Hello! This is my first thread here in the Audi Forum, since I exchanged my Opel for an Audi. Is an Audi 80 B4 with 90hp. Since I have the car (now almost 1 year) he always had the problem that he sporadically had a power loss. Especially when overtaking this has been totally annoying. Recently my petrol pump has blessed the time and after the installation of a new one he sometimes went very well forward (compared to before). So f I tried to look a little bit and put out a defective vacuum hose (at the intake manifold direction brake power amplifier) and exchanged it. I measured all sensors yesterday and apparently finally hit the black one: The intake air temperature sensor is totally over: yesterday morning at 10 °C had a value of almost 1 MOhm (compared to 4 kOhm the water temperature sensor). After a little cleaning he had then 6 kOhm, but is still too high. Now l I think the sensor is broken. So now my question: Can someone tell me how to remove the holder for the injection valve (in which the sensor is sitting)? Unfortunately, I found nothing on the board on the subject. Thank you very much for your answers, Berni