At the fuel pump relay you should have 1 full time hot wire. 1 hot wire when you turn on the switch. 1 ground, and the other wire goes to the pump. Test the ground to be sure it is good. If so then jump a hot to the one that goes to the pump and see if it runs.If it does then you have a bad relay or ECM. You can swap the relay with another of the same # from tour fuse box to test it.There is also a ground on top of the frame near the filler neck, check it too. Good Luck
The disteibutor cap should have 2 screws houlding it in place. I think they are 7/32 head screws, nothing to it. The oil sender takes a special socket, Good Luck
They make 2 different sending units. One for a 60 psi gauge, and one for an 80 psi gauge. Sounds like you got the one for the 60 psi gauge. Check with your parts store with the number on your recipt.
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SOURCE: 2000 S10 4.3L
Did you verify that the relay terminals have the appropriate signals to them?
ECM fuse B (20-amp) should provide power at all times to the orange wire of the fuel pump relay. The relay coil receives ground via the black wire, and relay coil gets power from the dark green/white wire. When the relay is closed, you should have battery power on the gray wire.
The relay trigger wire should have power from the dark green/white wire in terminal 1 of the Vehicle Control Module (VCM) connector for the first couple of seconds after they key is turned to run (to prime the system) and when the truck is running. Checking for all the appropriate signals at the relay is where I would start. That is after I checked for diagnostic codes.
Believe the fuel relay is the middle relay out of the three in the left rear of the glove box. Last thing is to hot wire the fuel pump if you can not get it scanned, see if the pump is bad unless your going to have a shop work on changing the fuel pump.
Good luck and hope this helps. keep me posted.
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Thanks We got the Pump working but now My Oil Pressure Switch is Messed up. It Is hiding slightly behind and below the Distributer cap. Its in Our way and have no Ideas how to properly get to the OPS. If Someone Knows how to remove the Distibuter cap than we can fix it. We no its bad cause its cracked in half. Very frustrating.
Put on the new oil pressure switch but now my oil gauge is really high. 40 is middle and 80 is full. Its sitting always around 78 to 75. Very rarely it will go to 45 to 55 but if it does it will only last a min or 2 and go right back up. Any ideas of why. did a diagnosis to it and no codes cam up.
I'll check that out. thank.
Is there power to the pump? If there is and it's well grounded, then the new pump must be no good.
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