5 Laws Everyone Working In Audi G28 Should Be Aware Of
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How to Replace an audi tt key fob G28 Engine Speed Sensor
Charles the Humble Technician teaches you how to replace the G28 Engine Speed Sensor. This sensor is located on the edge of the transmission above the flywheel ring gear. It sends a signal to the ECU via the grey wire (T55/49) which is then sent to the tachometer within the instrument cluster.
1. Engine Speed Sensor
The sensor is located at the edge of the transmission, above the flywheel ring gear, the G28 Engine Speed Sensor sends a signal to ECU pin T55/49 via a grey wire. The ECU utilizes this information to regulate the amount of fuel and boost. It also sends an indication to the G5 Tachometer in instrument cluster.
The sensor is used to correlate the G40 Camshaft position Sensor. The ecu needs to know when the crankshaft is TDC and where the camshaft is located so that it can start spark and injectors in the right way.
If this sensor fails the ECU will show 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).
Testing is a bit tricky because there are two pins for the connector and they perform different functions but the best way to test it is by measuring resistance between the sensor and the ECU. It should read approximately 1000 ohms if the sensor is in full operation. Examine for signs of coolant or oil in the connector bay if you are experiencing issues with this part.
2. Injectors
Yesterday, when i was accelerating to the fullest speed from highway paytoll, i experienced massive power loss like the engine is out of gas or injectors aren't firing anymore. I pulled out the spark plugs this morning, three were soaked with gasoline and the 4th was dry. I put a piece of tissue over each hole in the injector and when i start the engine with no sparks, the 3 with gazoline jump out. The 4th one stays shut. I checked the ground connection of ECU pins 14,30, and 48/55. I found 0ohm. So i assume the problem is somewhere else.
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, fwme.eu the intermittent misfire problem continues to occur at higher RPM. The temperature sensor for coolant (G62) shows the wrong temp value -49c even when i unplug it. Also, i noticed that the oil pressure gauge in the cockpit shows 2 bar while the actual pressure is 0.0 when i rev the engine.
I'm not sure what to do, as i feel i have pretty much completely ruled out all other possibilities. However, i'm afraid that I may have missed something. Let me know should you have any suggestions! TIA!
3. Fuel Pump
The fuel pump of the g28 receives a signal from the RPM sensor. The GM-style transmitter is identical to the G4 sender and works on the 80,100,200, UrS, and RS2 vehicles. You can easily locate the spare in a salvage shop or a parts store. It is easy to test them - simply put your DMM into resistance mode and measure the distance between pins 1 and 2 (with the bump on the connector's edge facing up). They must be infinite Ohms.
4. ECU
The ECU in our 20vt turbo (3B AAN ABY) engines requires to know both the position and speed of the crankshaft to determine fuel injector timing, etc. It utilizes a Crank Position Sensor G4 and an Engine Speed Sensor G28 to accomplish this. If you have a problem with either one of these, the diagnostic scanner will show codes that could lead to an engine shutdown.
A failing G28 sensor could cause an inaccurate speed counter for your gearbox and a gearbox which shifts more quickly than normal, or a misfire in the gear. It is probable that the sensor is failing and requires to be replaced if you experience any of these symptoms. The good news is that they are very affordable and readily available, especially when you're looking at a Bosch sensor, which is what we have. You can also choose the GM version of this part is also a good choice.
5. Tachometer
A faulty engine speed sensor could be a cause for a slew of issues with your car. It is a crucial part of the audi a3 replacement key smart audi key replacement cost replacement - please click the next internet page,'s transmission because it communicates to the ECU about how fast or slow the vehicle's crankshaft is turning. When this sensor fails, it could disrupt the performance of the transmission and the rest of the car's components.
The G5 engine sensor is located at the edge of transmission, above the flywheel ring. It sends signals via gray wire to ECU pin T55/49. The ECU uses this signal to control the flow of fuel and boost and also timig. It also relays it to the G5 Tachometer inside the instrument cluster. You can determine if the sensor is in failure by examining the continuity of the sensor to the tachometer. Additionally, you can examine the continuity between pins T55/49 of the ECU and pin T6a/1 of the instrument cluster (trace [79trace [79]), and between pin T6a/1 and pin T26a/12. You should observe around 1000 ohms of resistance between these two points. This is the same across the audi key fob replacement cost 80-100-200-RS2 model, ranging from the 1985 MC up to the 1997 UrS AN and the 1995 RS2 DU You may also find some good ones in wrecking yards.
Charles the Humble Technician teaches you how to replace the G28 Engine Speed Sensor. This sensor is located on the edge of the transmission above the flywheel ring gear. It sends a signal to the ECU via the grey wire (T55/49) which is then sent to the tachometer within 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 a signal to ECU pin T55/49 via a grey wire. The ECU utilizes this information to regulate the amount of fuel and boost. It also sends an indication to the G5 Tachometer in instrument cluster.
The sensor is used to correlate the G40 Camshaft position Sensor. The ecu needs to know when the crankshaft is TDC and where the camshaft is located so that it can start spark and injectors in the right way.
If this sensor fails the ECU will show 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).
Testing is a bit tricky because there are two pins for the connector and they perform different functions but the best way to test it is by measuring resistance between the sensor and the ECU. It should read approximately 1000 ohms if the sensor is in full operation. Examine for signs of coolant or oil in the connector bay if you are experiencing issues with this part.
2. Injectors
Yesterday, when i was accelerating to the fullest speed from highway paytoll, i experienced massive power loss like the engine is out of gas or injectors aren't firing anymore. I pulled out the spark plugs this morning, three were soaked with gasoline and the 4th was dry. I put a piece of tissue over each hole in the injector and when i start the engine with no sparks, the 3 with gazoline jump out. The 4th one stays shut. I checked the ground connection of ECU pins 14,30, and 48/55. I found 0ohm. So i assume the problem is somewhere else.
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, fwme.eu the intermittent misfire problem continues to occur at higher RPM. The temperature sensor for coolant (G62) shows the wrong temp value -49c even when i unplug it. Also, i noticed that the oil pressure gauge in the cockpit shows 2 bar while the actual pressure is 0.0 when i rev the engine.
I'm not sure what to do, as i feel i have pretty much completely ruled out all other possibilities. However, i'm afraid that I may have missed something. Let me know should you have any suggestions! TIA!
3. Fuel Pump
The fuel pump of the g28 receives a signal from the RPM sensor. The GM-style transmitter is identical to the G4 sender and works on the 80,100,200, UrS, and RS2 vehicles. You can easily locate the spare in a salvage shop or a parts store. It is easy to test them - simply put your DMM into resistance mode and measure the distance between pins 1 and 2 (with the bump on the connector's edge facing up). They must be infinite Ohms.
4. ECU
The ECU in our 20vt turbo (3B AAN ABY) engines requires to know both the position and speed of the crankshaft to determine fuel injector timing, etc. It utilizes a Crank Position Sensor G4 and an Engine Speed Sensor G28 to accomplish this. If you have a problem with either one of these, the diagnostic scanner will show codes that could lead to an engine shutdown.
A failing G28 sensor could cause an inaccurate speed counter for your gearbox and a gearbox which shifts more quickly than normal, or a misfire in the gear. It is probable that the sensor is failing and requires to be replaced if you experience any of these symptoms. The good news is that they are very affordable and readily available, especially when you're looking at a Bosch sensor, which is what we have. You can also choose the GM version of this part is also a good choice.
5. Tachometer
A faulty engine speed sensor could be a cause for a slew of issues with your car. It is a crucial part of the audi a3 replacement key smart audi key replacement cost replacement - please click the next internet page,'s transmission because it communicates to the ECU about how fast or slow the vehicle's crankshaft is turning. When this sensor fails, it could disrupt the performance of the transmission and the rest of the car's components.
The G5 engine sensor is located at the edge of transmission, above the flywheel ring. It sends signals via gray wire to ECU pin T55/49. The ECU uses this signal to control the flow of fuel and boost and also timig. It also relays it to the G5 Tachometer inside the instrument cluster. You can determine if the sensor is in failure by examining the continuity of the sensor to the tachometer. Additionally, you can examine the continuity between pins T55/49 of the ECU and pin T6a/1 of the instrument cluster (trace [79trace [79]), and between pin T6a/1 and pin T26a/12. You should observe around 1000 ohms of resistance between these two points. This is the same across the audi key fob replacement cost 80-100-200-RS2 model, ranging from the 1985 MC 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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