Very frustrated. Problem started with starting truck up, would run for a few seconds and stall out. Replaced fuel filter, with no change. Replaced fuel pump next. With the ignition key on, there is 12 - 14 volts going to the fuel pump harness. Disconnected harness, connected volt meter, as soon as starter turns engine over, the voltage goes to zero. I took my battery jump box, and connected to the pump harness direct to verify operation. Pump operates. After doing this, I reconnected the harness and turned engine over, it will run long enough to burn the gas injected by me operating the pump, then stalls out. I've checked the EFI main relay to verify it"s operation, checks ok. I have no idea why I'm losing the voltage once the starter engages. I would greatly appreciate any help on this. I've spent a ton of time trying to troubleshoot this. Thanks to anyone who may have seen something similar, and can help me. If you would prefer to call, my # is 508-735-0932.
have the same problem?
Thursday, July 23rd, 2009 AT 6:37 AM