I see the sensor but what tells the ECU where the cam shaft is?
2007-08-31 07:30:27 · 4 answers · asked by gill73115 3 in Cars & Transportation ➔ Car Makes ➔ Ford
There's a saw-blade looking plate on the backside of the crank pulley that the sensor measures resistance between it's magnet and the plate, depending on the resistance it can tell where each cylinder is in rotation.
2007-08-31 09:58:43 · answer #1 · answered by Paul 5 · 0⤊ 1⤋
There is a reluctor wheel tooth (I can't remember if it's teeth right this second) on the back of the cam... when it passes by the sensor the sensor voltage changes and this signals the PCM that the cam has passed the sensor .. it's written and known that when it gets past that point, the cam has passed a certain point (like number 1 intake)
If more than one tooth, two of the teeth are stagered more than the others telling the PCM it's passed a certain point.
2007-09-01 12:23:31 · answer #2 · answered by gearbox 7 · 0⤊ 1⤋
The cam has a little magnet on it and sensor picks up a signal or break in the magnetic field when the magnet passes by it and sends a signal to the ECU. Shop manual may explain it better.
2007-08-31 07:49:55 · answer #3 · answered by paul h 7 · 0⤊ 1⤋
The sensor does, it references off the camshaft
2007-08-31 07:44:19 · answer #4 · answered by cardog 3 · 0⤊ 0⤋