|
Because it’s at the rear of the cam, which has a slot for it to fit into, it seems that the reluctor position is literally built-in to the engine design. The programming map for such a sensor would simply be a series of high/low voltages read by the CPS which correspond to the 360 degree cycle of the cam. No messing with it, no counting teeth and unless the key on the reluctor is totally destroyed, no getting it in wrong.
Yes, the plastic valve cover is totally different and it's clear BMW simply changed the design for the Valvetronic engines without regard to accessibility for maintenance. Getting them off is extremely complex, with the Eccentric Shaft Sensor being the biggest PITA - it’s located at the rear of the Valvetronic shaft and is quite tall (and stupid expensive) so even after everything is loose you have to maneuver the valve cover up & over it without snapping off the rather fragile locking tabs. On Bank 1 I had to remove the plastic “wall” on top of the strut tower for clearance, and very slightly bend the AC line out of the way; would’ve done that on Bank 2 also but the entire wiper assembly would’ve had to come out. Probably easier to cut a slot in that side plastic wall to give the CPS clearance to lift off the valve cover!
|