Why does the check engine light in my S40 turn on when I start my car?

Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are Volvo S40 engine noises bad?

Unusual noises can signal a problem with your Volvo S40 engine. Tapping or knocking could mean you're low on oil. 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 my Volvo S40 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 Volvo S40 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 S40 engine suddenly stop?

Your S40 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes Volvo S40 engines?

Your local Firestone Complete Auto Care fixes Volvo S40 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 2004 Volvo S40

Learn about

2004 Volvo S40 Trim Options

Select your Volvo S40 trim level to learn more about Volvo-recommended engine repair. Even Volvo S40 parts will get older and change.

L4/1.9L

L5/2.4L

L5/2.5L

2004 Volvo S40 Repair

Stuff wears out. Even your Volvo S40’s engine parts and components will change. When something breaks, we're ready. Select a repair or category to learn more about 2004 Volvo S40 services.

We Know Volvo S40 Engines

Volvo S40 engines are known for their 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 2004 Volvo service center — quick! That's when it's time to head to Firestone Complete Auto Care. We've serviced more than 500 million vehicles since 1926, and our technicians know Volvo S40 engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Check Engine Light on 2004 Volvo S40

An illuminated check engine light on your Volvo S40 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 or emission control system that won’t go away on its own. Possible causes can include a failing oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your S40 to Firestone Complete Auto Care to get computerized diagnostics and we’ll figure out why that check engine light is giving you grief. engine pinging noises, burning smells, or engine misfiring.

Engine Repairs for Your 2004 S40

When your Volvo S40 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. 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. Turn to Firestone Complete Auto Care for your 2004 S40 engine repairs and you can feel confident knowing that we use Volvo-approved parts and components like the cambelt, oil gasket, sensors, or a different component.

Questions About 2004 Volvo S40 Engines

Why does the check engine light in my S40 turn on when I start my car? Generally, your check engine light turning on upon ignition is not a bad thing. This is a sign that your vehicle is testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are Volvo S40 engine noises bad? Unusual noises can signal a problem with your Volvo S40 engine. Tapping or knocking could mean you're low on oil. 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 my Volvo S40 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 Volvo S40 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 S40 engine suddenly stop? Your S40 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes Volvo S40 engines? Your local Firestone Complete Auto Care fixes Volvo S40 engines. Book an appointment today! We have thousands of locations across the country.