After it dies and you try to restart when you turn the key to run not start but run does the fuel pump run for a few seconds and then shut off?
On one of my LS swaps I had a similar problem. It ran great at first and then it would quit like turning off a light switch. I looked at everything. Thought it had to be a crank or cam sensor. I really hated the thought of pulling the header and starter to replace the crank sensor. I was poking around the wiring and then found the wire that goes from the constant 12 volt fuse to the ecm was loose in the connector and would heat up and loose connection. Fixed it and it's ran like top ever since.
If either your cam or crank sensor are faulty the engine will not run.I've never had one fail but not saying it couldn't.
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Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
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