TDI A4 Jerking: Throttle Position Sensor Issue?

Translated on 24-10-2026, 6:03.

Hello, I'm having a problem with a 2.0 TDI 143 hp engine.

Severe shaking and vibration starting at 1500-2100 RPM under load.
"Feels" like a broken 2M swing, but it's not.

"Throttle position absolute" should always be at [value] while driving.
87.1% - Okay?
No error entry.

Does anyone have a tip?

Translated on 24-10-2026, 6:04.

Hello,

What is the mileage of the vehicle?

You should check if the injectors are functioning correctly and are properly sealed to the cylinder head. The following topic provides information on how to assess the injectors, including normal values:
Ich kann den Inhalt dieser URL nicht abrufen, da ich keinen Zugriff auf das Internet habe. Bitte gib mir den Text, den du übersetzt haben möchtest.

Furthermore, it is possible that there is insufficient compression or mechanical damage to individual cylinders.

Regarding the throttle valve: Check if the actual air mass value follows the desired air mass value in the area where the engine is misfiring. This will help determine if the throttle valve is defective and causing uncontrolled jerking.

Best regards, Rainer.

Translated on 24-10-2026, 6:06.

dieselschrauber wrote:

...
You should check if the injectors are functioning correctly and are properly sealed to the cylinder head. Here is a topic with normal values for assessing the injectors:
Ich kann den Inhalt dieser URL nicht abrufen, da ich keinen Zugriff auf externe Websites habe. Bitte gib den Text, den du übersetzt haben möchtest, direkt an.

...

For obvious reasons, the topic only includes values from functioning engines.