Re: 1998 cobalt 7.4 volvo fuel injected
well since i need help really bad and don closed my last thread, i'll have to retype everything here again, so here goes.
as you can se up above i thought i had one problem and when i took everyones advice and started with the fuel water filter and it was full of trash, water and was orange in color. but then i noticed my fuel pumps were not coming on and engine would not start at all. so i purchased a seloc online manual. and followed the directions on fuel system diagnostics. at some point i replace the fuel pump relays that did not help, then it told me to get a jump wire from 85 to 87 terminals on the fuel relay base. when i did this, the fuel pumps immediately turned on. then it told me to see if i got a positive (non 0.00 reading) on my ohm meter by checking from 85 on the fuel pump relay to j1-23 on the ecm. which i did. it read positive with a 9. something reading which is supposed to prove the ecm is ok. when i looked at the schematics though, it shows that j1-23 is "blank". so now i'm concerned that the seloc manual is misprinted or incorrect. so 2 things please. #1 is j1-23 the correct ecm point to check. and #2 it says if i got a positive numeric reading that the ecm is good and i must have a corroded or broken wire or connection somewhere in the system. i was planning on getting some electrical connection cleaner and start with the base of the fuel relay, cause i noticed when i removed the 2 old relays the prongs were somewhat green and corroded. so any other ideas where to check or to do?
