Back to the 1997 E320 camshaft position sensor problem!

This weekend I plan to check the functioning of the sensor and wiring, and check the magnet in the camshaft gear.

1.) I figure I can remove the sensor and check the voltages (+12, ground, and switching either 0 or +12) I plan to use an external magnet.

2.) I plan to rotate the engine using a remote starter switch till I can see the magnet in the camshaft gear (does anybody know what it looks like?) and check that it hasn't fallen out - I'll use a nail to check the pull.

3.) I will reinstall the camshaft position sensor and see that the magnet in the camshaft gear switches it - & rotate the engine to check it go on and off. I'll also see if there is an AC voltage on the switch when the car is running.

4.) The problem may be electromagnetic interference as the CPS wires run near the spark plug wires. I've read that EMI noise can confuse the computer and sometimes can be large if improper plugs or wires are used, or the the routing of the CPS cable is too close to sources of EMI.

5.) I might even use a braid to shield the cable.

Anything I missed? and does anybody know what the camshaft magnet will look like through the camshaft position sensor hole?

thanks,

Paul

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1983 500 SL (Gone )
1972 350 SL 4.5