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How to Replace an [https://mendez-kvist.hubstack.net/this-is-the-myths-and-facts-behind-audi-replacement-key/ audi car key case] G28 Engine Speed Sensor<br><br>Charles the Humble Technician teaches how to replace the G28 Engine Speed Sensor. The sensor is situated at the top of the transmission above the flywheel ring gear. It transmits a signal to the ECU via an uncolored wire T55/49, then to the tachometer in the instrument cluster.<br><br>1. Engine Speed Sensor<br><br>The grey wire is located at the edges of the transmission, just above the flywheel ring. The sensor sends signals through the grey wire to pin T55/49. The ECU uses this information to control the amount of fuel and boost. It also sends an indication to the G5 Tachometer located in the instrument cluster.<br><br>The sensor serves as a reference point to connect with the G40 Camshaft Position Sensor. The ecu needs to be aware of when the crankshaft has reached TDC, and the location of the camshaft so that it can activate the spark and injectors.<br><br>If this sensor fails, the ECU will display an error code P00160 which indicates that the Crank Shaft and Intake Camshaft are out of sync and possibly indicating chain stretch or a jumped link on the upper chain of timing. However, the error code won't appear on its own without additional information from other sensors (G4 and G40).<br><br>Testing can be a bit difficult because there are two pins for the connector and they serve different purposes but the most effective way to test it is by measuring resistance between the sensor and the ECU. When the sensor is fully operational, it should be reading around 1000 ohms. If you're experiencing issues with this sensor, look for evidence of coolant or oil in the connector bay.<br><br>2. Injectors<br><br>Yesterday, when i was accelerating to the fullest speed from highway paytoll, i experienced massive power loss like the engine is running out of gas or the injectors aren't firing anymore. I took out the spark plugs this morning, three were drenched in gasoline and the 4th was dry. I placed a tissue over each injector hole, and when i start the engine with no sparks, the three that have gazoline pop right out. The 4th one remains closed. I checked the ground connection of ECU pins 14,30, and 48/55. I got 0ohm. So i assume the problem is somewhere else.<br><br>I also tried to reset the PID without success. The car will start when the G28 is disconnected, but it works fine when the G28 plugged in. However the intermittent misfire issue continues to occur at higher RPM. The coolant sensor (G62), even if it is not plugged in, shows an ice temperature of -49c. I also noticed that the oil gauge in the cockpit shows 2 bar but the actual pressure is zero.<br><br>I'm not sure what to do, as i feel i have pretty much eliminated everything else. I'm afraid i may have missed something. If anyone has any suggestions, please share them! TIA!<br><br>3. Fuel Pump<br><br>The fuel pump in the g28 receives a signal from the RPM sensor. The GM-style sender is identical to the G4 and they both work in the 80 100, 200, UrS and RS2 cars so you can easily find one at a junkyard or in a local parts store. It is simple to test them - simply switch your DMM into resistance mode and determine the distance between pins 1 and 2 (with the bump at the connector's end facing up). They must be infinite Ohms.<br><br>4. ECU<br><br>Our 20vt turbo (3B, AAN, ABY and ADU) engines are equipped with an ECU that has to be aware of the speed and position of the crankshaft to make a decision about timing of the fuel injectors, etc. To do this, it makes use of a Crank Position Sensor (G4) and an Engine Speed Sensor (G28). If you encounter a problem with either of these, the diagnostic scanner will display the codes that could trigger the engine shutting down.<br><br>Some of the signs of a malfunctioning G28 sensor include an inaccurate rev counter in the gearbox the gears are shifting faster than normal and/or misfiring when you are in gear. If you have any of these problems, it is likely your sensor is going bad and requires [https://king-wifi.win/wiki/Whats_The_Most_Creative_Thing_Happening_With_Audi_G28 Replacement key audi]. They're cheap and easy to find particularly if they're a Bosch model like ours. Alternatively, the GM version of this unit is also a good option.<br><br>5. Tachometer<br><br>A failing engine sensor could cause a myriad of issues in your vehicle. It's an essential component of the transmission in your [https://opensourcebridge.science/wiki/What_Is_Audi_A3_Key_Replacement_And_How_To_Use_It audi a1 key] since it sends information to the ECU on how fast or slowly the engine is turning. If the sensor fails, it will cause problems for the transmission and the other car's components.<br><br>The G5 engine speed sensor is located on the edge of the transmission, above the flywheel ring gear and sends a signal to the ECU at pin T55/49 through an uncolored wire. The ECU is then able to process this signal to regulate fuel, timig, and boost, and also transmitting it to the G5 tachometer inside the instrument cluster. You can test the sensor [https://www.98e.fun/space-uid-9026783.html replacement key for audi] failure by checking continuity between it and the tachometer. You can also check continuity between ECU pin T55/49 and the instrument cluster connection on pin T6a/1 (trace [79]) as well as between T6a/1, and the instrument cluster pin T26a/12. It should show approximately 1000 ohms of resistance between those two pins. This is a common component across the [https://www.dermandar.com/user/locksudan51/ audi keys] 80 100 200, UrS and RS2 range from 1985 MC until the 1997 UrS AAN and 1995 RS2 ADU, so the best ones could be available in wrecking yards.