I have been left my sister's F-150 pick up. It is a newer model, 2004 or better(dont 'you dare laugh, I have seen it a total of 2 sec.) that died and won't start. It turns over, but no go. The fuel pump was replaced and I don't know how many sensors, including the crankshaft sensor. The collision(assuming this is the fuel pump reset switch?) switch has been replaced. Four mechanics and 3 diagnostic computers all agree should run like a top. HELP!! What else can be checked?

 

Woops, found the year, it is 2002.

 

Just cause the fuel pump was replace don't mean anything. Is the truck getting fire? I would check to see if the truck is geting fuel first. You could do that yourself by finding the schrader valve. The schrader valve will be on the fuel rail.Then place a gauge to see what kind of pressure you got. If that all check out I would see if you go spark. It could be a number of things. A coolent temp sensor could cause the truck not to start,