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Aurora40 · 03-27-2011

Since they are a Hall-effect sensor, the distance the sensor is from the reluctor can matter. I don't think the cam sensor used any kind of a spacer, but maybe make sure it seats properly?

The crank reluctor wheel has unevenly spaced gaps, to help the ECM determine if it missed one. Though that said, the ECM is pretty simplistic on these older cars. I do believe there is a difference in crank sensors, the earlier cars had some kind of shim or something, and the later ones didn't? Has the crank sensor been replaced at any point to your knowledge?

03-27-2011	#6
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,704	Re: CODE 31 Cam Sensor circuit fault.. Help Since they are a Hall-effect sensor, the distance the sensor is from the reluctor can matter. I don't think the cam sensor used any kind of a spacer, but maybe make sure it seats properly? The crank reluctor wheel has unevenly spaced gaps, to help the ECM determine if it missed one. Though that said, the ECM is pretty simplistic on these older cars. I do believe there is a difference in crank sensors, the earlier cars had some kind of shim or something, and the later ones didn't? Has the crank sensor been replaced at any point to your knowledge?