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

It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my Cadillac DeVille making engine noise?

Unusual noises can signal a problem with your Cadillac DeVille engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. 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 DeVille 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. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I use water in my Cadillac DeVille radiator?

While it’s not recommended, you can use water in your DeVille 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 can cause a DeVille engine to suddenly stop?

If your DeVille car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Who can repair my Cadillac DeVille engine?

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

Engine Repairs for Your 1990 Cadillac DeVille

Learn about

1990 Cadillac DeVille Trim Options

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

V8/4.5L

1990 Cadillac DeVille Repair

Nothing lasts forever. Even your Cadillac DeVille's many parts and pieces. We’re here to help when something stops working. Click on a repair below to learn more about 1990 Cadillac DeVille repairs.

We Care for Cadillac DeVille Engines

The Cadillac DeVille 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! Sometimes plans go sideways. If they do, you’ll have to find a dependable 1990 Cadillac service center — quick! That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Cadillac DeVille engine will be in good hands. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Illuminated Check Engine Light on 1990 Cadillac DeVille

If your DeVille 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 starter, Possible causes can include a failing oxygen sensor, worn spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your DeVille issues diagnosed and we'll determine exactly why your check engine light is on. engine rattling, oil leaks, or misfiring.

Cadillac DeVille Engine Repair

If your 1990 DeVille engine needs repairs, our technicians will provide you with a thorough explanation beforehand. 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 want to provide you with the information you need to make an informed engine repair decision. Turn to Firestone Complete Auto Care for your 1990 DeVille engine repairs and you can feel good knowing that we only use Cadillac-compliant replacement parts such as the serpentine belt, engine oil seal, sensors, or a different component.

Questions About 1990 Cadillac DeVille Engines

Why does the check engine light in my DeVille turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my Cadillac DeVille making engine noise? Unusual noises can signal a problem with your Cadillac DeVille engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. 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 DeVille 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. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I use water in my Cadillac DeVille radiator? While it’s not recommended, you can use water in your DeVille 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 can cause a DeVille engine to suddenly stop? If your DeVille car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who can repair my Cadillac DeVille engine? Your local Firestone Complete Auto Care has you covered with expert DeVille engine repair. Schedule an appointment today and see us at one of our thousands of locations.