I have a 2007 3.5 dodge charger it was delaying and sometime drag to start but it still start until a week ago all it does now only crank but wont start. i check fuse and fuel pump and they are ok .

SOURCE: 1999 Dodge Ram 1500 Extended Cab 4x4

idle air control motor on back of throttle body maybe malfunctioning and not allowing it to idle

SOURCE: 1999 Dodge Ram 1500 Extended Cab 4x4

YOU'RE GONNA HATE THIS BUT IT DOES SOUND LIKE A FUEL ISSUE. HOWEVER HERE'S THE CATCH.....THE FURL FILTER IS IN THE GAS TANK CONNECTED TO THE FUEL PUMP. YOU HAVE TO DROP THE TANK OR TAKE THE BED OFF TO GET TO IT. AND YOU CAN ONLY GET THE NEW FILTER AT THE DEALER. THE LOCAL PARTS STORE DOESN'T CARRY THESE. BUT I'M NOT SURE ABOUT NAPA, THEY MIGHT. YOU MIGHT ALSO WANT TO CHECK FOR A VAC. LEAK AROUND THE THROTTLE BODY. LASTLY WHEN WAS THE LAST TIME YOU DID ANYTHING TO THE TRANS.? MIGHT WANT TO LOOK INTO THAT.

SOURCE: I have a 97 Dodge Ram 1500 5.2 that wont start

COULD BE A BAD FUEL PUMP EVEN THOUGH ITS NEW, TRY THE FUSES IN THE MAIN FUSE BOX UNDER THE HOOD, ALSO TRY DISCONNECTING THE BATTERY CABLES FOR ABOUT 5 MINS, LASTLY IT MAY BE THE ECM [computer on fire wall]
HOPE THIS HELPS SOMEWHAT

SOURCE: dodge cummins won't start, fuel reaching injector pump but no fuel coming out of injector pump.

You said you have fuel flowing from the inlet line of the injection pump? But not at the injector lines?

SOURCE: 2007 Dodge Caliber will not start

Yes,They usually fail that quick