The problem started with some hot start issues and has gotter worse. It ran great, it just wouldnt start unless it was cold. I have a known good fuel pump with some electrical issues related to the pump. I know the pump is good because when I splice 12V power to the grey wire in the fuel pump wiring harness downstream of the connector under the vehicle (right behind the drivers seat), it will start and run fine. I have actually driven it that way with no problems. Once it is running, it stays running, even if I disconnect the "hot" 12v feed. I replaced the relay, and I hear it click when the key is turned. When I probe the green wire with the white stripe in the underhood fuse box, I get 12 volts for about 2 seconds when I turn the key on, or continously when the van is running (I don't know if that wire is the one to the relay of from it). What really confuses me is that I also get 12v on the pin in the connector under the car where the gray wire to the fuel pump connects, but it still wont start unless I run a "hot" wire. I know GM did something with their oil pressure switch, but wouldn't I not get power to the connector if that was the problem? Any help is appreciated. Thanks, Justin
have the same problem?
Sunday, September 30th, 2012 AT 4:08 AM