10/08/2026
Old Chevy van had a crank no start condition, no fuel or spark, ecm power fuse and gauge fuse blows when the ignition is turned on, I ended up testing all the wiring related to the ecm power fuse and it checked out ok, there where some sensors related to those circuits that can short causing the fuse to blow, disconnecting those sensors made no difference.
After testing the ecm power circuits and isolating the sensors related to it i came to the conclusion that the wiring and sensors where all ok which left the ecm as the failed component causing the short.
The ecm was replaced and the van had fuel but no spark, I then replaced the distributor ignition module and the van fired right up