Editing What The Heck What Is Audi G28

How to Replace an [http://rvolchansk.ru/user/nurseeagle3/ audi a5 key fob] G28 Engine Speed Sensor<br><br>In this video, Charles the Humble Mechanic demonstrates 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 the ECU via an uncolored wire (T55/49) and then to the tachometer located in the instrument cluster.<br><br>1. Engine Speed Sensor<br><br>The grey wire is situated on the outside of the transmission, above the flywheel ring. The sensor transmits an electrical signal through the grey wire to pin T55/49. The ECU then utilizes this information to regulate the flow of fuel, timig and boost. It also sends an alert to the G5 Tachometer in instrument cluster.<br><br>The sensor is used as a reference for comparing with the G40 Camshaft Position Sensor. The ecu must know when the crankshaft is TDC and where the camshaft is so it can activate spark and injectors according to the situation.<br><br>If this sensor fails the ECU will display a P00160 code which means the Crank Shaft and Intake Camshaft are out of sync and could indicate the chain is stretched or a jump link on the upper timing chain. However,  [https://pantrytheory19.bravejournal.net/a-the-complete-guide-to-audi-a1-key-replacement-from-start-to-finish audi Car Keys replacement] the code won't appear on its own, without additional information from other sensors (G4 and G40).<br><br>Testing is a bit tricky as there are two different pins for the connector and they serve different purposes however the best method to test it is to measure resistance between the sensor and the ECU. When the sensor is operational, it should be reading around 1000 ohms. If you are having problems with this part, check for signs of oil or  [https://www.wulanbatuoguojitongcheng.com/home.php?mod=space&uid=313615 audi Car Key] coolant in the connector bay.<br><br>2. Injectors<br><br>Yesterday, while accelerating at full speed from the highway paytoll i had massive power loss like the engine is running out of gas or the injectors aren't firing anymore. Today, i pulled out the spark plugs, three were soaked with gazoline and the fourth one was dry. When I start the engine with no sparks, i place a tissue on the top of each of the injector holes and the 3 drenched with gazoline pop out, but the 4th stays shut. I tested the ground connection on ECU pins 14/55,30/55 and 48/55 I got zero ohm. I'm assuming that the issue is in another location.<br><br>I also tried to reset PID without success. The car will start when the G28 is unplugged, and it is running fine with the G28 connected. However the intermittent misfire issue persists at higher RPM. The temperature sensor for the coolant (G62) shows the wrong temperature value of -49c, even if I unplug it. Also, i noticed that the gauge for oil pressure in the cockpit shows 2 bar while the actual pressure is 0.0 if i crank up the engine.<br><br>I'm not sure what to do. I believe that I've ruled everything else out. I'm concerned that i may have missed something. Let me know if you have any ideas! TIA!<br><br>3. Fuel Pump<br><br>The fuel pump in the g28 is activated by a signal sent by the RPM sensor. The GM-style sensor is identical to the G4 and both are used in the 80, 100 200, UrS and RS2 cars which is why you can easily locate one at a junkyard or in a local parts store. It is easy to test them: simply put your DMM into resistance mode and test the distance between pins 1 and 2 (with the bump at the connector end facing up). They must be infinite Ohms.<br><br>4. ECU<br><br>The ECU of our 20vt turbo (3B AAN ABY) engines needs to know the position and speed of the crankshaft to determine timing of fuel injectors, etc. It makes use of a Crank Position Sensor G4 and an Engine Speed Sensor G28 to achieve this. If either of these goes wrong, you will receive codes on the diagnostic scanner that can cause the engine to shut down.<br><br>The signs of a failed G28 sensor are an inaccurate rev counter for the gearbox the gears are shifting faster than normal, and/or a misfire when you're in gear. It is likely that the sensor is failing and requires to be replaced if you experience any of these signs. They're inexpensive and easy to locate especially in the case of an Bosch unit like ours. Alternatively, GM's version of this part is an excellent choice.<br><br>5. Tachometer<br><br>A faulty engine speed sensor could be the cause of many problems in your vehicle. It is a crucial part of the [http://tongcheng.jingjincloud.cn/home.php?mod=space&uid=305559 audi replacement key]'s transmission since it relays information to the ECU about how fast or slow the car's crankshaft is rotating. This sensor could cause the transmission to fail and other car components to be affected.<br><br>The G5 engine sensor is located at the edge of the transmission, over the flywheel ring. It transmits a signal via gray wire to ECU pin T55/49. The ECU then uses and processes the signal to control fuel, timig, and boost, and also transmitting it to the G5 Tachometer located in the instrument cluster. You can check the sensor for failure by examining the 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]) and between pin T6a/1 and the instrument cluster pin T26a/12. You should see approximately 1000 ohms resistance between these two points. This is a standard part that is found across the [https://designhawk07.werite.net/the-most-effective-advice-youll-ever-get-about-audi-spare-key audi replacement key cost] 80 100 200, UrS and RS2 range from 1985 MC through the 1997 UrS AAN and 1995 RS2 ADU so good parts could be found in wrecking yards.