Why does the check engine light in my Eldorado turn on when I start my car?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your Eldorado testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my Cadillac Eldorado making engine noise?

Strange engine sounds can be a sign something’s off in your Cadillac Eldorado. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage a Cadillac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Cadillac Eldorado engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I put water in my Cadillac Eldorado 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 Eldorado to suddenly stop?

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

Who repairs Cadillac Eldorado engines?

Your local Firestone Complete Auto Care has you covered with expert Eldorado engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Reliable Repairs for 1999 Cadillac Eldorado Engines

Learn about

1999 Cadillac Eldorado Trim Options

Select your Cadillac Eldorado trim level to learn more about Cadillac-recommended engine repair. Use the following chart to find information.

V8/4.6L

Repairs for Your 1999 Cadillac Eldorado

Nothing lasts forever. Even your Cadillac Eldorado’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a repair or category to learn more about 1999 Cadillac Eldorado services.

We Know Cadillac Eldorado Engines

The Cadillac Eldorado is respected for its reliability. You probably thought about that when you got it. However, even your trustworthy engine is subject to wear and tear. Things can go sideways sometimes. When they do, you might find yourself searching for 1999 Cadillac Eldorado 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 more than 500 million vehicles since 1926, and our technicians know Cadillac Eldorado engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Check Engine Light on 1999 Cadillac Eldorado

As soon as your Eldorado check engine light turns on, it’s time to get an expert’s opinion. A steady or flashing check engine light could signal a serious issue with your or emission system, and it won’t go away by ignoring it. Causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your Eldorado in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. engine rattling, oil leaks, or misfiring.

Cadillac Eldorado Engine Repair

When your Cadillac Eldorado engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. 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 want to provide you with the information you need to make an informed engine repair decision. By choosing Firestone Complete Auto Care for Eldorado engine repairs and you can drive easy knowing that we use Cadillac-approved parts and fluids — timing chain or belt, valve guide seal, fuses, or a different component.

Questions About 1999 Cadillac Eldorado Engines

Why does the check engine light in my Eldorado turn on when I start my car? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your Eldorado testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my Cadillac Eldorado making engine noise? Strange engine sounds can be a sign something’s off in your Cadillac Eldorado. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a Cadillac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Cadillac Eldorado engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I put water in my Cadillac Eldorado 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 Eldorado to suddenly stop? Reasons your Eldorado car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who repairs Cadillac Eldorado engines? Your local Firestone Complete Auto Care has you covered with expert Eldorado engine repair. Schedule an appointment today and see us at one of our thousands of locations.