cannonfine74
User Name: You need to be a registered (and logged in) user to view username.
Total Articles : 0
https://articlescad.com/how-to-beat-your-boss-on-replacement-audi-key-233490.html
How to Replace an Audi G28 Engine Speed Sensor In this video Charles the Humble Mechanic demonstrates how to replace the G28 engine speed sensor This sensor is located on the edge of the transmission just above the flywheel ring gear It sends a signal to the ECU via the grey wire T5549 then to the tachometer within the instrument cluster 1 Engine Speed Sensor The grey wire is situated on the edge of transmission above the flywheel ring This sensor sends a signal via the grey wire to pin T5549 The ECU uses this information to regulate the amount of fuel and boost It also sends signals to the G5 Tachometer located in the instrument cluster The sensor is used to correlate with the G40 Camshaft position Sensor The ecu must be aware when the crankshaft is TDC and where the camshaft is located so that it can start spark and injectors accordingly If this sensor fails the ECU will throw an error code P00160 which indicates that the Crank Shaft and Intake Camshaft arent in sync possibly indicating chain stretch or a jumped link on the upper timing chain However the code wont appear on its own without additional information from other sensors G4 and G40 Its a bit tricky to test because there are various pins on the connector and they all have different functions The best way to do it is by measuring the resistance between the ECU and the sensor When the sensor is operational it should read about 1000 ohms If youre having issues with this sensor look for evidence of coolant or oil in the connector bay 2 Injectors Yesterday when i was accelerating to the fullest speed from highway paytoll i experienced an abrupt drop in power like the engine is running out of gas or the injectors are not firing any more I pulled out the spark plugs this morning and found that 3 were soaked with gasoline and the fourth was unclean I placed a tissue over each injector hole and when i turn the engine on without sparks the 3 with gazoline jump right out The 4th one stays shut I tested the ground connection of ECU pins 1430 and 4855 I got zero ohm I think the issue is in another location I also tried to reset PID without success The car will start when the G28 is disconnected but it runs fine with the G28 plugged in However the intermittent misfire issue still occurs at higher RPM The coolant temperature sensor G62 shows the wrong temperature of 49c even if I unplug it Also i noticed that the oil pressure gauge in the cockpit is showing 2 bar while the actual pressure is 00 when i rev the engine Im not sure what to do i think ive pretty much eliminated everything else However im afraid that I may have missed something Let me know if you have any ideas TIA 3 Fuel Pump The fuel pump in the g28 can be activated by a signal sent by the RPM sensor The GMstyle transmitter functions similarly to the G4 sender and both work on the 80100200 UrS and RS2 vehicles You can easily find the spare in a salvage shop or a parts store It is simple to test them by putting your DMM in resistance mode and take measurements between pins 1 with the bump on the connectors side up and 2 2nd from the left on the black connectors end They must be infinite Ohms 4 ECU The ECU in our 20vt turbo 3B AAN ABY ADU engines needs to know the position and speed the crankshaft in order to make a decision about timing of fuel injectors etc It uses a Crank Position Sensor G4 and an Engine Speed Sensor G28 to accomplish this If either of these go bad you will get codes on the diagnostic scanner that could cause engine shut down A failing G28 sensor could cause an inaccurate gearbox speed counter and a gearbox which shifts more quickly than normal or an unfire when in the gear It is probable that the sensor is failing and needs to be replaced if you experience any of these symptoms replacement car key audi is they are quite affordable and easy to find especially if youre looking at a Bosch sensor which is what ours are You can also choose the GM version of this part is also a good choice 5 Tachometer A malfunctioning engine sensor can cause a number of problems in your vehicle Its an essential component of your Audis transmission since it relays information to the ECU about how fast or slow the cars crankshaft is rotating When this sensor fails it can cause problems for the transmission as well as the rest of the cars components The G5 engine sensor is located at the edge of the transmission just above the flywheel ring It sends an electrical signal through gray wire to ECU pin T5549 The ECU uses this signal to regulate the flow of fuel and boost as well as timig It also sends it to the G5 Tachometer located in the instrument cluster You can check the sensor for any failure by checking the continuity between it and the tachometer between the ECU pin T5549 and the instrument cluster connection via pin T6a1 trace 79 and between pin T6a1 and the instrument cluster pin T26a12 You should observe approximately 1000 ohms resistance between these two points This part is common across the Audi 80100200RS2 series starting beginning with the 1985 MC and up to the 1997 UrS AN and the 1995 RS2 DU So you may find them in wrecking yards
