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HOW TO READ AEM AIR FUEL RATIO GAUGE HOW TO
HOW TO READ AEM AIR FUEL RATIO GAUGE ZIP

Use a small binder clip to hold the wires back while you prep them. Obviously we want the bulk of the length on the O2 sensor portion here and I pulled back the sheath far enough that I made my cut and the sheath would cover up all of the wiring from the AEM connector as well.

HOW TO READ AEM AIR FUEL RATIO GAUGE ZIP

If you look at the first picture you can tell the replacement O2 sensor has a lot of excess wiring so I cut the zip tie in the middle and got rid of the second half of the length to bring it close to the same amount length as the AEM unit. Proceed to strip the ends and prepare them to be soldered as well as put your heat shrink tubing on now so you don't forget to later.

1 great smelling candle for that fine feminine touch!īegin by taking the AEM O2 sensor and pulling the protective sheath away from the connector roughly 4-6 inches and cut the wires.

The parts: You will need your old O2 sensors and your new one. Here's the How-to on making it work with your AEM gauge! You can purchase a 17014 Bosche O2 sensor from your local autoparts store for a whopping ~$50. This is your standard O2 sensor for the AEM ( ) AEM Power 30-2001 - AEM Power Replacement Wideband O2 Sensors - Overview - sitting at $80 + shipping. This shows the sensor is functioning correctly. As the sensor heats up if it's in functioning order it will slowly begin to start reading more and more lean until you end up with '-' as your final reading.

The quick way to test your sensor is to turn the key to the on position, the gauge will quickly go through it's various output readings then go to ~14.7.

If it isn't picking up anything at all make sure the connection is good and if so then your gauge is done for.

Disconnect the 6 wire plug from the back of your gauge, and measure the voltage on the white wire and check to insure it is near ~2.40 volts.

In a perfect world, all gasoline engines would run the ideal air-fuel mixture of 14.7 parts air to 1 part fuel.

HOW TO READ AEM AIR FUEL RATIO GAUGE HOW TO

You should know how to check this yourself fairly easily so I won't elaborate. For example, while the stoichiometric air-fuel ratio for traditional gasoline is 14.7:1, the ideal mixture for E10 gasoline (gas that contains 10 ethanol) is around 14.04:1.The wires are disconnected/broken between the sensor and the gauge.Problem: My gauge is stuck at ~14.7 and doesn't move whether WOT or cruise, what's the deal?!Īnswer: The gauge being stuck at ~14.7 signifies typically that the signal is not being transmitted properly. Once you determine which one is faulty obviously you can replace it accordingly, however I have also included a cheaper alternative to replacing the sensor instead of paying for the semi pricey AEM sensor! Purpose: This little tutorial will not only show you how to quickly test both your AEM Wideband gauge but also the sensor.