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This was a running combo last October. I'm on the last stages of swapping out my forged 6.0L LS engine with a 24x reluctor to my new LSX 388 with a 58x wheel and 4x timing chain. I have read searches until my eyes are crossed & fixed everything I can find. Swapped the 12V pins to 5V, swapped the A & C wires on the cam harness, put two brand new sensors in, switched the tune to 58x in the Holley program, checked all the grounds, checked 5V reference to both sensors and modified crank sensor to fix excessive air gap to reluctor wheel. I now have cam & crank signals in the System Log, but still show 0 RPM(STALL) while cranking over. What am I missing? I thought fixing the crank sensor would automatically fix the RPM, but it did not.
Just so everyone knows, so far I also checked all 3 power wires and 4 grounds to the Holley are hooked up. When I first hooked it up I had no cam, crank or rpm signals. Doing all of the above solved 2 out of the 3 issues. Car still will not fire.
I have it set to GM lsx 58 tooth on the ignition type drop down menu. I did not try the custom settings yet. Injection type, multiport and injectors set at sequential.
I found the problem. The brand new crank sensor I bought was boxed wrong. Either someone swapped it out and returned it or it was boxed wrong at the factory. It was a 24x crank sensor, (black). The real 58x sensor is a very light gray. I put a new one in and it popped right off. Running too rich still but I have FIRE!
07-31-2018, 06:58 PM
Holley Dominator. No rpm signal and no fire 
