Question about 1999 Ford F150 Regular Cab

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The fuel pump relay clicks on but no voltage to fuel pumps

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6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 491 Answers

SOURCE: location of fuel pump relay in 1990 ford mustang

inside the engine compartment with the main fuses

Posted on Dec 21, 2008

  • 331 Answers

SOURCE: i can get power th the fuel pump when i run a hard wire from the battery to the relay but when i put the relay back in no power to the fuel pump

I have a question. Turn the ignition on you should hear the pump for about 3 seconds. then it should stop. this is normal operation. then when a signal is sent to the ignition that you are going to crank it then it switches on. I can see how this can seem like the pump is not working but after you crank it you should be able to hear the pump for about 1-1.5 seconds after the crank then it will stop. The pump will not turn on until it is told to do so by the computer.

Posted on May 25, 2009

  • 195 Answers

SOURCE: low voltage at fuel pump on 2005 new fuel pump no

There is a fuel pump relay used on your truck. Check the wiring diagragm for the location. Then also trace the wiring back to make sure you do not have nicks, cuts, or abrasions on the wire leaking voltage.
RPM Northwest

Posted on Jun 08, 2009

  • 218 Answers

SOURCE: Where is the fuel pump relay on a 1987 ford

Your fuel pump relay should be located in the power distribution box under the hood. If not , it may possibly located on the firewall. Hope this helps

Posted on Jul 18, 2009

  • 1486 Answers

SOURCE: fuel pump not working relay timesout but no pump no fuel at rail

Repace the fuel pump.

Posted on Jul 19, 2009

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I have a 2002 Honda 954RR. The fuel pump is not kicking on when I turn the key. How do I check the fuel pump relay to see if its working

the fuel pump relay has 4 leads. one is positive to battery, one is negative, ground, one is input voltage(on/off), and one is load (to the fuel pump +). Locate a 12 volt dc power source and connect the negative to the relay ground, and the positive to the relay input voltage lead. When 12 volts is applied to the input voltage, you should hear a click of the relay opening- additionally, if you have a multi-tester, you can also check for continuity (resistance, ohmage) by connecting the multi-tester to the 2 other leads. when the input voltage lead receives the 12 volts, you should hear a click AND the multitester should detect continuity in the circuit, and lose continuity when the 12 volt is removed from the input voltage lead.

Jan 11, 2017 | Honda Cars & Trucks

2 Answers

Have new fuel relays plus The fuel pump works but not getting power to fuel pump

With a test light make sure there is battery voltage at the fuel relay if not check for a faulty fuse , if voltage is ok turn ignition on , relay should click and there should battery voltage at the cable going to the fuel pump, if not the relay is faulty. now go to the fuel pump and test for battery voltage there while a helper turns the ignition on and off , the computer will turn the pump off after a short while if the motor does not start, if there is no voltage at the pump with this test there is a fault in the cable to the pump.

Mar 04, 2016 | Cars & Trucks

2 Answers

Why am I not getting fuel pump voltage to the green wire that goes to my fuel pump relay. I am getting ignition voltage to the double orange wires.

Is this the 88 safari, still? My info shows you have an oil pressure switch in parallel with fuel pump relay. If that switch and circuit is functional, once you crank it enough to bring up oil pressure and that switch closes, the fuel pump will get voltage, regardless of relay. The relay has two sides, the load side, that is the line with arrowhead, and the control side, the dark green wire with white tracer is voltage to control side, comes from the computer. The black wire with white tracer is a ground, chassis ground.
So, with engine cranking, you have spark at the plugs and fuel injector pulse? I'm just trying to decide if you have more than one issue?
fuel pump relay safari-ykworvyohwc5ztkov4tmvtay-5-0.jpg

Jul 21, 2017 | Cars & Trucks

3 Answers

I have a 1988 ford f150 and have non power to the fuel pump

Sounds like the relay has gone bad (common problem on these trucks) there is no rebuild so you have to replace it (around $10) located under hood, passenger side, by air cleaner you'll see a bank of little "boxes" the fuel pump is the green one. Just go to your local parts store to get the replacement. You just unplug the old one, and plug in the new one. Do make sure the key is OFF when you do it.

Jan 04, 2015 | 1988 Ford F 150

1 Answer

Fuel pump relay secondary circuit - high voltage

Here is the definition for the code.
Test procedures are a little different depending on the make and model.

P0232 Description The Engine Control Module (ECM) provides ignition positive voltage to the coil side of the fuel pump relay. When the ignition switch is first turned ON, the ECM energizes the fuel pump relay, which applies power to the fuel pump. The ECM enables the fuel pump relay as long as the engine is cranking or running, and crankshaft reference pulses are received. If no crankshaft reference pulses are received, the ECM de-energizes the fuel pump relay after 2 seconds. The ECM monitors the voltage on the fuel pump relay control circuit.

Read more:

Feb 10, 2013 | Cars & Trucks

1 Answer

2000 buick regal. Losing fuel pump voltage free wiring diagrams ! Enter vehicle info. year , make , model an engine size . Under system click on engine ,then under subsystem click on fuel controls . Then click the search button , then click blue link .The 7th diagram down shows two fuel pump relays , This I have not seen before ! One is speed cont. relay an the other is just fuel pump relay ? The speed control one has a resistor in the electrical circuit . That is way your droping voltage .
Fuel Pump Electrical Circuit Diagnosis (VIN K)
Fuel Pump Electrical Circuit Diagnosis (VIN 1)

The PCM alters fuel pump speed by energizing the fuel pump speed control relay. Under normal conditions, the fuel pump speed control relay is energized. The applied voltage to the fuel pump is controlled by a resistor assembly. When higher fuel volume is required due to increased engine load, MAP sensor value over 90 kPa the PCM de-energizes the fuel pump speed control relay circuit. The increased voltage to the in-tank fuel pump allows a higher volume of fuel to be delivered to the fuel rail. The PCM also compensates for low system voltage by energizing the fuel pump speed control relay.

Have it check for codes !
Did DTC P0230 or DTC 1260 set?
Go to DTC P0230 Fuel Pump Relay Control Circuit or DTC P1260 Fuel Pump Speed Relay Control Circuit
Go to Step 3

May 05, 2017 | Buick Regal Cars & Trucks

1 Answer

Car is 00 skoda octavia 1.9 tdi when i turn on ignition the heater plug indicator light does not come on on full turn engine turns over as normal but will not start no error shown on diagnostics on further...


I apologize for a delayed response as i was not at my desk.

Check to see if the fuel pump relay clicks when you turn the key on. If it doesnt click verify one terminal has constant ground if not you will need to run a new ground wire. If ground is good access pin 46 on connector 1 of the pcm to check for voltage if no voltage replace pcm if it has voltage replace green/white wire between pcm and relay. You can also first try to swap the relay with another one to see if that helps. If relay clicks then check the 15 amp fuel pump fuse and if blown replace. If fuse is good verify one terminal on the relay has voltage at all times and gray wire has voltage leaving relay when key is in crank position for for a few seconds when turned into on position. If gray wire leaving relay has voltage but not gray wire at fuel pump replace the wire.

Let me know,once you check the above.

Thanks and Regards

Nov 13, 2011 | Cars & Trucks

1 Answer

How do you check voltage on the fuel pump on a 2001 Chevy Silverado, was driving engine stalled but regained power drove three more miles and it quit running, I have spark but no fuel. Trying to check out...

Hello Dennis.
When you are checking fuel pump voltage on your pickup when you turn on the key the voltage is only applied to the pump for a couple of seconds unless you go to cranking position.
There are 4 wires leading to the fuel pump on your truck. The gray wire is the 12 volt positive power feed to the fuel pump and the black provides the ground. The orange and purple wires are your fuel gauge wires.
The relay for the fuel pump is in your under hood fuse panel and I believe is marked on the underside of the fuse panel cover. It should click on and off again quickly when you turn the key to "on". Having a helper to cycle the key would be handy while you put your finger on the relay and listen to it. Just because it clicks still doesn't mean it's functional but relay failure on these models is somewhat rare.
I would start by checking for power at the fuel pump harness.
Fuel pump issues are quite common on these model year trucks.
Hope this helps you out.

Nov 28, 2009 | 2001 Chevrolet Silverado 1500

2 Answers

2004 Sunfire Problem starting and shutting down on occasion

I'd want to check voltage and ground for fuel pump relay. The load side of relay is the line with arrowhead, when relay is energized that line with arrowhead moves to other terminal and sends voltage to fuel pump on gray wire. The control side of relay is that coil symbol, it has to have voltage and ground, the voltage comes from pcm, the ground is a chassis ground. The voltage for load side of relay is fuse protected, fp/inj fuse. fuel pump-mo2osvehtzbwzhstuaetpz2s-2-0.jpg

May 12, 2017 | 2004 Pontiac Sunfire

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