2004 330ci ZHP no volts at fuel pump.
Couple days ago it started missfiring/loosing power accelerating onto onramp. Made it home (barely) sputtering whole way. Checked glovebox and ebox fuses under hood/good. There appears to be 5v. at one of the wires at fuel pump at all times, however with ign. in run position there is not 12v. at the pump. How do i get to the fuel pump relay behind the glove box?, i wanted to try swapping the relays to see if the pump would run. Could the MAF sensor have anything to do with the voltage missing because my code reader brought up the MAF once allong with four cylinder missfire codes as well as an intake air sensor code.........Thanks for any help, Robert.