nearest store. Our technicians are happy to help.

Why won't my Mustang battery stay charged? A car battery that needs to be jump-started every time is as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my dead Mustang battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
What’s the cost of DieHard batteries for Ford Mustangs? Ford Mustang batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.
How long is a car battery good for? Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.
Why is there white, crusty buildup on my Mustang’s battery post? The white, crusty stuff that can accumulate around Mustang 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.
How do I clean corrosion off my Mustang vehicle battery? To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your Mustang owner’s manual for instructions on how to do so.
Where can I find a battery for my Mustang? Your local Firestone Complete Auto Care sells and installs Mustang batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.