Comments by "William Squires" (@williamsquires3070) on "Rainman Ray's Repairs"
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Hi Ray. You keep saying the sensor has three 5 volt lines. If it has 4 pins (and the case is not ground), then one of the pins has to be ground, one has to be 5 volts, and another has to be the sensor output line. The remaining pin could be connected to any of the other three, or left open (the vehicle wiring diagram should show you what it is.) So, at most, only two of the pins should be tied to the 5 volt reference from the ECU… unless the sensor is shorted inside (which doesn’t seem to be the case as you’re not getting a code for short/voltage-low.) Since the error codes are for an intermittent problem, I’d start tappy-tapping on the sensor or the wiring harness! 😊 Or look for a bad ground. The other possibility is one of the magnets in the end cap on the camshaft (opposite the sprocket) is either broken, weak, or has broken free of the epoxy used to secure it to the inside of that end cap. Use a small screwdriver and run it around the outside of the end cap; you should feel the magnetic pull - equally spaced - at 4 (or possibly 6 or 8) locations around the perimeter. They should be of equal strength, too. If you have an actual bar magnet handy, hold one end close to the end cap; it should alternate between attraction and repulsion as you go around the perimeter. HTH! 😀
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