Why You Should Not Think About Enhancing Your Audi G28

How to Replace an <a href="Audi”>http://autoban.lv/user/skatejudo0/”>Audi Q5 key G28 Engine Speed Sensor

Charles the Humble Technician shows you how to replace the G28 Engine Speed Sensor. The sensor is situated 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 in the instrument cluster.

1. Engine Speed Sensor

<img src="https://g28carkeys.co.uk/wp-content/uploads/2023/10/Porsche-New-2023.png" style="max-width:420px;float:left;padding:10px 10px 10px 0px;border:0px;">It is located on the outside of the transmission, above the flywheel ring gear G28 Engine Speed Sensor sends signals to ECU pin T55/49 via an uncolored wire. The ECU then uses this information to control the flow of fuel, timig 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 must be aware when the crankshaft is TDC and where the camshaft is so it can activate spark and injectors in the right way.

If this sensor fails when it fails, the ECU will display a P00160 error message. This indicates that the Crank Shaft is out of line with the Intake Camshaft. It could also be a sign of the possibility of a chain stretch or jump in the chain link of the upper chain of timing. The code will not appear without the additional information provided by other sensors (G4 or G40).

It’s a bit tricky to test since there are different pins on the connector, and they all have different functions. The most effective method to test it is by measuring the resistance between the ECU and the sensor. It should read approximately 1000 ohms if the sensor is in full operation. Examine for evidence of coolant or oil in the connector bay if you are experiencing issues with this part.

1. Injectors

Yesterday, when accelerating from highway paytoll at full speed, i noticed a huge drop in power. It was as if the engine was running out of gas. Or my injectors weren’t firing. In the morning, i removed the spark plugs, 3 were drenched in gazoline, the 4th one was dry. I placed a tissue over each hole in the injector and when i turn the engine on without sparks, the ones with gazoline jump right out. The 4th one remains closed. I checked the ground connection on ECU pins 14/55/30/55/48/55/14/55/48/ i get 0ohm. I assume that the problem is elsewhere.

I also tried to reset the PID with no success. The car will start when the G28 is not plugged in and is running fine when it is plugged in, but still has intermittent misfire issues at higher RPM. The coolant sensor (G62), even when it is unplugged, shows a temperature of -49c. Also i noticed that the oil pressure gauge in the cockpit is showing 2 bar when the actual pressure is 0.0 when i rev the engine.

I’m not sure what to do. I feel like i’ve pretty much all other possibilities out. But i am afraid I may have missed something. If anyone has any suggestions, please chime in! TIA!

<img src="https://g28carkeys.co.uk/wp-content/uploads/2023/11/happy-smiling-woman-with-car-key-driving-2022-11-17-00-15-14-utc-min-scaled.jpg" style="max-width:430px;float:left;padding:10px 10px 10px 0px;border:0px;">3. Fuel Pump

The fuel pump in the g28 is activated by a signal sent from the RPM sensor. The GM-style transmitter functions similarly 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 parts store. Testing them is easy to do – just put your DMM in resistance mode and measure the resistance between pins 1 (with the bump on the connector end up) and 2 (2nd from left on the black connector’s end). They should be infinite Ohms.

1. ECU

Our 20vt turbo (3B AAN, ABY, and ADU) engines have an ECU that needs to be aware of the speed and position of the crankshaft to make decisions regarding fuel injector timing etc. To do this, it makes use of a Crank Position Sensor (G4) and an Engine Speed Sensor (G28). If either of these goes badly, you will see codes on the diagnostic scanner that can cause the engine to shut down.

A damaged G28 sensor could result in an inaccurate speed counter for the gearbox or a gearbox that shifts more quickly than normal, and/or a misfire in gear. It is probable that your sensor is failing and needs to be replaced if you notice any of these signs. They’re cheap and easy to find especially in the case of an Bosch sensor like ours. You can also choose the GM version of this component is also a good option.

1. Tachometer

A faulty engine speed sensor could be the reason behind a slew of problems in your car. It is an important part of the transmission of your <a href="replacement”>http://demo.emshost.com/space-uid-1877197.html”>replacement key audi since it sends information to the ECU regarding how fast or slowly the engine is spinning. This sensor could cause the transmission to fail and other components of the car to be affected.

The G5 engine speed sensor is located on the outside of the transmission above the flywheel ring gear and sends a signal directly to the ECU at pin T55/49 through a grey wire. The ECU then processes the signal to control the flow of fuel, audi a4 replacement key (<a href="https://images.google.cf/url?q=https://zenwriting.net/yarncattle08/the-reasons-audi-a4-spare-key-is-everywhere-this-year”>https://images.google.cf/url?q=https://zenwriting.net/yarncattle08/the-reasons-audi-a4-spare-key-is-everywhere-this-year”>https://images.google.cf/url?q=https://zenwriting.net/yarncattle08/the-reasons-audi-a4-spare-key-is-everywhere-this-year) timig and boost and then sends it on to the G5 Tachometer located 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 [79trace [79]) and between pin T6a/1 and the instrument cluster pin T26a/12. There should be a resistance of approximately 1000 ohms in these areas. This is a standard part across the <a href="audi”>https://sovren.media/u/barsugar55/”>audi keys replacement cost 80 100 200, UrS and RS2 range from 1985 MC to the 1997 UrS AAN and 1995 RS2 ADU so good ones might be availble in wrecking yards.