tcpyd32@rxss1.jenniferlawrence.uk – https://www.thekeylab.co.uk/audi-car-keys/

How to Replace an Audi G28 Engine Speed SensorCharles the Humble Technician teaches you how to replace the G28 Engine Speed Sensor. The sensor is located on the edge of the transmission above the flywheel ring gear. It sends a message to the ECU through the grey wire T55/49 and then to the tachometer on the instrument cluster.1. Engine Speed SensorThe sensor is located at the edge of the transmission above the flywheel ring gear, the G28 Engine Speed Sensor sends an electrical signal to ECU pin T55/49 via an uncolored wire. The ECU utilizes this information to control fuel and boost. It also sends signals to the G5 Tachometer located in the instrument cluster.The sensor is used to connect the G40 Camshaft position Sensor. The ecu needs to know when the crankshaft is TDC and where the camshaft is so it can trigger spark and injectors according to the situation.If this sensor fails to function, the ECU will display an error code P00160. This means that the Crank Shaft is not in sync with the Intake Camshaft. It could also indicate a chain stretch or a jump in the chain link of the upper chain. However the code will not appear on its own, without additional information from other sensors (G4 and G40).It’s a bit tricky to test because there are several pins on the connector, and they all have different functions. The best way to do it is to measure the resistance between the ECU and the sensor. When the sensor is operational, it should read around 1000 ohms. Check for signs of coolant or oil in the connector bay if you are experiencing issues with this component.2. InjectorsYesterday, when i was accelerating to the fullest speed from highway paytoll i had massive power loss like the engine is out of gas or the injectors aren’t firing at all. I took out the spark plugs this morning and found that 3 were drenched in gasoline and the 4th was dry. When i crank the engine, there are no sparks, i place a tissue on the top of each of the injector holes and the 3 drenched with gazoline jump out but the 4th stays closed. I tried to test the ground connections of ECU pins 14,30 and 48/55. I got zero ohm. I’m assuming the issue is somewhere else.I also tried to reset the PID without success. The car can start if the G28 is not plugged in and runs fine when it is connected, but still has the intermittent misfire issue at higher RPM. The coolant temperature sensor (G62) shows the wrong temp value -49c even when i unplug it. I also noticed that the oil gauge in the cockpit shows 2 bars when the actual pressure is zero.I don’t know what to do. I believe that I’ve all other possibilities out. But i am afraid I may have missed something. If new audi key has any ideas please let me know! TIA!3. Fuel PumpThe fuel pump in the g28 receives signals from the RPM sensor. The GM-style sender is the same as the G4 and both are used in the 80 100, 200, UrS and RS2 cars so you can easily find one at a salvage yard or at a parts store. It is simple to test them to do – just put your DMM in resistance mode and measure the resistance between pins 1 (with the bump on the connector’s side up) and 2 (2nd from the left on the black connector’s side). They should be infinite Ohms.4. ECUThe ECU of our 20vt turbo (3B AAN ABY ADU) engines requires to be aware of the position and speed of the crankshaft to determine timing of the fuel injector, etc. In order to do this it makes use of a Crank Position Sensor (G4) and an Engine Speed Sensor (G28). If you are experiencing issues with either of these sensors, the diagnostic scanner will show codes that could cause an engine shutdown.A malfunctioning G28 sensor could cause an inaccurate speed counter for the gearbox or a gearbox that shifts faster than normal, and/or a misfire in the gear. If you experience any of these problems, it is most likely that your sensor is deteriorating and requires replacement. The good news is that they are very affordable and easy to find particularly if you’re looking at a Bosch model, which is what ours are. Alternatively, GM’s version of this part is an excellent choice.5. TachometerA malfunctioning engine speed sensor could be a cause for numerous issues with your car. It is an important part of the transmission of your Audi, as it transmits information to the ECU on how fast or slowly the engine is turning. If the sensor fails, it can cause problems for the transmission, as well as the rest of the car’s components.The G5 engine sensor is located at the edge of the transmission, just above the flywheel ring. It transmits an electrical signal through a gray wire to the ECU pin T55/49. The ECU utilizes this signal to control the amount of fuel and boost, and also timig. It also transmits it to the G5 Tachometer inside the instrument cluster. You can test the sensor for any failure by checking the continuity between it and the tachometer, between ECU pin T55/49 and the instrument cluster connection on pin T6a/1 (trace [79trace [79]) and between T6a/1 and the instrument cluster pin T26a/12. You should detect a resistance of approximately 1000 ohms in these areas. This is a common feature across the Audi 80-100-200-RS2 model, ranging from the 1985 MC all the way up to the 1997 UrS AN and 1995 RS2 DU So, you may find some good ones in wrecking yards.