i am trying to set the lamba on my 89 300e i have and open crcuit somewhere i have to diffrent fluke meters on the car fluke 88 is set to a fixed 70 and fluke 83 is fixed 30 i sent both meters to fluke to get calibrated they are both fine fixed 30 sends me to a coolant temperture problem and fixed 70 sends me either to the td pickup or crank postioning sensor how should i tackle this both meters are set the same on percent should since both meters are reading 2 diffrent settings what next thanks for the help