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Don't have any power going to the fuel pump - 2000 Nissan Sentra

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Ok if you have no power at the pump then more than likely you have a bad fuel pump relay you can find this in the fuse box that is under the hood it will say fuel pump on the relay. but also look in your fuse box thats inside the car to see if there is a fuse for the pump and if there is check to see if it is bad or not.

Posted on Apr 30, 2010

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No power going to the fuel pump


I would be sure it is your crankshaft position sensor not working. In this instance there is no problem checking that too. Check if you have a spark at the plugs. If you don.t have then your fuel pump wont come on.

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Hi Don,
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No power going to my fuel pump relay


If it was an AUDU/VW I would be sure it is your crankshaft position sensor not working. In this instance there is no problem checking that too. Check if you have a spark at the plugs. If ypou don.t have then your fuel pump wont come on.

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How do you check to see if fuel pump is bad on a 1988 ramcharger 5.2lter t.b.I. without having to physically taking it out of tank?


Hot wire it! Set a battery by rear of car and run jumper wires to the fuel pump connector.. Instant gratification !
You could almost do the same thing at the fuel pump relay with one short jumper wire: pull the relay out and jump the battery power feed there across to the fuel pump wire. Turn key on and pump should run. Be careful, make sure you do have a single hot line at the relay with key on, and don't put the jumper wire in the wrong slot, or there won't be anything left to play with. You'd have to know which terminal was the fuel pump wire leaving there and going to the pump.
Well, there are a couple of shadetree solutions, worked for me. I assumed from your post that you probably don't have a voltmeter, which if true, is only bad if you want to do any work on your truck yourself. 'Cuz taking the tank off is a thankless, dirty job, and a voltmeter could have saved the trouble by testing for power at the fuel pump connector when the engine was being cranked over. If the wire has power, only then would you know the pump has to be taken out. Good luck.

Jul 15, 2012 | Cars & Trucks

2 Answers

My 1999 Kia Sportage won't start. I checked the fuel pump while the key is on the ignition and I get the impression that it is not getting any juice. Fuel pump fuse is OK. Both cam and crank se


Well for starters, you need to diagnose the problem before replacing anymore parts. I say this because you mention both the fuel pump and sensors dealing with the ignition system which are 2 separate main things. Basically it takes 2 things to make an engine start, fuel and spark at the spark plugs. You need to narrow down what is missing because it seems since you replaced sensors dealing with spark and then you mention the other need fuel. I'm not sure as to where to start to help until whatever is missing is diagnosed and then find the cause of the loss. There are a couple of things you can check. Below is a picture of the relay box in the engine compartment. With the help of somebody put a finger touching both the fuel pump relay and the EGI main relay. While touching them have somebody turn the key to the "on" position (no need to try and start). When the key is turned on you should feel a "click" inside both of those relays. The fuel pump relay will click for about 3 seconds and the click again to shut off. The EGI main relay should stay on. If both seem to be fine you need to make sure of the fuel pump gettting "juice" and for power to the ignition system like the coils. You can get to the power/juice wire at the fuel pump pretty easy. You can access the connection at the fuel pump by lifting the lower part of the rear seat. Once the seat is lifted you should be able to see a part in the carpet that is cut to be able to lift the carpet up and access the plate covering the access to the fuel pump and/or the top of the fuel tank. Using a test light, check the green and yellow wires at the fuel pump. You should have power at those wire when turn the engine over or if the key is just turned to the on position you should have power there for about 3 seconds. To begin checking for spark or power to the ignition system you need to make sure you are getting power to the ignition coils. The red and white wires at the coils are your power wires. Check those. Also you can check the power at the fuel injectors. When the key is turned on or when trying to start, you should have power to the green wire at each of the fuel injectors. You should have constant power/juice at each of the fuel injectors. This is where I would start to narrow down the loss. Start here with these tests and let me know how the tests come out by replying/commenting here or you can email me directly at csautomotivecars@att.net ith what you have found out. Once the first tests are done and I know what the results are, we can go to the next step with a couple of other tests to figue the problem out. If one of the relays don't "click" then you have a possible bad relay. The EGI main relay is a common thing to go as well as the fuel pump relay. Don't mind helping and there is no cost to you for it but I don't want to tell you to start replacing parts until the problem is located. Hope this helps get you started.


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2 Answers

Which fuse is for fuel pump in1999 seirra


check 20 amp fuse to ecm and fuel pump.

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1 Answer

Does the fuel pump on a 97 chrysler lhs make sound when the key is on?


check the fuses for the fuel pump then if its good check the wiring for the system.there is also a pump relay in the system to check,if there is no power to the tank unit then changing the pump is not going to fix the problem.

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1 Answer

1992 saturn sl wont start..no power to fuel pump


Well said by Dennis. If you really don't get power then check your fuse and relay. Also some makes get the power to pump go signal from the distributor.

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1 Answer

1996 caravan replaced fuel pump dont have power going to it ,, already checked and moved around the relays.. is there anything else i need to do?


you don`t say did you check the fuses.were the connections at the fuel pump plug in good/clean condition.have you check for power at the pump wires at the tank you do then you will have to check the pump wires at the pump if you don`t have power by the tank then you need to check to see if power is powering up the relay and going out of the relay to the pump.you could have a corrosion problem under the relay box.

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1 Answer

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