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

Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Buick Regal engine noises bad?

Strange engine sounds can be a sign something’s off in your Buick Regal. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my Buick Regal 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 accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I use water in my Buick Regal radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What can cause the engine in my Regal to suddenly stop?

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

Who repairs Buick Regal engines?

Your local Firestone Complete Auto Care fixes Buick Regal engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 2003 Buick Regal Engines

Learn about

2003 Buick Regal Trim Options

Select your Buick Regal trim level to learn more about Buick-recommended engine repair. Even Buick Regal parts will get older and change.

V6/3.8L

2003 Buick Regal Repair

Nothing stays the same forever. Even your Buick Regal’s engine parts and components will change. We’re here to help when something stops working. Select a service or repair below to learn more about what we can do for your 2003 Buick Regal.

We Care for Buick Regal Engines

Buick Regal engines are known for their reliability. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Things can go wrong on the road. When they do, you might find yourself searching for 2003 Buick Regal engine repair or replacement parts. 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 Buick Regal engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

My 2003 Buick Regal Check Engine Light Is On

If your Regal 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 car’s ignition, Causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or an engine vacuum leak, to name a few possible causes. Bring your Regal in for an on-board diagnostic check and our expert techs will get the root of the problem. Other signs it's time for Buick Regal engine service might include essential fluid leaks, or a sinking feeling that something’s wrong.

2003 Regal Engine Services

If your 2003 Buick Regal 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 repair can wait, we'll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We seek to give you all the info you need to make a smart decision about our services. Turn to Firestone Complete Auto Care for your 2003 Regal engine repairs and you can feel good knowing that we only use Buick-compliant replacement parts such as the timing chain or belt, engine oil seal, ignition coil, or other parts.

2003 Buick Regal Engine Q&A

Why does the check engine light come on when I start my Regal? Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Buick Regal engine noises bad? Strange engine sounds can be a sign something’s off in your Buick Regal. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my Buick Regal 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 accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I use water in my Buick Regal radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What can cause the engine in my Regal to suddenly stop? Reasons your Regal car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who repairs Buick Regal engines? Your local Firestone Complete Auto Care fixes Buick Regal engines. Book an appointment today! We have thousands of locations across the country.