Question about 1995 GMC Yukon

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I replaced the fuel pump the module the relay check all fuses check wire to the pump and still no power to the pump

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You have a fuel shut off that works through oil pressure switch make sue oil is full and wires to oil switch are good

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2004 ford explorer when you turn the switch on the fuel pump fuse blows . i un pluged fuel pump it still blows . i went and un pluged fuel control module and it doest blow


Unplugging the fuel control relay or module will ensure no current is entering the wire heading towards the fuel pump. The likelihood is there is a short circuit somewhere along that part of the circuit though it is possible the relay could be faulty.

Ideally, with the aid of a circuit diagram, the wire should be traced from the source at the fuel pump module along its length until the fault is discovered. There is intelligent equipment available that can locate short circuits.

Mar 03, 2015 | Ford Cars & Trucks

1 Answer

Installed new fuel pump, ignition control module, disconnected fuel line before filter no fuel being pumped and only a thump sound fro fuel tank. I don't hear the normal humm as it pressurizes. Checked...


the fuel pump fuse is in the fuse panel,using a test light with key on check all the fuses.you say you have checked the wiring so i am assuming you have checked powers and grounds at the pump on the pump wires and not the fuel gauge wires.its possible that you have a bad pump,and yes you can get a bad new pump.was the fuel pump the original problem or did you just start replacing parts without testing.

Nov 01, 2013 | 1991 Chevrolet S-10

1 Answer

No power to fuel pump or pump fuse on a 1996 saturn sl1. whats up?


The fuel pump fuse gets its power from the fuel pump relay, which is located in the Instrument Panel Junction Block.

The fuel pump relay gets its ground from G102, which is located just forward of the left strut tower.

The fuel pump relay gets its power from the Powertrain Control Module Connector "C" Pin 10 ( DARK GREEN/ WHITE wire) for the primary side of the relay.

The sencondary side (the side that provides power to the fuel pump fuse) of the fuel pump relay gets its power from the IP BATT Fuse (30 Amp) HOT AT ALL TIMES in the underhood fuse block.

This should be enough information to figure out why your fuel pump is not getting power. Let me know what you find.

Apr 14, 2012 | Saturn SL1 Cars & Trucks

1 Answer

2000 ford mustang 3.8 no power at fuel pump fuse is good relay is good it does have a anti theft device, inertia is good


You have a fuel pu,p driver module that gets the power from the inertia switch and the power for the fuel pump comes from that module. I would start by checking for a wiring problem. Below is a picture of where that module is located. At the plug of the module you want to make sure you have good continuity from the pink and black wire at the module to the inertia switch. Then you will want to make sure you have continuity from the fuel pump to the module in the brown and pink wire. That should be the power source to the fuel pump. One other thing to keep in mind and that is the PCM controls ground to the fuel pump so this may be an issue. Try that first to see if you have a wiring problem. If you have power from the inertia to the module but no power coming out of it to the fuel pump this may be your problem. Hope I was able to help...

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Feb 29, 2012 | 2000 Ford Mustang

1 Answer

99 chevy s10 replaced fuel pump but the new one is not getting power i ran a hot wire to the pump and it comes on in the tank so i know the pump works.i replaced the relay under the hood that said fuel...


It sounds like you are on the right track. Here are the basics for your pump. I took a guess at the engine size and went with a 4.3 V6, Hopefully that is it.

1. There is an ECM B fuse, 20amp that feeds one side of the relay.
2. You have already mentioned the relay. The other side of the relay feeds from the VCM or Vehicle control module.

Remove your relay and check pin #3.. You should have 12volts with key on. If not check the ECM B fuse.
If you cross pin#3 and #5 on at the relay location you should feed 12 volts to your pump and it should run. If it does not, look for a ground problem on the black pump wire or a broken wire between the relay and the pump. I show a gray power wire to the pump.

Hope this helps.. Best of Luck..

Aug 21, 2011 | Chevrolet S 10 Cars & Trucks

1 Answer

2001 Lincoln LS V6. Had the fuel pumps replaced about 3 months ago. Now the power to fuel pump "comes and goes" (I have the back seat out and pump covers off so I can hear). The fuse in the trunk...


The vehicle has one fuel pump and it is controlled by the rear electronic module .
Free wiring diagrams here http://www.bbbind.com/free_tsb.html
Enter the vehicle info. Year , make , model an engine . Under system click on Engine , then under subsystem click on fuel controls . Then click the search button , then click the first blue link . The fourth diagram down . You will see fuel pump relay , rear control module , fuel pump module ! I would check the rear electronic module .

May 15, 2017 | 2001 Lincoln LS

2 Answers

Its not getting fuel to the motor. i was drivin down the freeway and it sputtered like it was ou of gas when i know it wasnt


Hello

Power for the fuel pump is supplied by fuse #16 in the Power Distribution Center (PDC), goes through the Fuel Pump Relay and then to the Fuel Pump and the ground completes the circuit. Power for the Fuel Pump Relay coil is supplied by fuse #18 in the PDC and the Powertrain Control Module (PCM) supplies ground. It is a fairly simple circuit to check.
The first thing to do is check all the fuses, especially #16 and #18. If you have they are good then you will need to pull the fuel pump relay and check for power, with the key ON at the dark green/black wire and orange wire. The DG/BK wire is the power for the fuel pump and the OR wire is the power for the relay coil. If you have power there connect a jumper between the DG/BK wire and the dark green/white wire. You should hear the fuel pump running. If not there is a problem in the DG/WT wire from the relay to the pump.
Okay, lets assume that checks out fine, the next thing to do is replace the fuel pump relay and ground the dark blue wire. You should hear the fuel pump running. Okay? Good, now go to the PCM located on the firewall in the engine room. It has three large connectors, black, white and grey. There is a DB wire in cavity 19of the grey connector. Ground this wire and you should hear the fuel pump running. If it does then the wiring for the fuel pump circuit is all good and the PCM will need to be replaced. If it doesn't run, then you have a problem in the DB wire between the relay and the PCM.

Jul 14, 2010 | 1997 Jeep Grand Cherokee

1 Answer

2000 S10 4.3L Fuel pump stopped working out of the blue. We Put a new Fuel Pump in, new harnes to fuel pump, new fuel filter, new relay, new fuses in IGN C and ECM B fuses. Still the pump will not turn on....


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.

May 06, 2009 | 1999 GMC Safari

1 Answer

2001 chevy silverado 2500 hd, 6.0, replaced fuel pump and it will not start. Put a light tester to the wire harness and it is not getting power. cheked the relay and it works. is there anything else that...


If you are sure the fuel pump relay is working, check continuity from the pump to the relay socket. These wires love to corrode. When you turn your ignition on, the fuel pump will only run for a couple seconds before it shuts off via the automatic shutdown relay. Make sure you are checking power within this window. The PCM (powertrain control module) is what completes the ground in order for the relay to send power to the pump. If the PCM does not recieve a signal from several sensors (mainly the Crank Sensor) it will not turn on the pump. You may want to check these sensors, is the check engine light on? You can scan it to see if any sensors have thrown a code. Be sure all applicable fuses are ok, the PCM may have its own fuse, check that even if the fuel pump fuse is ok. Your Truck may also have an inertia switch for the fuel pump which shuts it off during an accident. Check that as well.

Mar 20, 2009 | 2001 Chevrolet Silverado 2500HD

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