Why does the check engine light in my 420SEL turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your 420SEL firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my Mercedes-Benz 420SEL making engine noise?

Unusual noises can signal a problem with your Mercedes-Benz 420SEL engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my Mercedes-Benz 420SEL engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Is it okay to put water in my Mercedes-Benz 420SEL radiator?

It’s not recommended you put water in your 420SEL radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

What can cause the engine in my 420SEL to suddenly stop?

There are different reasons your 420SEL 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.

Who fixes Mercedes-Benz 420SEL engines?

Your local Firestone Complete Auto Care fixes Mercedes-Benz 420SEL engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 1987 Mercedes-Benz 420SEL Engines

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1987 Mercedes-Benz 420SEL Trim Options

Select your Mercedes-Benz 420SEL trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V8/4.2L

Mercedes-Benz 420SEL Repairs and Services

Stuff wears out. Even your Mercedes-Benz 420SEL's many parts and pieces. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 1987 Mercedes-Benz 420SEL repairs.

We Know Mercedes-Benz 420SEL Engines

Mercedes-Benz 420SEL engines are known for their reliability. You may have even been thinking about that when you bought it. Even so, pieces and parts can break down over time. Things can go sideways sometimes. When they do, you might find yourself searching for 1987 Mercedes-Benz 420SEL engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. We've serviced more than 500 million vehicles since 1926, and our technicians know Mercedes-Benz 420SEL 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.

Illuminated Check Engine Light on 1987 Mercedes-Benz 420SEL

An illuminated check engine light on your Mercedes-Benz 420SEL is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your fuel, Causes may include a faulty oxygen sensor, bad spark plug, a clogged catalytic converter, or a leaking engine vacuum, but that's only a few of the possible causes. Bring your 420SEL to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. Other signs it's time for Mercedes-Benz 420SEL engine service might include burning smells, or misfiring.

1987 420SEL Engine Services

If your 1987 Mercedes-Benz 420SEL needs engine repair, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. If a repair isn’t urgent right now, we’ll let you know. We'll also tell you if it's necessary for your safety. We want to give you all the details you need to make an informed decision about your engine repairs. Choose Firestone Complete Auto Care for Mercedes-Benz 420SEL engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — serpentine belt, engine oil seal, sensors, or another part.

Questions About 1987 Mercedes-Benz 420SEL Engines

Why does the check engine light in my 420SEL turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. It’s just your 420SEL firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my Mercedes-Benz 420SEL making engine noise? Unusual noises can signal a problem with your Mercedes-Benz 420SEL engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my Mercedes-Benz 420SEL engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Is it okay to put water in my Mercedes-Benz 420SEL radiator? It’s not recommended you put water in your 420SEL radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
What can cause the engine in my 420SEL to suddenly stop? There are different reasons your 420SEL 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.
Who fixes Mercedes-Benz 420SEL engines? Your local Firestone Complete Auto Care fixes Mercedes-Benz 420SEL engines. Book an appointment today! We have thousands of locations across the country.