Dennis (69.125.234.80) - Tue Dec 9 17:36:31 2008

I'm not getting power to the fuel pump relay when the key comes on. There are 5 prongs... one has constant power and the other 4 do not, even when the key is on. Two 20amp fuses inside the fuse box do not have power (ECM-1 & ENG-1). I also noticed that the gauges do not come on with the key, but the radio does. The battery is fully charged and it does crank over fine. Any suggestions or help you can offer would be greatly appreciated?? Thank you.

Reply #1 greg (71.192.183.71) - Mon Feb 23 11:31:30 2009

where is the fuel pump located on the 1995 chevy c 1500 pickup

Reply #2 carlos (72.196.15.223) - Thu May 28 23:45:50 2009

i have the same problem doooo u know whats wrong

Reply #3 Tim (64.15.108.110) - Thu Jul 30 14:33:16 2009

I am having the same problem with my 1995 Chevy PU. K2500, 5.7. Do not replace your fuel pump yet. That is not the problem. I have replaced fuel pump, fuel relay, ecm at the distributor, pick-up coil and ignition coil to no avail. On mine it is looking like there is a wiring problem at the ECM/ECU ( computer ). or the computer it's self. Learn from me don't just change out parts. Do you have a service engine soon light come on when you turn on the key? If not, that is the trucks basic diognostic to that you have power comming from the battery to the ecm at the distributor. If you have already fixed your problem I would love to know what it was. Mabe it is mine also.

TH

Reply #4 Ronnie jones (68.207.161.234) - Sat Sep 5 22:00:39 2009

I'm not getting power to the fuel pump relay when the key comes on. There are 5 prongs... one has constant power and the other 4 do not, even when the key is on. Two 20amp fuses inside the fuse box do not have power (ECM-1 & ENG-1). I also noticed that the gauges do not come on with the key, but the radio does. The battery is fully charged and it does crank over fine. Any suggestions or help you can offer would be greatly appreciated?? Thank you

Reply #5 mike (96.237.152.185) - Fri Sep 11 21:40:44 2009

1994 chevy 1500 turn key on no power to the fuel pump. fuel guage is'mt working. intermitted problem person who had truck before me replace pump twice sometime would start on own sometimes not. sound like eletric issue between reley and pump and guage. when you turn key I can't hear the pump turn on.

Reply #6 mobilecharles9 (205.188.116.198) - Sun Sep 13 17:21:52 2009

i have 19995 cheverolet truck and engine 1 fuse keeps on blowing out at thew turn of the key switch

Reply #7 mobilecharles9 (205.188.116.198) - Sun Sep 13 17:26:03 2009

i have 19995 cheverolet truck and engine 1 fuse keeps on blowing out at thew turn of the key switch

Reply #8 william (205.188.116.198) - Sun Sep 20 13:42:14 2009

I am working on a '95 G20 van with the same TBI system/ECM configuration. This van only has 6500 mi. It was totaled at three months old, not kidding. So the owner swapped the body with an older one. All was fine he stated until trying to start it. No fuel pressure. So he poured a little fuel down the TBI and it started as long as fuel was introduced, he made it backfire somehow and the tbi wiring was burned. He then spliced in another set of tbi connectors and wires. He then pulled the tank with intentions of replacing the pump and that is when the job was handed to me for takeover. I installed the pump and tank, tried to start it and of course it would not. No sound from pump. I then bypassed the FP relay to verify good wiring to FP and it was. I then checked voltage to oil pressure switch and it was found to be bad. I replaced the OPS thinking the the problem was cured. The fuel pump activated after the OPS change but still no action from the TBI injectors. Not injecting so I found they have voltage but they are ground controlled by the ECM, so I swapped it with another exact model ECM, but the same result. It acts like there is a power source not making it to the ECM because I found no voltage at all to the TPS, or the IAC. Now I am really confused. I cannot figure this out.

Reply #9 Dave (98.251.28.25) - Wed Oct 7 14:25:12 2009

Where is the fuel pump relay? I have a similar problem, I can hear the fuel pump but it will not turn over.

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