The astro van is a 2001 Coming behind someone's work. It did crank. It did run at idle only for a bit. I lost communication with them ecm. No lights on the cluster ( service engine soon etc.) No fuel pump relay power.
Apparently the ecm is not getting proper ground. Using a wire with clips at both ends I grounded the ecm case to the chassis and got back communication to the scan tool, fuel pump runs and the service engine light is back. I did not install the starter so I removed it. There were three wires attached. I removed the medium sized wire and now have proper ground without using the wire with clips to the ecm housing.

It starts and wants to run but I am aware the exhaust return to the intake is missing. This pipe
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