[urq] ECU sensors

[CARDCONSYS at aol.com]

        Ed, I do not think you are correct regarding the 'tdc' sensor 
operation. The Hall effect sensor in the distributor provides a 'window' signal 
signal centred about the firing position(variable) for cylinder # 1 and is there to 
synchronise the ECU. It is actually gated, in hardware in the ECU, with the 
ignition timing sensor (and output to the ignition control module) which is the 
one at the side of the bell housing with the black connector. The speed 
sensor is the one at the top of the bell housing with the grey connector. As has 
been posted many times before the engine will not run unless the Hall effect 
sensor 'window' is correctly set using the arrow on the rotating metal piece in 
the distributor, the mark on the distributor housing, the two punch marks on 
the camshaft pulley, and the top edge of the cam cover next to the pulley.
       Martin Dapot
       83 UrQ