Gm Flex Fuel Sensor Wiring

Photo 25 31 25 gm truck flex fuel coversion bleen covered all the soldered connections with hea shrink tubing and ran wire.

Gm flex fuel sensor wiring. Still unsure how to wire up that pesky gm flex fuel sensor to your terminator x system. This original equipment flex fuel sensor has been manufactured to fit your gm vehicle providing the same performance durability and service life you expect from general motors. The 3 wire brown plug is the side you want to keep. The kpro has a built in 2 4 k ohm pull up resistor on the ethanol input so no additional resistor needs to be wired between out and vcc.

If you purchase the kit specific installation instructions are included that will lead you through a step by step installation. You can fab up your own stuff parts for everything can be had for about half of our kit. The signal circuit carries the ethanol percentage via a frequency signal. Wire strippers soldering iron crimpers lighter optional.

The sensor should be placed in the return line from the fuel rail to the fuel tank. Vcc power 9 18v gnd ground. Come on in let s get you squared away. The flatter black plug with 4 wire positions can be removed as well as the tape around the wires.

In this video i wire up the flex fuel sensor that we swapped in last week. The three wires provide a ground circuit a power source and a signal output to the ecm. The power source is battery positive voltage and the ground circuit connects to an engine ground. A wire is inserted into that pin which runs up to the flex fuel sensor.

The flex fuel sensor signal is used by the engine control module to adjust the air fuel mixture and ignition timing for efficient operation. Out output to ecu. Ms3 flex fuel install the first thing you will want to do is enable flex fuel under fuel flex sensor settings tab it will look like this note this is the settings for the chevy style sensor with temp and content hz being 50 150 look below to see the difference. I show you how to run the wire remove the harness from the pcm and what pin needs to be added to the stock computer.