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

It’s usually normal for your check engine light to turn on upon ignition. It’s just your Eldorado firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why does my Cadillac engine sound different?

Strange engine sounds can be a sign something’s off in your Cadillac Eldorado. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage a Cadillac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Cadillac Eldorado 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 accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Can I use water in my Cadillac Eldorado radiator?

While it’s not recommended, you can use water in your Eldorado radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What could cause my Eldorado engine to suddenly stop?

There are different reasons your Eldorado vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Where can I go for Cadillac Eldorado repair?

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.

Engine Repairs for Your 1990 Cadillac Eldorado

Learn about

1990 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.

V8/4.5L

Repairs for Your 1990 Cadillac Eldorado

Nothing stays the same 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 1990 Cadillac Eldorado services.

We Care for Cadillac Eldorado Engines

The Cadillac Eldorado is respected for its reliability. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go wrong on the road. If they do, you’ll have to find a dependable 1990 Cadillac service center — quick! That's when it's time to head to Firestone Complete Auto Care. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Cadillac Eldorado engine will be in good hands. 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 1990 Cadillac Eldorado

An illuminated check engine light on your Cadillac Eldorado is one of the first signs it's time to 'brake' for engine service. A check engine light that’s on or flashing could be a symptom of a serious problem in your car’s ignition, Causes may include a faulty oxygen sensor, worn spark plug, issues with your catalytic converter, or a leaking engine vacuum, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your Eldorado issues diagnosed and we'll determine exactly why your check engine light is on. Other signs it's time for Cadillac Eldorado engine service might include burning smells, or a sinking feeling that something’s wrong.

1990 Eldorado Engine Services

When your Cadillac Eldorado engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We never do any work without your sign-off. If a repair isn’t urgent right now, we’ll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 1990 Eldorado engine repairs and you can feel confident knowing that we use Cadillac-approved parts and components like the cambelt, valve guide seal, sensors, or a different component.

1990 Cadillac Eldorado Engine Q&A

Why does the check engine light in my Eldorado turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. It’s just your Eldorado firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why does my Cadillac engine sound different? Strange engine sounds can be a sign something’s off in your Cadillac Eldorado. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a Cadillac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Cadillac Eldorado 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 accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Can I use water in my Cadillac Eldorado radiator? While it’s not recommended, you can use water in your Eldorado radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What could cause my Eldorado engine to suddenly stop? There are different reasons your Eldorado vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Where can I go for Cadillac Eldorado repair? 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.