Fuel pump relay?

Tiny
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The red wire comes from the relay. With key on it should have power

If it doe not check the fuse in the diagram for power on both sides.

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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No, you do not have power to the relay. That is the red wire.

Did you check the fuse in the diagram I sent you in the beginning? Please check that. The yellow wire needs battery voltage.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Yes sir, seems I have power at EEC and dioxide and 30 on pump constant still no power to red wire cycle key or trying to crank. Thanks for helping this wiring can get a litte frustrating, lol. Thanks for your patience once again.
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Do you have power to the tan/black wire?

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Yes sir.
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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I have even tried jumper from 30 black and yellow to 87 double green and nothing and know 30 is hot.
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Tan and black eec has power when ingnition is on
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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It sounds like you either have a bad relay or you have a wiring issue such as the ground for the power relay.

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Can I just rewire from relay to fuel pump clip? If so how?
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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No the red wire controls more than the fuel pump.

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Okay, so best way is to invest in ohms meter and check? I'm feeling like it is a ground issue and it's as simple as a bad wire. Because truck was intermittent start as I said I bought cheap pump still had problem with fuel delivery, but had it running shut it off put tank back up and of course it was a little bit of a pain. After it was all put back together it had same problem.I really think it's under power distribution box. But such a cluster don't know where to start. Once again thanks so much I know this has been a pain. But I'm not giving up lol it's something simple in the wiring just such a cluster lol.
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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You need to get the red wire hot again for it to work. That is going to mean testing at the power relay.

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Okay Mr. Roy, I'm going to go at it again.I only have a test light for now yesterday I did get power to red wire once as I'm thinking this is of course the problem I've had since day one I can see a cut in the black and white wire at power relay nothing bad just a small nic in wire looks fine doesn't seem broken or anything we know it's a wire problem. So I'm going back out to run test keep in mind I only have a test light also I tried the jumper thing from 30 to 87 no power to pump which according to my research should had pump fire up but no. So throw some more test at me and I'll run them and keep you informed of the outcome. Once again thanks for your patience.I know with your help we will solve this. Once again keep in mind I only have a test light. Ready for tests. Lol
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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I have power to yellow constant. Tan and black has power with ignition on.
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Okay, if the tan/black has power with the key on, then the relay should energize and connect power to the red wire to the fuel pump relay.

The only reason it would not is if the relay is bad or the ground is bad or the black/white wire.

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Okay Mr Roy, I'm back I have power to black and yellow and I'm getting power to the red wire when ignition is on, but it does not go out it stays hot until I turn key off. Thanks and happy holidays.
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Okay, that is supposed to do that with the red wire.

Was there any other power at the relay? I know you said the black/yellow but any other wires?

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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Okay. The SMEC is what controls the ASD relay. It has total control of the peration.

Looks like you need a SMEC and a relay.

I attached rock auto. You need the number off the old one to match it up.
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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No other wires are hot. A fuel pump relay black and yellow hot constant and red hot when ignition is on. What is a SMEC and ASD relay? I only have 3 relays fuel pump relay EEC power relay and ac /wot relay.
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Tuesday, November 24th, 2020 AT 8:14 AM
Tiny
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The smec is the ECM.

What relay are you testing? The color of the wires indicates the ASD or power relay. It is listed in the diagram I sent you.

Roy
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Tuesday, November 24th, 2020 AT 8:14 AM

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