CO pot
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Details
The CO (Carbon monoxide) potentiometer is an ECU adjustment to set the correct levels of CO at idle for those engines running open loop (i.e. no O2 sensor). NOTE: The Turbo and NA CO pots are different!
Turbo CO pot (A100E6151F)
A 20 turn 10kohm potentiometer with a series 270R resistor connected between pins 1 and 3. Turning the CO pot anti(counter) clockwise reduces the resistance the CO pot voltage read by the ECU / ElanScan.
NA CO pot (A100E6224F)
Unknown except all three pins are connected and used by the ECU - if anyone has a spare, Geoff would be interested to see it!