M20b27 cranks, no start

[gazellebeigem3]

This is in my e28 but i figure e30 m20 guys should have some good insight for me since im completly lost on this one. Heres the situation:

The problem is in the ignition, i know this much. No spark at plug wires, checked the coil, i have power on both terminals but no pulse when i crank it. Im not sure where to look next.. maybe the cps?

[MA325is88]

Main relay.

[jlevie]

Main relay & fuse, Crank Position Sensor, or DME in that order.

[gazellebeigem3]

ran though the motronic trouble shooting, turned out to be a bad connection at the engine speed sensor.