How To Diagnose A Fuel Pump Failure - EricTheCarGuy

[@sammytheswitch]

My neighbor watched your video last night and we followed your advise this morning. Got it started without having to call a tow truck. On behalf of my neighbor and myself, thanks for taking the time to post this video. God Bless

[@johnswift3809]

So what did you find tell us

[@q-ball6212]

​@@johnswift3809🤣😂👌🤣😅

[@tiredowalkin]

Update: I ended up replacing my fuel pump module with sending unit today, before I bought the new AIRTEX unit, I plugged the pump into the harness and cycled the key, and the pump worked, so I figured the circuit was ok just a quirky old pump. The new AIRTEX pump was easy to install and the car once again runs great! This video was a great help! Thank you!

[@spelunkerd]

Another brilliant video, Eric. This actually happened to me while I was on vacation with no tools. The local general mechanic helped me out, spent about 90 minutes figuring out what the problem was, and charged me $20 when it turned out to be a fuse. I think he was feeling a little sheepish when he took so long to come to the diagnosis, but he was such a great guy. Salt of the earth. I did my best to help him out when he came to me years later with a problem in my area.

[@nestorramirez2248]

What fuse?

[@spelunkerd]

@@nestorramirez2248 Fuel pump fuse, usually in the underhood fuse box. It draws enough current so it is usually controlled by a relay.

[@dustinwalters1717]

Wish I heard more about good people like both of these men. Not enough good people left. God bless u both.

[@amandacaldwell3519]

This video was a life saver. I only had fuel pressure of about 15 pounds and replaced fuel pump. Lost power to the new fuel pump and was at wits end trying to figure it out. Relay tested good and so on so forth. Had no clue about the ECM-B fuse until this video. My bad for not unhooking battery during replacement of new fuel pump which is how it got shorted. Vehicle is a 2001 Chevy Express passenger van. Just want to take this time to say thank you, really helped an amateur mechanic out.

[@e.duncan6256]

Eric, this addresses an issue I’m dealing with right now, I subscribed a good while back, but I’m thankful to have come across this video today. And as a head injury survivor, your method of asking “what’s the first thing to do...and the next we should do is...” and then review the steps, isEXACTLY what I needed because I have trouble following a lot of information at once. Thank you, thank you, thank you!

[@q-ball6212]

God bless

[@bradparker6566]

Step 1) Check the fuel gauge, the Tank could be on "E"... Step 2) Check DLC and see if theirs any trouble codes(could be a faulty Crank Sensor or something related... Step 3) Battery Voltage Check... Step 4) Spark... Step 5) Fuel System(if still haven't found the problem)... Step 6) Compression Test... This is probably the best formula for any No Start Diag Test! I love all your video Eric, keep up the good work. Pretty soon the average joe would know how to diagnose there cars from these KZbin videos and us Technician would be out of work lol.

[@johnswift3809]

Really,,compression test? R U charging customers? If you can't tell compression is not the problem while you're cranking that car you probably shouldn't be diagnosing it

[@nevursleep]

139 idiots don't know good advice when they see it. Great videos Eric. Thanks from the mechanically challenged. You've helped me through a couple problems already this year.

[@nyag1764]

Guys, this is awesome. Thank you so much. Single lady here needing help properly diagnosing my car problems and my did this help! Much love and support from Austin, Texas.

[@ericthecarguy]

@07hdflht I like to test them that way myself, in fact I often use my trusty power probe because you are correct that a fuse can look good and still be bad. The idea behind it was to encourage people to check the fuse first as it could be a very simple fix. Thanks for the comment.

[@jasonsaunders9640]

You saved me so much hassle. Short story - Fuel pump relay was not well seated. Found it from your video. Thanks!!!

[@johnbarthol6493]

Great videos Eric. With our 2003 Suburban, I did all these things and then used the side of a hammer to bang on the gas tank. That was enough to get the fuel pump started so I knew it was the pump. Sometimes this may not work depending on the mode of failure. We have had three fuel pumps put in over the life of the vehicle and all three times that little trick worked to get the truck started temporarily.

[@HustlinSpartan]

actually my friend showed me a neat trick, if you follow the fuel line from the filter to the fuel rail you will see a big bolt on top of it. Just losen the bolt a little bit and turn the ignition to "On" and fuel will squirt out of it...if it doesnt you know you have no fuel pressure.

[@garrygemmell5676]

Brilliant that banging on the tank really works - sometimes the pump heats up and the car can drive when you first start it in the morning but i ended up getting stranded in all sorts of places - wait a few hours and the car would start - from what i can gather its a worn pump heating up and that snafus the startup. Love the vids Eric - Hoots from Scotland!

[@Rama-po6xw]

I see exact issue in car. Can I confirm it as bad fuel pump?

[@jorgecarrasquilla]

Finally a serious, well broken down video for guys that really want to work on their cars but just need a little guidance so they don't go changing parts without first doing a real deal diagnosis of what could be the problem! I can tel y'all just want to help...Thank you guys!! I'm gonna try this tomorrow cause I really think it's the fuel pump but just wanna be pretty sure that's what it is. You guys are alright by me! Keep it up

[@ericthecarguy]

@6poundsoft Perhaps in the next video. Is it just me or is it that every time a fuel pump goes out the tank is full?

[@meandi4437]

EricTheCarGuy , mine had over 26 gals . Had to raise the bed .

[@slidenthru9203]

fuel pumps go out when people drive the vehicle until it runs out of gas

[@brittanymills3191]

Mine has never been ran out I refilled it at a quarter tank to full have 25 gallon tank and the pump isnt working magically

[@slidenthru9203]

@@brittanymills3191 fresh off the lot first owner with low miles ✅ 2nd owner & high miles ❌ add a fuel pump with your tune up

[@brittanymills3191]

Mine is going to the shop tomorrow drove 2 minutes away to a gas station and everything works but not the fuel pump

[@langdorn]

These types of videos probably seem mind-numbing to make and explain but the linear thought, repetition and reviewing makes it easy to understand in diagnosing these issues. Some experts can't avoid telling you EVERYTHING they know in these how-to videos. Thanks for keeping it simple and breaking it down!

[@epiphaknee]

A great video! I'm glad you selected a GM Vortec because this is going to happen eventually and you might as well be prepared for it. On the way out, the whine of the fuel pump many times will change, both at prime and when the vehicle is running. Also, longer crank times will typically occur when starting the vehicle. But the end result is always the same - a no start condition.

[@autoparts321]

I was going to ask the same question / make the same point. If you listen for the pump first and you don't hear the pump, then there's no point in checking the fuel pressure. Its only if you hear the pump and its still not starting then maybe check the pressure. If the pump is silent then check the electrical. They also didn't mention checking for power at the pump harness connector by the tank. Usually you can do that before pulling the tank, in case its a broken wire or bad connector.

[@suzintru1]

Number One: Make sure the car has gas in the tank. Number Two: always check for a clogged fuel filter! Then do the steps that Shane recommends.

[@adventures223]

Most of the time the fuel filter is attached to the fuel pump so bad filter bad fuel pump or you might be able to replace filter but i would just replace the fuel pump because it probably wont be long before it goes out either way you might have to drop the fuel tank unless your lucky and its under the seat

[@manuelramos4608]

@@adventures223 you’re correct, that’s mostly old cars that have that fuel filter outside of the fuel pump.

[@mikeschrader5589]

@@adventures223 99

[@leonardkellum6984]

i was looking for a comment concerning the filter. I have the maintenance manuals the dodge mechanics used on my 87 caravan, and after testing pressure at engine - if none , check at filter.

[@Dan-kz3ws]

​@@leonardkellum6984Xxx

[@djalextnt]

Probably the most helpful fuel pump diagnosis ive seen on youtube

[@ericthecarguy]

@v7nf Keep in mind the pump will only run for about 3-5 seconds when you turn it to run, if the pressure bleeds off quickly it could be the fuel pump itself as it has a check valve in it to help maintain pressure when the vehicle is off for faster start up. A pressure drop could also be the result of a leaking fuel injector, in fact I think Doge's have an issue with that.

[@Donmud]

@Ericthecarguy - Ive been working on cars since I was a teen and I must say every time I watch one of your videos I learn at least something about anything GREAT JOB!!

[@donmelbouchard]

Love the order: start simple and move to complex. Start with cheapest options and move from there. Good, down to earth explanations. Thanks, guys.

[@MrJaimesJ]

I've read on some forums that another thing to check when you suspect a fuel pump problem is the power and ground voltage going to the fuel pump. I believe you can check the power and ground using a multi-meter. My question though is where you would connect the multi-meter to so that you can get a good reading to diagnose a faulty fuel pump?

[@heyitschinoable]

Backprobing the connector

[@hanzhigareda4423]

on the first step, what if you do hear the fuel pump when turning the key? does that say its not the fuel pump? is it possible that the fuel pump turns on but does not have enough pressure in the output? thanks

[@Slam_Chunky]

Hanz higareda I'm also wondering this. I'm going to check the fuel pressure anyways

[@MiguelRPD]

Check the pressure anyways.

[@Slam_Chunky]

Turned out the pump was running, but not steady enough to start the truck. I turned the key to engage the pump without starting it. I did that a couple times before trying to start just to get more pressure in the lines and got it to start right up.

[@Kieva_Storm]

Conversely, you may not even hear a modern fuel pump prime. Only 'good' way to verify a Fuel Pump's performance is a Fuel Pump RPM test.

[@tommieduhswamy6860]

Some GM models have poppet valves rather than fuel injectors. This system needs higher pressure to open and operate the poppets. Typically 60 to 65 psi. The pump may operate but not be able to provide ample pressure. OEM or similar is the better option when purchasing or replacing.

[@franklancaster3576]

Another thing to check is the fuel cutoff or inertia switch which is designed to trip and cutoff power to the fuel pump in the event of an accident. Sometimes they trip or fail with age. Press the reset button down to reset the switch if it should be tripped.

[@ericthecarguy]

@viggoM35 Not the engineers fault I can tell you that, keep in mind everything you just mentioned costs money and raises the cost of the vehicle as well as production cost.

[@tommieduhswamy6860]

After checking that the relay is functioning and, indeed, working would it not be prudent to probe into the wire feeding power to the pump? Rather the dropping the tank or removing all kinds of connections this test may save several hours. If there is no power to the pump it may be a bruised or damaged wire or possibly a fault in the connector to the pump but a probe would not be the proper procedure. A visual inspection would be better or a contiuity test.

[@BoZo325]

Hi Eric, In some cases you have to crank the car to check fuel pump running, week ago i had an old Audi A4 witch the fuel pump was running, only if you crank the car. Greetings Apo

[@SteveBlackOnline]

Thanks for the video. This will prove helpful. For me step #1 was to check my fuel cutoff switch since the car died and refused to start back up after experiencing a front drivers side blowout. I haven't tried any of your steps yet, but I'm praying it's the fuse or relay. I drive an '89 Ford Bronco 351 Windsor.

[@ericthecarguy]

@wizkid01 Yes I agree, the plan is to make another video talking about continuing the diagnosis at the tank. Thanks for your input and comment.

[@Latrodectus937]

Nice good professional instructional video, but you failed to mention a couple things. Checking for voltage at the fuel pump electrical connectors, and checking the fuel shut-off inertia switch usually in the trunk in Ford vehicles. I am convinced the fuel pump in my 2001 crown vic interceptor has failed. Not looking forward to pulling the tank to get to it. Why do they put the pump in the tank?

[@driveability]

Very nice Eric, I would only add to strongly emphasize the re-setting of the engine computer between each attempt in energizing the fuel pump. Many systems need a 10 second off time in-order to get the engine computer to trigger the fuel pump / relay. You know these systems so well little things like this can sneek by the adverage DIY. Great Job !

[@rickyjohnson504]

Because it was correct

[@seandonovan4186]

I like the no bull crap type of video this is. So many videos nowadays take 20 minutes to say 3 minutes worth of information.

[@ericthecarguy]

@streetkingz24 I'm glad to hear the video helped, thanks for the comment.

[@CoreyTibbetts]

Before pulling the fuel pump check the inertia switch (fuel pump cut off switch) usually under the dash to see if that's tripped, could save you hours of time

[@Ripcurl552002]

Only Ford uses inertia switch.

[@plcreman]

If a relay clicks that doesn't mean it's good. Could have high contact resistance that would cause low voltage to the pump. On my suburban the horn relay is the same part number. I swapped them around for a quick test. Better test is with a bench power supply (12v) and a multimeter set to lowest setting. Contacts should read less than 1 ohm. Sometimes your leads will read .2 .3 ohms.

[@HOTRODRICO]

interesting point.. thanks for sharing

[@lotusman564]

swapping is good

[@panderofdeath]

@@EB-wi4bt in case you haven't fixed your car check your air filter isn't blocked and your spark plugs. If that doesn't work then it might be the pistons losing pressure or the timing belt. But if you aren't sure about what you are doing always have someone who knows to help you

[@marks5625]

You are amazing eric. You do a great job of explaining everything in detail but you do it in an easy to understand way. I have learned so much from you and am still learning more. Thank you for your great videos and your great effort. Appreciate you.

[@jameslawson8581]

Love your work Eric. Also, check the inertia switch. Like almost all my car problems, my pump works sometimes and sometimes no. 98 ford Explorer, I hate to drop the tank, but at 180,000, would not hurt to do it anyway. Might be a dead squirrel in there or something.

[@Meatwad.Baggins]

This was 9 years ago. Did you find the squirrel? 🧐

[@lijahcorral5772]

Bro this is my exact problem literally thought I wrote this comment bcuz everything u said is my issue 180000 miles and pump works sometimes

[@blackiechong4344]

Eric first make sure it is not out of gas

[@rsga011089]

cmon blackie, really -_-

[@blackiechong4344]

+SG rcelo Just some little humor to brighten your day. No kidding as this happened to my neighbor once. He could not get his car started so he changed the coils and plugs and fuel filter. He dropped about 300 bucks total then he called me. I went over and very soon found he was out of gas. Fuel gauge read 1/4 tank but put in a gallon and a half then it started and ran fine. moral of this is make sure you got gas.

[@rsga011089]

My car didn't work when i installed the fuel pump, so i just give up and called a mechanic. The mechanic came into my house to check the car and it took him an 1hr and a half to find the problem. He went back to the fuel pump and disassembled it, then put on some lubricant to the parts and cleaned it thoroughly. And it worked like a charm..

[@TheRazvy1990]

oh my god you are right...i have a friend with a fiesel car that not star....he remove the fuel injection pump...verigi everiting...and than he look....and the fuel gage broke =)))))))))

[@kevinkelly1157]

smh......then DAMN diesel cars.

[@bill7774]

One trick is to swap the relay with one of the same ones. AC relay for example. Could get you back on the road if it was bad until you could replace it.

[@randolphpatterson5061]

+William G Great tip!

[@TheMrchris1234]

excellent point, William G!!!!!!!!! they are identical on my pathfinder. and in the video he says to check fuel pressure. if the pump isn't running, which was confirmed in the beginning then there is no way you're going to have fuel.lol pressure so why bother checking the pressure until you know the pump is active.lol

[@jjmccloud]

@@TheMrchris1234 That is what I was thinking lol

[@walterb.7978]

First of all thanks so much for posting this video, I should mention one more thing to check for before replacing the fuel pump, that would be the fuel pump safety switch. Although not all cars are equipped with one, my 2002 Ford Explorer had it right under the glove compartment on the passenger side, all I had to to is hit the reset button on the safety switch and that got me up and running. good luck and thanks again for taking the time to post this video.

[@TheJetty2007]

what about the fuel filter? dont you check that before moving to the pump?

[@longstar550]

you will get some pressure in almost all cases if its a filter

[@TheJetty2007]

Change filter only cost me $6 bucks still no start unless I hold the throttle in a press position

[@TheJetty2007]

Oh i change the throttle body sensor with a cheap one lol , before it would not start then started one time with alot of dark smoke and a back fire flow back in the air filter box , I had code reading P0122 and P0101 but after cleaning the maf with the appropriate cleaner the code went away

[@TheJetty2007]

I appreciate your help , I'm I still looking at a bad MAF sonser?

[@thatguyb3rt]

Usually unless it's really plugged up (which is rare) you'll still be able to have the engine running but it would die at higher rpm due to low pressure

[@davidforrister9597]

Hey guys, maybe I'm wrong but based on the fuse box lid, the fuel pump relay is that black relay, opposite side from that white relay. Please watch video and confirm here. Eric you have helped me so much in the past on my 2004 Bonda Element. So I was thrilled to see a video on the Silverado. I'm trying to help my grandpa with his. P,S. Hey Eric, so far your videos have saved me (keeping a running tab), $2,570 on Mechanic repair cost on my Hond Element. Your a Boss!!!!!

[@scotts9961]

Thanks a lot for the video......but want to let you know that while he points correctly to the Fuel Pump relay on the cover schematic at 2:20.....at 2:27 he is actually touching the Starter Relay, not the Fuel Pump relay.....it is the black relay at the end of the row, not the corner one....

[@stylicho]

Hey Big E, I've got a question for you. Would the fuel pump or pressure regulator be responsible for fuel pressure dropping from above 30 to 0 within a second or two from turning the key to the on (not running position)?

[@Ohe11itsODell]

Yes, regulator could be losing the fuel pressure for you. Currently going through this myself

[@matt8863]

Had a no start issue with an F-150...Turned the ignition to "On" and went under the hood, removed the Schrader valve cap on the fuel rail, then inserted a small tool and very lightly pressed the pin and no fuel sprayed out. That's my way without the pressure gauges.

[@lissaleggs4136]

Shade tree mechanic... 🍩

[@Terryblount]

Can't you just loosen the fuel filter and expect some leak?

[@matt8863]

@@Terryblount I wouldn't do that...Why risk a fuel spray to the face?

[@bluedistortions]

true that. have you seen the "load pro"? you could build your own, but it's so slick and simple. money's tight but i'm really thinking of getting one. you just keep it on your multimeter like a normal probe, then click and check the voltage drop, click and check the wiring harness/connector

[@likits1999]

Awesome teamwork! Clear and concise explanation! Thanks gentlemen. Now I can diagnose my fuel pump.

[@toddmeier9743]

Thank you for making this relatable for those of us who aren't mechanics!

[@MudRFunR]

Awesome video Eric! Thought I'd mention that GM's often have a bad ground wire from the pump to the frame. That's one thing I always check.

[@corywilliamsmith]

Interesting

[@lanajantz2240]

Yes I see ground you speak of.

[@autoparts321]

sounds like some electrical short under the dash may have melted some wires or perhaps a component burned out. If your pump comes on and wont start, and you still have fuel pressure at the fuel injection rail, you probably have an ignition problem. Are your dash lights behaving strangely still or was that just momentary? If your check engine light is staying on, read your engine diagnostic codes, that might help point you in the right direction

[@TDBash]

Good video..however you failed to mention how to identify theinline schrader valve to hook the fuel pressure gauge to. For the novice, it would be easy to make a mistake and hook the gauge to an a/c line On older vehicles.

[@humptymixer]

Ok, here you go. The schrader valve is on the fuel rail and looks like a tire valve. The a/c line runs from the compressor and can not be connected to a fuel gauge, it is much larger. If you confuse these two valves stop what you are doing and tow your car to a repair shop.

[@jaysmith2340]

If you're that stupid you might as well not have a vehicle take the bus or taxi

[@nyacoustics8373]

what if you did have fuel pressure when you did that compression gauge test? then what could it be? my car will crank and crank then will start and run fine after several attempts?

[@DashHoundRacing]

Hate to have to need this video, but thank you guys.

[@chantaleharper506]

What if you do hear the fuel pump turn on, but still very rough start, no start, & no pressure

[@allaboutroofing2]

Clogged up fuel filter or an obstruction in the fuel lines? I know this is a year old, what was the issue? (Maybe it will help someone else)

[@doctorbillzable]

Excuse me sir I have the same truck and you were checking the starter relay the black one is a five pin and that's your fuel pump relay fail!

[@frankmagowan7400]

I had to check the video to see. You're totally right the Airtex guy shows you the fuse box cover and points out where the fuel pump relay is in the diagram, but misinterprets it and points to the starter relay lol.

[@doctorbillzable]

Frank Magowan I'm sure it was an honest mistake.

[@frankmagowan7400]

+Stevie Wonder For sure. And I can definitely relate though. I've read those damn things upside down initially countless times

[@anthonyskorner4511]

Old Post here, but you guys gotta know someone from these companies is not going to know much. I knew that about him as soon as he said remove gas cap to listen for fuel pump.

[@RochaRogelio]

what would be a good pressure for a gm 3.4 6 cylinder.

[@matthewburns6843]

ROGELIO ROCHA between 55-65 Psi.

[@amused2deth]

I've used an Airtex Fuel Pump. They are crap. Mine lasted 2 years. Went back to OEM and hopefully it lasts a lot longer!

[@chidude]

Same thing happened to me.

[@oneidarivera6272]

*****

[@jussomdude9357]

Well Delphi is 200+. I cut a hole to gain access and now I'm waiting till Tom to get my 50$ airtex pump..even if it dies 6 months..I can buy a few..drop em In and still not pay 200+ on parts labor

[@2ub40]

my 1996 Corolla the engine went on for 1 second and then it turned off. Turn it on for the 2nd time and it did the same thing. The third time i pressed the accelator for a couple of seconds and it stayed on. Could it be a faulty fuel pump?

[@simplythebestme]

I love how the videos are in such detail. Great advice and very detail oriented thank you

[@america10ism]

Hi Erick, there's a buzzing noise on my 03 Yukon and when i try to started goes off after few seconds, do I still need to follow your instruction in order to determine whether the pump is bad? or just go ahead and replace it. Thanks in advace.

[@wvresident7004]

Some times relays can go bad and still click. You can also tip the bed instead of dropping the tank, take the bed bolts out of the dr side loosen the bolts on the pass side and tip the bed with a board on hand to hold it up. Tipping the bed is a better way if you don't have a lift or don't want to be on the ground alot.

[@zmarssojourner7435]

WVresident what does "tipping the bed" mean?

[@jjmccloud]

@@zmarssojourner7435 I think he just means lifting up the drivers side of bed and propping it up with a board or something and the other side stays attached but bolts r loose so it'll move like a hinge kinda but still stay attached to hold that side

[@jussomdude9357]

Yea relays dont go BAD all the sudden.more than likely..a broken or rubbed wire causes a relay to go out

[@valobana506]

Hi, there Eric. My '95 honda civic esi acted up (again). The engine was just cranking but won't start. First suspect was failing distributor but was eventually ruled out after testing showed there were sufficient sparks on all four sparkplugs. Went for the fuel pump after seeing this (5.32 min.) video. First found that the "click" sound that is usually heard 2 to 3 seconds after putting the ignirion key on was missing. I replaced the old pump with a Denso pump assy (part #195130-2181, if ever this matters to you). I had a good start and my engine is off running. This however, was good for 2 to 3 days only. Now, i'm back to the same problem of just engine cracking but no start. Watched some other videos and did the suggested manual pumping using a bicycle pump on the gasoline lines, with postive results each time. Problem is, the no start condition comes back again. The "clicking sound" is not audible most of the times, and result to no engine run, but comes on sometimes and i give me an engine run. Did i buy a faulty new fuel pump assy, or there is/are some other places i should look for the problem? Thanks very much and am hoping you could have time for the reply soonest. Keep safe!

[@bobgraw8996]

"Mama always had a way of explaining things so I could understand them" - Forrest Gump Thanks Eric

[@dreday6369]

🤣🤣🤣🤣

[@charlesb5318]

Hey Eric, do you have a video that shows you how to tee into a fuel system that has no shrader valve. I have a 1996 Pontiac Sunfire with a 2.4 liter engine and it has no shrader valve, the shop manual tells you to tee into the fuel system but fails to tell you how to do it.

[@jamieclark6338]

Hi Eric, I wanted to point out a few things. Not because I think that you don't know, but so people that don't do not miss any steps. First, just because the relay clicks does not mean it is good. Not sure if you have a video on how relays work but it would be a good little video for people. Also I didn't hear you say anything about checking for battery voltage at the fuel pump connector. If you don't check for voltage at the pump you could replace a 200$ part when the problem was an open in the circuit. Thank you for your videos Eric.

[@jjmccloud]

How do u do that just hook up the dmm to pump wires and watch for voltage when key is on

[@josejuarez2452]

I'm also having that problem right now 2006 impala 3.5 I'm getting spark I turn key and I can hear the pump buy at my gage shows no pressure and it won't start I just put new fuel pump

[@BARK3L]

Jose Juarez Did You Ever figure out the problem ?

[@josejuarez2452]

K3LBR00K yes sir the gage I was using the one that connects to the port it wears out on the bottom and it start leaking all my fuel but I also had a another problem for no start cylinder 1 has no compression at all. the rest were ok

[@panderofdeath]

You also have the inertia switch that will cut off the fuel pump

[@RoyStevenUngKengSoon]

Hi Eric, what would the diagnostic steps if a Nissan car has no power going up hill even though you floor the gas pedal. Same when it is on a flat road, it takes time for it to pick up speed and there is a weird whirring sound (coming from the engine side) when I hit the gas

[@dlroberts20020]

Hi Eric thank you for your channel. I would like to suggest that it would be helpful for DYI like myself to also see and hear what does work in addition to what doesn't. For example, when you said when cycling the key we should hear the pump hum or buzz. In this video, we don't hear the sound. Using a different car, it may be helpful to show what the sound would sound like if the pump did hum or buzz. Another example is when you use the pressure gauge and this example has no pressure; it helps people like me that need info slow (lol) to see what a good pressure looks like. Anyway, just an idea. Thanks for the channel. David.

[@zinncomicsandart8811]

if it cranks but does not start and you suspect the fuel pump you can get somone in the car cranking and you can hit the bottom of the tank with a rubber mallet or similar item as they crank , if this makes the car start the pump is bad . Hitting the tank jars the pump and allows it to make contact and spin . Saves a ton of time on diagnosis , and I've done it tons of times and it always works .

[@tspriggsabq]

You can also have a fuel pump on its last leg, but it still works. I had that problem. I had some hard starts and also poor acceleration. a shop said they measured the fuel pressure but it was good. Since I had about 175K miles, and I wanted to keep the car indefinitely, I thought it was worth replacing--plus I just had a gut feeling it was a bad fuel pump. Don't forget to drive off most of the fuel to like 1/8th of a tank.

[@tonyamilbry9451]

So did it work after replacing the fuel pump

[@fungoorstitch]

You could also have a bad ground wire situation that's just delightful to try and find.

[@cruyeda]

My wife bought a new Audi Avante. After a year, the fuel pump got noisy enough to hear while sitting in the car. I told her to take the car to the dealer and tell them the fuel pump was going bad. I told her to tell the mechanic that it sounded like an electric razor on a countertop. She did and he agreed it was a fuel pump. They never changed the pump and one week later, it failed and she had to be towed home. She was pissed. The car was fixed under warranty but the kinked a line from the tank, which build up pressure. You could hear the pressure leaking from the fuel cap. She took it back and instead, replaced the fuel filter. I told her to drive the car and the line may unkink. she did and it did. I don't really trust mechanics anymore......

[@lufia1624]

never trust a dealer. they have no reputation to protect so they'll sheist you out of your money any way they can.

[@BLWTV]

07 chrysler aspen ordered fuel pump off kinda my own guess . But went back to problem solving and smelt gas and pretty sure I heard pump power on . Any suggestions or advice to point me in any direction

[@BrandonNe59]

One way to find out if the fuel pumps bad is if the label on it says airtec

[@DENicholsAutoBravado]

You mean airtex, right? I'll admit to not having tried them. I read a bunch of forums when my mom asked, what's a good brand? The got bagged on more than any other brand in my research. I have to say though, I think a lot of "bad fuel pumps" are fuel tanks that didn't get cleaned so of course the new one is going to fail too. My local AutoZone's manager said that Airtex reports statistics on warrantied pumps and they're often clogged with crud.

[@abaubaidah]

These are quality videos, just to make sure the pump is faulty, the last step would be to check the voltage of live and resistance to ground before taking it apart.

[@WillGold1102]

Perfect demonstration. I have done all the steps and located my issue. Thank you

[@chrisalfano3938]

Hi Eric! I have a 1985 Supra that random bogs down.. Last night I took out the fuel pump to find out the Strainer wasn't on it so in assuming the strainer is clogging the pump at times.. Is there a way to get it out of the tank without taking the tank off?

[@Lazybiker88]

you shouldn't make a habit of checking a fuse visually. fuses can get hairline fractures in them from faulty production and can be impossible to see by eye. a multimeter check for continuity across the suspected fuse is the correct course.

[@RYDENROAM72]

if you dont have a pressure gauge to check it can you skip that process and knowing that there are not sounds comming from the gas tank? and everything else is ok. the fuse and relay are good.

[@Katmandu2]

!!!! Check THIS Out !!! I had a 1989 S10 Blazer that showed all signs of a bad fuel pump. I dropped the gas tank (Major hassle on an S10 Blazer), replaced the fuel pump and the problem (NO Start) condition was still there. I decided I had enough of this truck and sold it. The next owner searched for the problem for (2) weeks are finally found the culprit. Turns out it was BROKEN wires (to the Fuel pump) that were located UNDER the carpet located directly underneath the DRIVER's FEET ! NO JOKE! It was a simple broken wire that was obviously worn through by the driver's feet ! I hope this saves someone the frustrating aggravation that I went through ! LOL! - ERIC (NOTTheCarGuy)

[@allanweir2618]

you need to hook it up to a PC to chick it out go to a car place that sale parts an have them chick it ! If you cant get there you can buy one for little money at the store !

[@esmeraldavargas1709]

Is this to make sure that there is power running to it., kinda the thing you use for checking for live wires at home?

[@FGuilt]

that blows. why would chevy put wires under the damn carpet? Gotta love those F@#$ing engineers. Like, in a 4x4 blazer (2004), why in hell would they put a cross beam directly beneath the damn trans pan? or why in gods name would they design the damn oil pan to be integrated into the engine block which requires engine removal to take it off (like, I dunno, like when the oil pan is obviously leaking oil all over the damn place and I'd like to change the Fing gasket?!!! GM whyyyyy!!!!????)? Yeah, I bought a toyota... still got the blazer if anyone is interested.... :)

[@ZOMBEE305]

60% of bad fuel pump is on wires or connectors. Mechanics replace pumps right away to make MORE money.

[@FGuilt]

abel barrera interesting. I didn't know it was so common. I would say, going through all that mess of getting the tank off, if the pump is over 100k miles, I'd just a soon replace the pump. But if its a newer pump, i guess it would be better to be absolutely sure.....

[@openwingshomestead5798]

Need help! When I turn the key, I hear a click in the tank but not the normal hum/buzz when the fuel pump turns on. Fuse and relay are good. I don't have a fuel pressure gauge... If I disconnect the fuel line from the filter on the tank side and turn my key, is it reasonable to assume that fuel will shoot out if the pump is working?

[@skweekah]

I like Shane. He looks like an OK guy.

[@ZombieLincoln666]

I would lubricate any fuses and reverse the tires to start. You'll want to make sure the engine is fully modular

[@BOOSTD10SECCMARO]

No wonder Airtex Fuel pumps are so crappy. The dude can't even bother to read the bottom of the cover on relay center. Because if he would have read it. And read it CORRECTLY he would have know that he has Brake lamp relay and NOT the fuel pump relay. The fuel pump relay is the black 5 pin relay on top left corner when facing the relay center from the driver fender. I have had such bad luck with Airtex fuel pumps in GM'S replacing them 2 and 3 and 4 times in a month or 2 month period. Hell I have had em not work right out of the box. Bottom line. By an AC Delco or Delphi pump and you won't be sorry.

[@blackiechong4344]

+Robert Blaricom Correct I have worked partime at a parts store and the airtex pumps are pure shit. About 60 % of those pumps are returned under warranty after initial sell

[@wolfbeast1405]

Keep more than 1/4 tank of fuel. any less is the ONLY reason pumps fail that quickly, They ARE FUEL COOLED

[@BUSTER.BRATAMUS]

my 99 Tahoe died at wife work today..No sound from fuel pump...replaced relay, no luck..It did fire right up after introducing starter fluid, so that told me definite fuel supply problem. I did not know about that other fuse.Will try again this evening, wish me luck. Replacing the fuel pump looks like a pain unless you have a lift etc. Thanks for the video.

[@miriams8241]

Great video; this saved me 60-150 in diagnosis that even as an IT (meaning technical) girl, I could do this! Although I need a second person to turn the key.

[@marshabradshaw9906]

Hey Eric, I have a Toyota Avalon 98 that's doing the exact same thing. What do you think I should check first?

[@jeremytaeza77]

This helped a lot. Thanks for showing me how to check my fuel pump

[@yoshiko130]

Oh snap I just bought an Airtex blower motor resistor a day ago and I didnt know what kinda brand Airtex was until now. Thanks! keep making these videos, I went to automotive engineering and was a mechanic for a few years but changed professions however these videos are the best in keeping my mind fresh for my own repairs!

[@johnalenwork53]

Step 1 check for power at the fuel pump! Step 2 check for pressure at the fuel rail! Step 3 replace the fuel pump!

[@geesElement]

Hello Eric, question I have a 05 ep3 hatchback si , my car is running lean, I did a fuel pressure test and the results were 43 psi. I replaced the pump with a Delphi max psi 43. Specs on a ep3 says 47-54 psi . Question is why is my fuel pump max pressure psi 43. Should I buy a fuel pump that is higher to meet specs ?

[@shevinsacrey5862]

Great video but I wish you added how to check the pump itself once you figure all that out

[@djblitz1985]

Just a stupid question but, couldn't a bad or activated inertia switch cause the fuel pump not to turn on?

[@briansmobile1]

Another great video! I really like this one and the WELLS video/tour.

[@supr4rce]

Would you want to check the fuel filter as well, in case it's really bad? I'm getting the same conditions in my 99 GMC Jimmy, but I had the fuel pump replaced 3 years ago - could it be gone again?....plus she has a bad hesitation when I'm accelerating which never got resolved even with the pump being replaced!

[@Fer9617]

great video, thanks! pretty detailed and summary of steps at the end

[@raulalbiter1078]

hey Eric my truck is 2005 gmc yukon and it starts but till the 3 try and then it works real good.i looked for a fuel filter but this modle doesn't have one you think the fuel pump is going ban or if you have any ideas thanks.

[@MegaThunder70]

When my grandfather died we inherited his 2000 Ford Ranger that had 254,000 miles and I thought it had a bad fuel pump because it had a hard time starting wound up being a bad motor but I took it to a guy who ran a tire shop/mechanic shop apparently more tire than mechanic work and without thinking took the cap off with the engine hot no rag around it full fuel pressure everything it blew the cap probably 10 feet in the air the guy then turned and looked at me and said shit it blew the entire cap off ! havent let them work on any of my cars since then.

[@StoneGone]

MegaThunder70 kool story. Lol

[@markballard1515]

Are fuel pumps a kind of all or none part? or can they start having less significant problems before they completely fail?