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No Start: Ignition ECU or Hall Sensor???? 200

posted by  Bunch_of_Bricks on  Sat Nov 29 11:58 CST 2003
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86 244GL, 135k, was running fine until a few days ago when it stalled on the highway, was able to restart and keep going. Then the next day it stalled while idling, again was able to restart. Today it stalled while I was pulling up my street and I have not been able to restart. With the key on, there is power at the coil, but no spark when cranking. Tried known good coil, still no spark. The tach needle does not move when cranking. Checked connector at ignition ECU underhood and it is fine and all grounds are good. Wiring from ECU to distributor is also good, I verified continuity between the hall sensor plug and the ECU as well as the coil to the ECU. Looking at the FAQ, I tried the hall sensor test and with the key on, I was able to verify 5 volts on one terminal, and able to verify the ground. I was unable to get 11 volts on the third terminal. If I read the FAQ correctly, I have a bad ECU. Can anyone verify this? Is there something else I should be testing? The FAQ mentions a power stage, which I can find on my 760, but not on the 240?

Also, the ignition ECU is #1346107, does this cross with any other numbers??

Thanks in advance
John






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