Why won't my Mustang battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test 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.

How much do DieHard batteries cost for your Ford Mustang?

You can find affordable Mustang batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.

What is the average lifespan of a car battery?

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, flaky stuff around my Mustang’s battery post?

The white, flaky stuff that can build up around your Mustang’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your Mustang, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

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 purchase Mustang batteries near me?

You can shop for Mustang batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.

1990 Ford Mustang Batteries

Get a New Ford Battery

Get a New Ford Mustang Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 1990 Ford Mustang at Firestone Complete Auto Care.

Shop Batteries

The Right Battery Size for a 1990 Ford Mustang

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	L4/2.3L	Replacement 24 months	Performance months	550
58-2	V8/5.0L	Replacement 24 months	Performance months	550

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

Schedule an Appointment

Shopping for Ford Mustang Car Batteries

Sadly, your Ford Mustang won't last forever. Neither will its battery. Generally, car batteries last from three to five years. You want to replace your 1990 Ford Mustang battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A sluggish engine start, a blinking battery or check engine light, swollen battery case, corrosion-covered posts, or dim headlights may all indicate that your battery needs attention.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With computerized testing we can see how much charge is left in your battery. Stop by for a free battery test and, if necessary, a battery replacement to help keep your 1990 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 car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that's best for your Mustang, and schedule a fast car battery replacement at your earliest convenience.

Find the Right DieHard Battery for Your Mustang

We know what’s best for your Ford Mustang, which is why we carry just that. Your Mustang needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations and house the latest technology to fuel the growing power needs of new vehicles. They're no ordinary battery, they're extraordinary. Buy a DieHard battery for your Ford Mustang and drive with confidence knowing that performance will be there when you're counting on it. That's the kind of battery we deliver.

After Buying 1990 Ford Mustang Battery

Did you recently have a new 1990 Ford Mustang car battery installed? Great job! You can give your new battery a head start with proper care and attention. ensuring all the lights are turned off before you leave the car, 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

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a battery question that's unique to your Ford Mustang battery, pay us a visit. Our technicians have the answers.

Why won't my Mustang battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test 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.
How much do DieHard batteries cost for your Ford Mustang? You can find affordable Mustang batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.
What is the average lifespan of a car battery? 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, flaky stuff around my Mustang’s battery post? The white, flaky stuff that can build up around your Mustang’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your Mustang, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
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 purchase Mustang batteries near me? You can shop for Mustang batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.