So I have a 1965 C20 that has a 2003 LM7 5.3 with an S480. The engine is controlled by a Microsquirt ecu. Over New Years I got a little rowdy with it and was doing donuts while bouncing off the limiter. I then proceeded to get on the anti-lag for a bit. The truck instantly died. I hauled it home and started checking things since then. The truck will now just start and die right away. I've synced my laptop to the ecu and everything looks fine as far as that goes. I've replaced fuel filters and spark plugs. My next thing is to swap out a crank position sensor and see if that helps. I tried to get a data log but it won't run long enough to get anything. I have also heard that the anti lag is hard on reluctor wheels. How do I know if I have a reluctor wheel issue? It is unresponsive to any throttle input as well. Any ideas on where to look or start? Thanks for any input!

 

Start with the basics. Check fuel pressure, spark, injectors firing, leak down test, etc.

 

I checked fuel pressure and it was good but have not checked the injectors, spark, and leak down. Is it important with a noid light to check each injector since the Microsquirt fires bank to bank?

 

I would check each one, but I’ve seen a few engines run on one bank only due to injector fuse blown. Don’t leave yourself a chance to wonder. Check them all.

 

Thanks, I will do that!