Hello first time posting here. I have a 2005 Ram 1500 with the 5.7. I just rebuilt the motor top and bottom and have everything reassembled. The problem I'm having is that it will crank but will not turn on. If it manages to start it will idle maybe 30 seconds very roughly then die. I have made sure it has spark, and fuel. Also I have replaced the tb, cam position sensor, and double checked the timing. I have searched everywhere and have only found what I've already done. I have seen where a coolant temperature sensor has caused this on a ford taurus. Could this be the case for my truck?

 

Do you have good fuel pressure at the rail. All sensors plugged in?

 

Check engine light on?

 

As far as I can tell all sensors, and connections are good. Just found it was throwing a p0499 and p0113 code. Cleared the p0113 with new iat sensor and cleared it. The p0499 code is an evap so it shouldn't affect it starting right? Also found that the starter was completely shot and replaced it as well along with battery connections. Just about the only thing I haven't replaced is the egr valve. But would that cause it to not start?

 

Evap wouldn't cause start issues. Neither will egr. IAT would. Does is run now, or still same issue?

 

Same issue. It seems like it wants to catch bad, as I hear the exhaust for a second before it just keeps trying to crank. Went ahead and checked the egr anyway while trying to diagnose it. It has a lot of carbon buildup, so I'm going to clean it and replace a gasket since it was rusted and cracked.

 

I would check fuel pressures