Why does my LS’s check engine light come on when I start it?

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

Why does my Lincoln engine sound different?

Strange under-the-hood noises can point to problems within your Lincoln LS engine. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my Lincoln LS engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.

Can I put water in my Lincoln LS 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.

Why did my LS engine suddenly stop?

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

Who repairs Lincoln LS engines?

For Lincoln LS engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

Engine Repairs for Your 2003 Lincoln LS

Learn about

2003 Lincoln LS Trim Options

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

V6/3.0L

V8/3.9L

Repairs for Your 2003 Lincoln LS

Stuff wears out. Even your Lincoln LS’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 Lincoln LS.

We Care for Lincoln LS Engines

Lincoln LS drivers trust that their LS will take them near and far. You may have even been thinking about that when you bought it. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. When they do, you might find yourself searching for 2003 Lincoln LS engine repair or replacement parts. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Lincoln LS engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Illuminated Check Engine Light on 2003 Lincoln LS

As soon as your LS check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your car’s ignition, Possible causes can include a failing oxygen sensor, damaged spark plug, issues with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your LS issues diagnosed and we'll determine exactly why your check engine light is on. rattling sounds, oil leaks, or a sinking feeling that something’s wrong.

2003 LS Engine Services

When your Lincoln LS engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We make recommendations, but you make the final decision. If a service can wait, we’ll make sure you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for LS engine repairs and you can feel good knowing that we only use Lincoln-compliant replacement parts such as the serpentine belt, valve guide seal, ignition coil, or other parts.

2003 Lincoln LS Engine Q&A

Why does my LS’s check engine light come on when I start it? It's okay if your check engine light comes on when you first start your vehicle. This is just your LS testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why does my Lincoln engine sound different? Strange under-the-hood noises can point to problems within your Lincoln LS engine. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my Lincoln LS engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.
Can I put water in my Lincoln LS 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.
Why did my LS engine suddenly stop? Your LS car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who repairs Lincoln LS engines? For Lincoln LS engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.