ive recently installed an autometer AFR gauge and am currently using the standard ford zetec lambda sensor, the gauge is constantly reading rich.

ive looked thru the instructions for the gauge and seen the range of voltage the gauge wants to see is 0-1v im seeing around 3.3v at idle across the sensor dropping to around 2.8v when revved.

am i usng the wrong lambda gauge or have i wired it wrong?

if im using the wrong sensor can someone point me in the direction of the correct one

ta