Fuel Pump Relay TESTING and REPLACEMENT

How to test and replace a fuel pump relay. The principles shown here apply to most vehicles. However, it's best to check with your vehicle's repair manual for testing parameters.This specific vehicle is a '97 Nissan Maxima.
The fuel pump relay is an electronic component found on all vehicles with an internal combustion engine. It directs current to the electric fuel pump and ensures that the part receives enough power to operate properly, but not too much as to damage it. Whenever you turn on the ignition of your vehicle, the fuel pump relay is turned on. The fuel pump relay is usually controlled by the Powertrain Control Module (PCM) or the ignition.
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Note:
Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program. Carsntoys is a member of the Amazon Influencer Program.
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[@HiGHnP753]

Great Video and explanation, easy and thorough style to follow and learn. Thanks!

[@ericrodrigue893]

Worked to check my snowmobile relays! Thank you!

[@BLUE-jc2gp]

Best tutorial of relay testing...period.

[@adamclark9253]

Thank you, that was simple and explained well, I'll go check mine now

[@CarsNToys]

Glad to help.

[@ernestomartinez7910]

Great explanation and detailed and obviously it’s not for my car but you did mention that all you would have to do is punch in your vehicle information and the fuel pump relay so it really doesn’t matter what car you just have to punch in your information

[@mohammedabrarahmed3299]

Excellent! Very helpful to understand with the demonstration. Thanks. Will use a 12V power adaptor and try to test

[@CarsNToys]

Glad it helped

[@mohammedabrarahmed3299]

@@CarsNToys I tested them successfully on my Datsun Redigo here in India and it helped me diagnose the problem. The power was going go the fuel pump motor but it was not working. Took it off connected it to my 12v adaptor and tried to manually rotate its fan and it started working. Here video of it. kzbin.info/www/bejne/e4K1nmOAra99gcU Thanks once again.

[@chiefjaspil]

Best Ever Explanation of relay test, cudo's to you My Friend

[@strawz007]

Very helpful, thank you from RSA👌👍

[@MrGarcon98]

nice job i came here to find out where mine is on my 2012 nissan ,,,thank you well done job just like in school back in time . thanks

[@Engineerboy100]

Excellent video, very clear. Thanks for posting.

[@CarsNToys]

Glad it was helpful!

[@tunakpreston8240]

I really appreciate this man!

[@CarsNToys]

Glad to help!

[@Swahiliangift70x7]

Thank you much for showing us how to us ho to read information on the relay, how to use a multeter to test this relay and any other relay, as well as how to detect a bad relay. I really enjoyed your video. If you would do a series on how to test other electrical car parts using a multimeter I think it would be very helpful for all of us novices in KZbin Land. I love your teaching style. Will you do a video blike this on how to test a Mass Air Flow Sensor ?

[@colinm1325]

Just found your channel, great explanations, Thank you! 👍👏

[@invitationtoadventure8837]

Cheers mate, helps me out with the car and a nice skill to know :)

[@AC-ud7cv]

Its brah not mate

[@ther1guy]

best described video. thank you.

[@zanathzanath7236]

You're very good teacher👍 cheers 🍻

[@alsdjfknbo]

Just gotta say. Great vid Man!!!

[@CarsNToys]

+Gopher Cheese Thank you

[@nickolecolvin7641]

Awesome info!! i did not know that google photo search thing could do that!! Helps me ALOT!! Thanx

[@josehidalgo192]

Awesome just the kind of video I was looking for , thanks bro god bless .

[@mohammedabrarahmed3299]

Same here

[@pizzamonster975]

This is one great video you made thank you very much this helps me out a lot.

[@marvinlowe3213]

What dam car or truck is working on video suck

[@pizzamonster975]

@@marvinlowe3213 2000 Nissan Maxima.

[@prohandymanhonesto6867]

I will try it on my Gmc savana 1500 2006, thanks for share.

[@hasanyildiz9364]

Tx man a super useful video!

[@wbonilla35]

thank you so much your video was very helpful god bless

[@rotfan77]

Great video. Thanks

[@nicolasdakota103]

Useful video. Thanks

[@alonsoaguilar5812]

Thank you much,it was too helpfull!!!

[@CarsNToys]

Glad to help!

[@macedaalejandro748]

Fue exelente gracias por hacer este video

[@1totheright]

Thank You! Very straight forward and clear instruction.

[@CarsNToys]

Glad to help.

[@theC0NNMAN]

how much resistance should you see passing through to consider good once the meter is hooked up? my relay clicks, but once I meter it also I get anywhere from 0.0ohms to .5ohms

[@hungrycamperfilms]

Veey good information, thank you 👍

[@frankzamfino23]

excellent,excellent

[@officialdjhoody]

Great explanation. Thankyou.

[@CarsNToys]

Glad it was helpful!

[@jayr4047]

Thanks for the info. 👍

[@CarsNToys]

Glad to help.

[@okidokidiego5783]

Nice, thank senor,big help

[@bwielectrician992]

Thanks for sharing idol...☺ full support

[@jrquidi2572]

Thanks alot👍

[@Alopez426]

Nice vid. Had this fail on a 1998 Integra, what a pain in the @$$ it was to determine as it was just stalling driving down the highway, but just put the clutch in, crank it and it would start back up no problem. Eventually, after many a stall and a few Google searches, I came a cross a forum that suggested the fuel pump relay. Replaced it and no more stalling.

[@CarsNToys]

+Amaury Lopez That's awesome man. Yea, it's one of those things people often over look.

[@PedroRivera-mw5bq]

Amaury Lopez. tego problema co honda integra me. coje los cabio mi tarde

[@halabja-se7hm]

Veryyyyy thank you for you

[@jasonnelson1488]

This guys great....Very informative.....I hope I can use this test on my fuel problem...I have a 2006 ford super duty van that seems to be running like somebody poured maple syrup into my tank!

[@kafi2464]

Jason Nelson Naaa you eating too much pork 👻

[@rainierhabervo7380]

Thank you so much Sir

[@CarsNToys]

Welcome

[@daryusharash7790]

Thank you so much. Very helpful video. It makes it so simple to locate, understand and test a fuel relay. Going to try it on my Fiat Panda (1988) before I try to take out the pump which is so difficult to access and remove. I add you to my subscriptions.

[@frankzamfino23]

excellent presentation.now i know what the symbols on the relay mean and more importantly how it works.i am very happy i clicked on this site

[@doyleredwine1683]

I followed your link on how to test a 5 prong relay and it brought me to another 4 prong test. Great video but I need to test a 5 prong. Do you have an actual vid for that? if so where? MAny thanks

[@johnpalma7265]

Thank you sir.

[@CarsNToys]

Welcome.

[@dararoth3979]

I like this showing.

[@AliSaeed]

cool man i learned something from these 5 minutes, thanks. But i would love to see the reading on screen :)

[@thewatchman8174]

Thank you!!!!

[@RampartPh]

Informative vid. If it's defectuve, Any idea what code it gives when using an obd2 reader?

[@robran53]

Thanks for the clear video. Can you name that power source that you used here. I was looking on amazon and couldn't find it. Thanks in advance and I have subbed !

[@odair228]

Thank you

[@CarsNToys]

Welcome.

[@belaybekele2625]

wow Nice

[@PlasmaHH]

Better yet to measure the actual resistance of the relay, most multimeters beep for continuity testing at a couple of Ohms, but even a couple of Ohms relay contact resistance will drop enough voltage to make whatever is behind that act up.

[@dohc16vturbo4g63]

Car had been starting normal without issue. Yesterday, same thing then I get on the road and it sputtered once for a split second before going back to normal. Got a few miles down the road and it started to do the same thing but more intense, like hesitation before completely dying. 94 Corolla 1.6L

[@crystalhopewell3708]

Hi have a 30l td 2001 Nissan patrol just had a full engine strip and rebuild including brand new turbo and turbo intercooler an it still isn't boosting right any advice would be great thanks

[@cesarjorgemurillobarientos1813]

exellent

[@dennis12879]

just as you said go on google i was doing it and still had your vid playing so so i heard you say lol

[@mark.r8900]

Excellent tutorial. But can the relay give an intermittent problem? Thanks.

[@tauraimachingura]

Thanx

[@MickLoud999]

nice covering up the readout when you make the connection...next!!!

[@brianobrien]

Connecting current through 1 and 2 to get connectivity between 3 an 5, does that mean the current runs through 3 and 5 when installed? Is the relay in effect facilitating two seperate circuits that don't connect?

[@robdavis8386]

Any answers on a 2003 Dodge Ram hesitates when cold on reverse or turning Corners runs great when it's warmed up I don't know if it's the fuel pump or sending you I have no idea I just would like some answers I can't find the right video

[@monanevius8671]

I have a 94 ford ranger with 2.3 I am not getting power to fuel pump I checked fuses under hood even the fuel shut off under dash an carper any thoughts please

[@mckoylach1622]

If you connect power to numbers 1 and 2 on the harness side,will the fuel pump activate?

[@somgtv]

Good job hi

[@Arcturian1111]

Temp fix.. If your cars interior is hot from the summer heat it can definitely effect the relay, especially if your car is old. If your car doesn't start, air your car out first and try it. It just worked for me. You can avoid car heat, by parking under a shady tree and crack the windows.

[@k1ghz960]

Can I open this up and clean the contacts or bend the spring and get it working again? I've done this with a signal light blinker 10 years ago and it still works.

[@CarsNToys]

You probably could but these relays tend to be inexpensive. You may save time just by replacing the faulty relay. Good luck!

[@urbanlovesrural]

Hi, I like the ending music, did you create yourself or is it someone else’s production?

[@robertogarcia35]

Thanks for the tip, I hope it works for me

[@CarsNToys]

Glad to help.

[@ryans413]

Mine was a bad relay not sending the right amount of current to thepump causing it to run weak and it couldn’t build up the right pressure. New relay now pump gets its full power

[@simbatinashelotlot4431]

Good morning have got problem on locating PCM relay for ford Transit dura torque diesel

[@djpurple3920]

ok so what does 3 and 5 lead to and which goes to the fuel pump positive is it 3 or 5

[@jojobeaumont119]

Good video tight but what kind of car your working on that would really help if I knew what kind of car is this ????

[@charleshelton1662]

I've got a 92 olds 88 royale it runs while sitting in park.but stalls when I try to drive it. What would cause that.

[@rashedulhasan4215]

can I use any 4point relay. or specific part number relay.

[@johna.ishikawa313]

Master mechanic for modern p. V. Bands. 1:41

[@daveydblack6940]

Before you jack up your town car turn off the air bags switch on the driver side in the trunk.

[@josecuriel96]

Quick question if anyone can answer. I’m getting resistance and ohms when there is no power to the relay and when I put power to it I’m not getting any ohms does this determine if the relay is bad?

[@coozbayt1021]

What size/gauge jumper wire is used safely if using 12v car battery

[@mckoylach1622]

Helo, sometime there are relays with five prongs, what's the fifth one for?

[@denistuohy6420]

relays with five pins, the fifth one goes to another thing that would be powerer, when the relay is powered the pins 3 and 4 are connected but when the relay is switched off the solenoid in the relay powers down and there is no longer a connection between 3 and 4 but now between 3 and 5, its used for things like headlights, when on dipped beam the power comes from pin 4 but when on full beam the power comes from pin 5, all controlled by the switch in the car...relays with 3 pins use one of the pins as a shared earth and the other two for the circuit

[@thnkbg]

Are all relays standard? each make and model car is different?

[@sohaibjamil1099]

Hi do you know why the gas meter blinking even if it is full tank and not recognized the gas..in the whole travel it is.. please help.whats the problem thanks

[@jinalshah3841]

Which car is this? Is fuel pump relay same as main relay? I have 04 civic, do you know where it’s located?

[@madinadiesellab]

Good jop

[@johnpalma7265]

Didn't really understand the part about the wireless symbol.Your hand was covering the meter so the reading wasn't visable. i liked the part about Google,i'll have to try it sometime.Thanks for the Video

[@alikumarirani1180]

john palma

[@wdbne00]

it would be nice to know the make model and year of this vehicle in this video.

[@chazzftw9313]

wdbne00 2000 Nissan Maxima

[@armyofshea7941]

The whole point of the video is how to test a fuel pump relay. These work the same regardless of vehicle.

[@zzpiderr]

read description

[@Norrr3]

I wonder if I could hook up my trickle charger to the relay

[@savannahbrown1]

my nissan armada doesn't like to start when it's hot (80 degrees and up) outside, cranks for 3 to 5 seconds before turning the engine on. When it's cold outside (70s and below ) it cranks immediately 1 second. Does it sound like the relay?

[@cw5118]

Reading through the comments heat seems to be a factor with the relay... "park under a tree in the shade and crack the window."

[@ryans413]

I kept having random stalling when driving once it happened on the highway and that was little scary. I figured out it was my fuel pump relay seeing that my issue was very random car would always start okay but the engine would stall out why’ll driving and it alway took a bit too get it going again. I figured out my relay was bad it would cut the power to the fuel pump shutting it off and stalling the engine of fuel. Replaced it with a new relay so far so good. It’s odd that that relay and non of the rest are bad but I guess the fuel pump relay gets used a lot like every time you drive the car.

[@CarsNToys]

Interesting. Thank you for the feedback.

[@can2266]

My RR sport 2012 fuel pump is pumping more fuel than it need while engine start. Because of much fuel, it doesnt start. Can problem be fuel pump relay?

[@cw5118]

Either that or fuel pressure regulator. Even the ignition (coil) relay can cause issues with the fuel pump if the relay is bad.

[@enriquerickramirez6145]

Question I know it's not the alternator or the battery, The Car Turns Off For A Few Seconds Than It Turns Off. I don't know what else it can Be. Thanks any response would be greatly appreciated

[@creepystank420]

Enrique Rick Ramirez noone else said anything and its probably fixed by now but it sounds like the actual pump is going out. May be getting power to crank but then just cuts off

[@user-fo5sc3di4t]

I what if. I don’t have numbers or diagrams on the relay? Like h300 relay, I see coil coil or no on some of the relays.. this is for a 89 ford probe gt

[@MiguelMartinez-jq3qu]

Be way nicer if he put the type and year of the car or truck..good way to test the relays. But description of what he is working on will be the key.

[@johnhoepner1992]

Where the hoses go on a relay for 2004 Nissan frontier frontier

[@morrispulliam4218]

Well what kind of car are you working on.

[@javiertorres9666]

hello Nice video can you send the link of the Voltmeter so i can get it

[@CarsNToys]

Yes of course - amzn.to/2KOdFZD

[@jabjab12]

Just get the original relay of the car somehow. It solved my problem.

[@zahidjutt5636]

you are a good teacher

[@CarsNToys]

Thanks!

[@sholukhiungyimchunger2850]

Sir can u plzz share me ur idea because mi car doesn't work 4 beings 4 days everything is okey bt only that diesels motor does nt work bt when we check motor direct its working so can u plzz tell me y?

[@Nik.Coffman]

or, you can jump around the relay. If the pump kicks on the relay is bad

[@joshjames76]

I see you answered someone's question 2 weeks ago and hope you get this. I just had my pump replaced and when I drove it home, it stalled on the ex-way again. So from my reading, it could be faulty relay: One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall. A faulty relay may allow the vehicle to be restarted a short while later, while a completely failed relay will not. And that's exactly what its doing......The million dollar question is there a way to test for this? The towing is killing me. Thanks so much........Josh

[@CarsNToys]

Why not just replace the relay? On average, they cost $10.

[@joshjames76]

Yep that's what I did. 16.00 seemed to be the problem. I finally read an article call "Symptoms of a bad or failing fuel pump relay". Wish I had read it before the fuel pump. But its all good. Thanks for you quick reply. I was getting burnt out on being towed. Thanks

[@joshjames76]

Well its 7-31-17 and I am back to square one. I dove it home yesterday; no problems. Today I drove about 40 miles fast and slow. I pulled into a parking spot and it stalled. So keep driving and I turned and it stalled at a stop. And then again in a parking spot. Then it ran fine and I went to wash it at the end of the day and it did the exact same thing is did in the beginning. Stalled at the car wash : died. And I couldn't get it started. Tried 4 times. Nothing. Then I figured I would wash it. Then I tried again. Nothing. Then I prayed and it started and got it home, but it seemed like it struggled on the way. I am wondering what else could it be? Any ideas? Running out of money. Andy thoughts would be great. Thanks Josh

[@seseborosaretin1261]

joshjames76 did you figure it out? I’m having a similar issue with my 2009 Toyota Corolla

[@thewingmakers161]

@@seseborosaretin1261 Did you figure it out??