Question about 1990 Honda Accord

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No power to fuel pump

Replaced relay and tested pump but still no power to pump have had anwser that there is a fuse protector but i can't find one marked for it can any one help with which fuse it would be cheers to any one who could shed some light on this

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  • daryl wilson Apr 17, 2009

    thanks for the help i am heading to car now will look at every thing yous have said .i have not done any electrical wor on the car other than taking out the tank which only had one hanness to the float but will check volt and work back let u know how i go thanks again

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Have you done any electrical work on the vehicle prior to this problem or did all of a sudden not work? There is should be a disrupt switch somewhere that turns the power off to the pump in the event of an vehicle accident. I don't know where it is on that particular car. Mine was in the trunk. So, think back if you unplugged something and maybe you didn't know what it went to.

Posted on Apr 17, 2009

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Posted on Jan 02, 2017

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2000 olds siluette fuel pump not functioning,replaced fuel pump,tested relays,still dont hear it pumping. suggestions????


Do you have a multi-meter or test light?
There is a fuel pump fuse, in the fuse/relay distribution box, did you check that? That fuse and the fuel pump relay would have a "hot at all times" designation. Use the test light to see if the fuse has power at it. Next move to the FPR, pull it out and check for power. One of the relay terminals (it is #30 designation on the relay) would also be hot at all times (this terminal is coming directly from the fuse). Use the test light to check for that.
Look at the relay: on the side is a descriptor, or a diagram showing the relay terminals usage: #30 is the power feed, #87 is the feed on to the gas tank to the fuel pump. The other two terminals are the "coil side" of relay, #85 and #86, the coil side is what turns the relay on (from a signal from the pcm) and lets power pass to the pump.
If you have power at the relay terminal, you can take a short jumper wire and jump terminal 30 with 87. this will check the wiring circuit- it will send power on to the pump, and it should start working. If pump does not work, check for power on the gray wire at the gas tank connector. If no power, (and you still have the relay jumpered) then you have a bad wire from relay to the gas tank. If there is power on the gray pump wire, but still no pump when it is connected, then possibly the ground on your car for the pump is bad, or you maybe got a defective pump. Not likely, but it has happened before.
Now if you can jumper the relay and turn the pump on, we are down to the problem: apparently the coil side of your relay is not working-not turning the relay on, because of a missing signal from the pcm, or because the ground for the coil side is bad, or maybe just a bad relay.

May 07, 2017 | Cars & Trucks

3 Answers

I have a 2003 Buick Century replaced fuel pump, fuel pump relay fuel pump fuse is no power to the fuel pump what's wrong with the car? Pcm? Key switch where's the relay located


Pull the relay. Using a test light connected to ground probe the four pins in the fuse block. Two of them should have power. Connect the test light to power. Back probe the other two connectors. One should be grounded all the time, this is the power supply wire to the fuel pump. The other should be grounded when the key is turned to the run position and only for about 5 seconds.

Let me know what you find and I'll help you further.

Sep 13, 2014 | Cars & Trucks

1 Answer

I have a 03 Hyundai accent I just replaced the fuel pump I have no power to the fuel pump I've checked the fuses and the fuel pump relay it won't start I'm not sure what to do next


Do you have a test light? If not, go buy a cheap $5 test light-one with a lead to clip to a ground, and with a needle type probe.
Pull the fuel pump relay out of the terminals it is plugged into-you need to check if the power feed for the pump is still available at the relay. Clip the test light lead to a ground and touch the test probe to the positive battery post-to check that your ground is good- tester should light up. Now touch the probe to all of the terminals that the relay plugs into. One terminal should have power with key off. If no terminals have power, you have lost the power feed for the pump. Double check all your maxi fuses in the power distribution box. Either a maxi fuse or a fusible link will be the power feed for the fuel pump relay.
If the power feed is there at the relay, try a new relay. If still no pump, a shop will probably have to check your fuel pump circuit.
Did you check for power at the fuel tank while the key was held in crank? When the engine is cranking, the fuel pump wire should have power. When the key is turned to on, the fuel pump should have power for about 2 seconds, to pressurize the fuel system. Then when key is turned to crank or start, the fuel pump should stay on.

Sep 07, 2013 | Cars & Trucks

2 Answers

Electrical prblem


There would be a fuel pump fuse, either under dash or under hood. Check that fuse, use the test light to see if fuse has power. If not, then it might be a fusible link or maxi-fuse that feeds the fuse panel. If fuse has power with key on, pull the relay, and use the test light and probe relay terminals, key off. One terminal should be hot at all times. If not, check for power loss between battery and relay terminal-possibly a maxi-fuse or fuse link.
If relay does have power to terminal, quickly check other terminals while someone turns key to on-for about 2 seconds, another terminal should show power-this would be signal from computer to turn the relay on to prime the lines and fuel rail. If you have that, plug relay in and cycle key. Does relay click? If yes, relay is working and problem may be at fuel pump connector. If relay is not working, but you have power to it, and the short signal from computer is there, then check the relay's coil side ground. Computer signals the coil side and the signal goes to ground from relay coil side.
Pull the relay and use a jumper wire from relay's hot terminal to fuel pump terminal-the wire to pump from the relay. If pump comes on, the problem is right there at the relay-either no signal from computer or the relay coil's ground is lost. If pump does not come on, again check connector at pump-that or the wire to pump[ has a problem.

May 12, 2013 | 2001 GMC Savana

1 Answer

No power to fuel pump relay. check the relay and fuse and every thing is ok. Change the fuel pump and still dont turn on.


need fuel relay to have power check all fuses and relays there are multiple...then look to power schematic an look for the bad wire keep checking for power test test test.

Mar 20, 2011 | 2002 Suzuki Aerio

1 Answer

Lost power to the fuel pump going down interstate


1. The fuse for the fuel pump may have blown or the fuel pump Relay may be faulty. If you have not done this already, check the fuse and replace it if it is blown. When replacing the fuse you must use one of the correct amperage. If it requires, for example, a 15 amp fuse, that is what you must use.

If the fuse is OK then replace the Relay for the fuel pump and re-check.

The location of the fuses and relays for the vehicle are shown in your owner's manual.

2. Check the wiring to the fuel pump.

3. On further testing, the fuel pump itself may be faulty and require replacement.

Nov 25, 2010 | 2003 Chevrolet Suburban

2 Answers

1994 buick park avenue . driving home and shut off


how did you jump the fuel pump relay, by bypassing the relay or by applying power to contact that closes the relay? If you bypassed the relay completely you need to b ench test the relay you can do this easily by using any 12v dc power source. If you tested the fuel pump relay by applying power to the relay and the pump run and developed pressure. I suspect a wiring or ground issue. Good luck

Oct 07, 2009 | 1997 Buick Park Avenue

1 Answer

Cranks but no start


There is no fuel reset button on this van.

To test the circuit before removing the tank, you will need a voltmeter or cheap test light. Disconnect the connector at the fuel tank. On the harness side, locate the gray wire (fuel pump wire). Connect the test light to a good ground. Have a helper crank the engine over. While engine is cranking, the gray wire should have power. If it does, and the pump is not turning on, then the pump must be bad and need replacing. If there is no power on the gray wire with engine cranking, the circuit is the problem, not the pump. Go back and find the fuel pump fuse in the junction block (the fuse relay block where the fuel pump relay is). Check the fuse, also check if there is power going to the fuse. This fuse should be hot at all times. The circuit goes from battery to pump fuse to fuel pump relay to gas tank and the fuel pump.

Aug 02, 2017 | 1995 Chevrolet Astro

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