Why does the check engine light come on when I start my 300E?

It’s usually normal for your check engine light to turn on upon ignition. This is just your 300E testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why is my Mercedes-Benz 300E making engine noise?

Strange engine sounds can be a sign something’s off in your Mercedes-Benz 300E. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my Mercedes-Benz 300E engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I add water to my Mercedes-Benz 300E radiator?

An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your 300E when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause the engine in my 300E to suddenly stop?

If your 300E 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 fixes Mercedes-Benz 300E engines?

Your local Firestone Complete Auto Care offers Mercedes-Benz 300E engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Reliable Repairs for 1991 Mercedes-Benz 300E Engines

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1991 Mercedes-Benz 300E Trim Options

Select your Mercedes-Benz 300E trim level to learn more about Mercedes-Benz-recommended engine repair. Even Mercedes-Benz 300E parts will get older and change.

L6/2.6L

L6/3.0L

1991 Mercedes-Benz 300E Repair

Nothing lasts forever. Even your Mercedes-Benz 300E's many parts and pieces. We’re here to help when something stops working. Select a service or repair below to learn more about what we can do for your 1991 Mercedes-Benz 300E.

We’re Trained to Care for Mercedes-Benz 300E Engines

Mercedes-Benz 300E drivers trust that their 300E will take them near and far. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. If the unexpected strikes, you may search the internet frantically for quick and affordable 1991 Mercedes-Benz 300E engine repairs. 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 Mercedes-Benz 300E engine will be in good hands. Schedule a courtesy inspection at the first sign of engine trouble. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Illuminated Check Engine Light on 1991 Mercedes-Benz 300E

An illuminated check engine light on your Mercedes-Benz 300E 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 car’s starter, Potential causes may include a faulty oxygen sensor, damaged spark plug, a problem with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your 300E issues diagnosed and our expert techs will get the root of the problem. Other signs your Mercedes-Benz 300E engine needs some TLC are oil leaks, or misfiring.

Engine Repairs for Your 1991 300E

If your 1991 Mercedes-Benz 300E needs engine repair, 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 want to provide you with the information you need to make an informed engine repair decision. By choosing Firestone Complete Auto Care for 300E engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the timing chain or belt, valve guide seal, ignition coil, or a different component.

1991 Mercedes-Benz 300E Engine Q&A

Why does the check engine light come on when I start my 300E? It’s usually normal for your check engine light to turn on upon ignition. This is just your 300E testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why is my Mercedes-Benz 300E making engine noise? Strange engine sounds can be a sign something’s off in your Mercedes-Benz 300E. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my Mercedes-Benz 300E engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I add water to my Mercedes-Benz 300E radiator? An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your 300E when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause the engine in my 300E to suddenly stop? If your 300E 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 fixes Mercedes-Benz 300E engines? Your local Firestone Complete Auto Care offers Mercedes-Benz 300E engine repair. Schedule an appointment today at one of our thousands of locations nationwide!