Ok..got everything back together and now I get no fuel. The changes made were lt4 heads/intake, new timing chain, remove heater core. The car will turn over but my fuel pump will not prime...hence..I'm not getting fuel. When I hooked up my laptop to look at the pcm I cannot communicate with it. Any ideas on what this could be.

I'm having the pcm tested today outside the car at thunder racing and I have another pcm I can try tonight to at least see if it activates the fuel pump. Any help would be grately appreciated. I've got the thunder shootout in 12 day and I need to get on the dyno to tune then to the track to dial the new setup in.

Tim

 

Sounds like your PCM might be a gonner. When you turn your key on, do your fans stay on all the time? All your PCM connections are good? Grounds also? No blown fuses? Just some input...

Ken R 95Z

 

had thunder racing test the pcm on a desktop system. He could connect and read it. Looks like i have a problem somewhere in my wiring system.

If the vats is removed from the car but still in the pcm will you not be able to connect to it?