AEM 30-0300 Analog Reading Issue Extreme Fluctuations

[Dan Drinan Jr]

I've had this setup working just fine for over a month , Afr Gauge and Afr Reading on Hptuners matched. But now Im seeing some really erratic readings on the hptuners log compared to the gauge. At Idle Gauge sits around 14.68 and only goes up or down 0.2+- . However on Hptuners it's now starting to fluctuate between 13 and 17 constantly and rapidly. I rechecked all of my wiring and everything is sound So im not sure what to do now. 04 GTO Using Optional Cigarette lighter Power and Gnd to power AEM 30-0300 Wired through dash into Pro-link into analog input for MPVI3.

[gtstorey]

Have you checked the voltage output for the gauge with a voltmeter to see if it's that erratic?