Mercedes-Benz 190E Rough Idle

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my Mercedes-Benz 190E has a rough idle?

While there are a variety of reasons your Mercedes-Benz 190E has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
of the time it's
Vacuum Leak
of the time it's
Spark Plugs
of the time it's
Ignition Coil

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Related Mercedes-Benz 190E Questions

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Changed the plugs and wires due to skip this fixed it but very hard too start cold. this problem happens all the time
Hello. i've purchased a '93 190e in great condition with the exception that it is running rough and seems to misfire...

Mercedes-Benz 190E Rough Idle Repair Symptoms

A failing ignition coil will create misfires in the engine, and lead to hesitation, extreme power loss, engine stalling, poor fuel mileage, and illumination of the check engine ...Read More
As we discussed, spark plugs are necessary for any gasoline engine to run. When they fail, the engine is in a constant state of attempting to ignite air and fuel, but cannot. Th...Read More