This video is an answer to how to find idle speed on a single injection B 3 Passat. Frequently asked, tired of constantly writing the same thing, so I decided to record a video. Well, and a little more about this matter. Look, if your Passat has problems with idle, you should do this. 1) Check the gasket under the single injection. 2) Throttle position sensor. 3) Idle speed controller. 4) Temperature sensor that goes to the brains (DAS control unit). Some have a 4-pin. 5) Intake air temperature sensor, which is on the injector. But you can bypass it. 6) Fuel injector. Lied, either poorly sprays or overflows. 7) Fuel pressure. High overflows, low does not add, from this and jumps, but this will also affect the traction of the car. 8) Throttle valve, if there is a lot of play on it, then you will not find idle, the gap between the body and the valve will change and the idle will change because of this, you can cure it with a bushing or a new rod. 9) Hall sensor in the distributor, I had this on one, the signal did not pass at low revs and sometimes there were misfires on some cylinders, because of this the idle floated, but it was the idle at revs that everything was normal. 10) Absorber. If it is clogged or missing, it will affect idle. I have not encountered this, but there is such an opinion. 11) Wiring malfunction. Any wire that goes to any sensor can break inside the braid and will not provide contact, accordingly, it will work intermittently. Or oxidation of the contact itself in the connector. 12) Malfunctions in the engine control unit. On one Passat a small resistor burned out inside, but this is the very last thing you should get into 13) Winter-summer valve. Heating the intake air from the manifold in winter has a very strong effect on the fuel mixture. And in general on the operation of the internal combustion engine. 14) Correct installation of timing belt marks. 15) Ignition is set by the distributor earlier or later. It seems I remembered everything that I encountered on the Passat B 3. Single injection is a delicate matter and, as experts say, very simple. And it is for these reasons that I have carburetors on my Passats. Then they are very complex, more complicated than single injection.))) Look what I found on Ali, a selection on this topic, look, read and choose what you like in terms of quality and price. 1) Throttle Position Sensor TPS for VW Golf GL, Monoponto Jetta Passat Seat Skoda, Citroen, Audi 80, Renault, Peugeot Lancia 037907385A https://ali.ski/rIN3TW 2) ​​Idle Air Control Valve for VW, Citroen, Peugeot, Fiat, Lancia, Renault, Volvo, Skoda Seat https://ali.ski/Vay0I 3) High Voltage Wires 4 Cyl. for Audi 80, 100 (44), VW Passat B3, B4, Golf 2, 3, Jetta 2, Vento https://ali.ski/3Jl5k5 3) Engine Coolant Temperature Sensor for Golf https://ali.ski/gf8eD 4) Shhworldsea Air Conditioning Pressure Sensor Switch Cable for VW Passat B5 S4 A4 A6 https://ali.ski/DS8YgV Good luck to you all with your monitors. A tambourine and a soldering iron in your hands. Also look at this topic. How to adjust idle speed on a Passat B3 mono injection. mono injection, part 1. • How to adjust idle speed on a mon... The mono injection does not hold idle on a Passat B 3. Repair of mono injection on a Passat B 3. • The mono injection does not hold idle on a Passa...