Why does the check engine light in my Sunfire 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 Sunfire testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are Pontiac Sunfire engine noises bad?

Unusual noises can signal a problem with your Pontiac Sunfire engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have 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 Pontiac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Pontiac Sunfire 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 add water to my Pontiac Sunfire radiator?

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

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

Who can repair my Pontiac Sunfire engine?

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

Engine Repairs for Your 2004 Pontiac Sunfire

Learn about

2004 Pontiac Sunfire Trim Options

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

L4/2.2L

2004 Pontiac Sunfire Repair

Nothing stays the same forever. Even your Pontiac Sunfire's many parts and pieces. We’re here to help when something stops working. Click on a repair below to learn more about 2004 Pontiac Sunfire repairs.

We Care for Pontiac Sunfire Engines

Pontiac Sunfire drivers trust that their Sunfire will take them near and far. 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 2004 Pontiac Sunfire 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 Pontiac Sunfire 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 2004 Pontiac Sunfire Check Engine Light Is On

An illuminated check engine light on your Pontiac Sunfire is one of the first signs it's time to 'brake' for engine service. A steady or flashing check engine light could signal a serious issue with your car’s ignition, Possible causes can include a failing oxygen sensor, worn spark plug, a clogged catalytic converter, or a leaking engine vacuum, to name a few possible causes. Bring your Sunfire in for an on-board diagnostic check and our expert techs will get the root of the problem. engine rattling, oil leaks, or misfiring.

Pontiac Sunfire Engine Repair

When your Pontiac Sunfire 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 repair can wait, we'll let you know. We'll also tell you if it's necessary for your safety. We seek to give you all the info you need to make a smart decision about our services. Choose Firestone Complete Auto Care for Pontiac Sunfire engine repairs and you can feel good knowing that we only use Pontiac-compliant replacement parts such as the timing chain or belt, motor oil seal, ignition coil, or another part.

2004 Pontiac Sunfire Engine Q&A

Why does the check engine light in my Sunfire 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 Sunfire testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are Pontiac Sunfire engine noises bad? Unusual noises can signal a problem with your Pontiac Sunfire engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have 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 Pontiac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Pontiac Sunfire 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 add water to my Pontiac Sunfire radiator? While it’s not recommended, you can use water in your Sunfire 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 Sunfire engine to suddenly stop? Your Sunfire car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who can repair my Pontiac Sunfire engine? Your local Firestone Complete Auto Care has you covered with expert Sunfire engine repair. Schedule an appointment today and see us at one of our thousands of locations.