RPM not constant

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micmul

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• Sep 7, 2017

• #1

Hey, I have a problem with my Audi A4 B6 2.0 with multitronic (2001). The RPM of the engine is not constant. This is happening when driving at a constant speed, and when accelerating, mainly under 2000 RPM. The range in RPM is about 50 RPM.

 

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• Sep 7, 2017

• #2

See a small movie here:

 

Spatula

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• Sep 13, 2017

• #3

Run Vag-com on it, and let us know what codes come up, if any. It could be something as simple as a dirty MAF. Try unplugging it and running under the same conditions, and see if it still does it.

 

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micmul

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• Sep 16, 2017

• #4

There are not any codes from the computer. I will try to unplug the sensor today.

 

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• Sep 16, 2017

• #5

It has improved a lot now, but it is not perfect. Should I clean the sensor?

 

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QuattroCalum

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• Sep 21, 2017

• #6

Try cleaning the MAF first using isopropyl alcohol or electrical cleaner spray as they won't leave any residue. If it's not any better replace the MAF sensor.