The 3 Greatest Moments In Audi G28 History
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How to Replace an Audi Key Fob Replacement Cost 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 above the flywheel ring gear. It transmits a signal to the ECU through an uncolored wire T55/49, then to the tachometer in the instrument cluster.
1. Engine Speed Sensor
Located on the edge of the transmission, above the flywheel ring gear G28 Engine Speed Sensor sends an electrical signal to ECU pin T55/49 via an uncolored wire. The ECU then utilizes this information to regulate the flow of fuel, timig and boost. It also sends an indication to the G5 Tachometer in instrument cluster.
The sensor is used to link with the G40 Camshaft position Sensor. The ecu must be aware when the crankshaft is TDC and the location of the camshaft so it can start spark and injectors accordingly.
If this sensor fails, the ECU will display an error code P00160 which indicates that the Crank Shaft and Intake Camshaft aren't in sync, possibly indicating the chain is stretched or a jump 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).
Testing is a bit tricky because there are two connector pins, and they have different functions but the most effective method to test it is by measuring resistance between the sensor and the ECU. It should read approximately 1000 ohms if the sensor is operating at its maximum. Check for evidence of coolant or oil in the connector bay if there are problems with this part.
2. Injectors
Yesterday accelerating full speed from highway paytoll i had massive power loss like the engine is out of gas or injectors aren't firing any more. I pulled out the spark plugs this morning, three were soaked with gasoline and the 4th was dry. When I crank the engine with no sparks i put tissue on top of each injector hole and the 3 drenched with gazoline leap out, however the 4th stays shut. I inspected the ground connection on ECU pins 14/55/30/55/48/55/14/55/48/ i get 0ohm. Therefore, i think the issue is elsewhere.
I also tried to reset PID but without success. The car will start if the G28 is unplugged and runs fine when it is connected, but still is experiencing intermittent misfires at higher RPM. The coolant sensor (G62), even when unplugged, still shows a temperature of -49c. Also i noticed that the gauge for oil pressure in the cockpit is showing 2 bar, whereas the actual pressure is 0.0 when i rev the engine.
I'm not certain what to do, but i believe that i've ruled out everything else. However, i'm afraid that i might have missed something. If anyone has any ideas please let me know! TIA!
3. Fuel Pump
The fuel pump of the g28 receives a signal from the RPM sensor. The GM-style sender is the same as the G4 and both are used in the 80 100 200, repaired UrS and RS2 cars so you can easily find one at a wrecking yard or at a parts store. Test them out by putting your DMM in resistance mode and measure between pins 1 (with the bump on the connector end up) and 2 (2nd from the left on the black end of the connector). They must be infinite Ohms.
4. ECU
The ECU of our 20vt turbo (3B AAN ABY) engines needs to be aware of the speed and position of the crankshaft in order to make a decision about timing of the fuel injector, etc. It makes use of a Crank Position Sensor G4 and an Engine Speed Sensor G28 to accomplish this. If either of these go badly, you will see codes on the diagnostic scanner that can lead to engine shutdown.
A failing G28 sensor could cause an inaccurate speed counter for your gearbox or a gearbox that shifts more quickly than normal, or an unfire when in the gear. It is likely that your sensor is failing and needs to be replaced if you experience any of these symptoms. They're inexpensive and easy to locate, especially when they're a Bosch model like ours. Alternately, GM's version this part would be a good option.
5. Tachometer
A damaged engine sensor could cause a number of problems in your car. It's a crucial component of the transmission of your audi tt key fob not working because it relays information to the ECU on how fast or slowly the car's engine is turning. This sensor can cause the transmission to malfunction and other car components to be affected.
The G5 engine speed sensor is situated on the edge of the transmission just above the flywheel ring gear and transmits a signal to the ECU at pin T55/49 through an uncolored wire. The ECU then processes this signal to control fuel, timig and boost and then transmitting it to the G5 tachometer in the instrument cluster. You can test the sensor for failure by checking continuity between it and the tachometer, between the ECU pin T55/49 and the instrument cluster connection via pin T6a/1 (trace [79]) and between pin T6a/1 and the instrument cluster pin T26a/12. There should be a resistance of approximately 1000 ohms between these two points. This is the same across the audi tt key 80-100-200-RS2 range, audi Key replacement cost Uk beginning with the 1985 MC and up to the 1997 UrS AN and the 1995 RS2 DU You may also find some good ones in wrecking yards.
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 above the flywheel ring gear. It transmits a signal to the ECU through an uncolored wire T55/49, then to the tachometer in the instrument cluster.
1. Engine Speed Sensor
Located on the edge of the transmission, above the flywheel ring gear G28 Engine Speed Sensor sends an electrical signal to ECU pin T55/49 via an uncolored wire. The ECU then utilizes this information to regulate the flow of fuel, timig and boost. It also sends an indication to the G5 Tachometer in instrument cluster.
The sensor is used to link with the G40 Camshaft position Sensor. The ecu must be aware when the crankshaft is TDC and the location of the camshaft so it can start spark and injectors accordingly.
If this sensor fails, the ECU will display an error code P00160 which indicates that the Crank Shaft and Intake Camshaft aren't in sync, possibly indicating the chain is stretched or a jump 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).
Testing is a bit tricky because there are two connector pins, and they have different functions but the most effective method to test it is by measuring resistance between the sensor and the ECU. It should read approximately 1000 ohms if the sensor is operating at its maximum. Check for evidence of coolant or oil in the connector bay if there are problems with this part.
2. Injectors
Yesterday accelerating full speed from highway paytoll i had massive power loss like the engine is out of gas or injectors aren't firing any more. I pulled out the spark plugs this morning, three were soaked with gasoline and the 4th was dry. When I crank the engine with no sparks i put tissue on top of each injector hole and the 3 drenched with gazoline leap out, however the 4th stays shut. I inspected the ground connection on ECU pins 14/55/30/55/48/55/14/55/48/ i get 0ohm. Therefore, i think the issue is elsewhere.
I also tried to reset PID but without success. The car will start if the G28 is unplugged and runs fine when it is connected, but still is experiencing intermittent misfires at higher RPM. The coolant sensor (G62), even when unplugged, still shows a temperature of -49c. Also i noticed that the gauge for oil pressure in the cockpit is showing 2 bar, whereas the actual pressure is 0.0 when i rev the engine.
I'm not certain what to do, but i believe that i've ruled out everything else. However, i'm afraid that i might have missed something. If anyone has any ideas please let me know! TIA!
3. Fuel Pump
The fuel pump of the g28 receives a signal from the RPM sensor. The GM-style sender is the same as the G4 and both are used in the 80 100 200, repaired UrS and RS2 cars so you can easily find one at a wrecking yard or at a parts store. Test them out by putting your DMM in resistance mode and measure between pins 1 (with the bump on the connector end up) and 2 (2nd from the left on the black end of the connector). They must be infinite Ohms.
4. ECU
The ECU of our 20vt turbo (3B AAN ABY) engines needs to be aware of the speed and position of the crankshaft in order to make a decision about timing of the fuel injector, etc. It makes use of a Crank Position Sensor G4 and an Engine Speed Sensor G28 to accomplish this. If either of these go badly, you will see codes on the diagnostic scanner that can lead to engine shutdown.
A failing G28 sensor could cause an inaccurate speed counter for your gearbox or a gearbox that shifts more quickly than normal, or an unfire when in the gear. It is likely that your sensor is failing and needs to be replaced if you experience any of these symptoms. They're inexpensive and easy to locate, especially when they're a Bosch model like ours. Alternately, GM's version this part would be a good option.
5. Tachometer
A damaged engine sensor could cause a number of problems in your car. It's a crucial component of the transmission of your audi tt key fob not working because it relays information to the ECU on how fast or slowly the car's engine is turning. This sensor can cause the transmission to malfunction and other car components to be affected.
The G5 engine speed sensor is situated on the edge of the transmission just above the flywheel ring gear and transmits a signal to the ECU at pin T55/49 through an uncolored wire. The ECU then processes this signal to control fuel, timig and boost and then transmitting it to the G5 tachometer in the instrument cluster. You can test the sensor for failure by checking continuity between it and the tachometer, between the ECU pin T55/49 and the instrument cluster connection via pin T6a/1 (trace [79]) and between pin T6a/1 and the instrument cluster pin T26a/12. There should be a resistance of approximately 1000 ohms between these two points. This is the same across the audi tt key 80-100-200-RS2 range, audi Key replacement cost Uk beginning with the 1985 MC and up to the 1997 UrS AN and the 1995 RS2 DU You may also find some good ones in wrecking yards.
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