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420A Possible ECU?

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poonman

poonman

15+ Year Contributor
504
3
May 19, 2006
Tampa Bay, Florida
The Auto shut down RELAY is getting all the positives but the ECU is NOT sending the negative signal to turn ON the Fuel Pump relay AND the Auto Shut Down relay. If (I) bypass the Negative signal and give it my own NOT from the ECU and it still doesnt Start, What could it be. Is it possible that it could be a Crank or Cam Sensor, Also my ECU has a whistle in it but the caps dont look like they are leaking. But as I mentioned before. It does this from time to time and all I do is mess with the ASD relay and change it and it fires up, This time i changed it had no effect.

Also I checked the Coils and the resistance is perfect so cant be coils.

And all fuses are fine.
 
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