[Cannons]

I installed a zzp flex fuel sensor, is there any way to check if it's working properly. The tune is set for flex fuel. No cel at all and I tested the pink wire and it shows 9-10v?

[closs2sx]

you would need software or a hand held device that reads alcohol content and look at what the sensor is reading and add a know calculated amount and determine what the % should be based on known added amount and what the percent in the actual fuel added is vs how much is in the tank and if the calc works out to 25% and the sensor is reading roughly 25% its working. For instance if you have roughly 5 gallons in tank and sensor is reading 0% alcohol and you add 5 gallons of e85 that is 50% alcohol and your sensor is then reading 25% after a short drive you sensor is working.