So i have a 2007 GL450. It shut down on me while doing 80mph on the freeway. Got it towed home and looked at all the possible problems. So i changed the CPS the Camshaft sensors due to a code of p0016 p0017. I cleared them codes out the system. Now its cranking over but no fire. Ive checked the fuel rail for pressure from the fuel pump. At first it had some drips of fuel coming out but now there seems to be no pressure. My question is does the fuel pump pressure up if the car dont fire up. I know it needs some fuel but would u get positive pressure at the valve. Also is there a fuse and a relay or just a relay for the fuel pump....
thanks

 

Did you buy an OEM CPS or cheap Chinese junk?

the latter will not work.

 

oem. Theres no codes

 

Just to be sure, we are talking about that you replaced the Crankshaft Position Sensor?