How To Diagnose A Fuel Pump Failure - EricTheCarGuy

[@seniorgary9640]

I have learned that if you use a transmission funnel in the fuel fill tube it will magnify the sound so much you can stand at the drivers door and hear it quite well

[@Samuel-I]

Great tip .👍. I’ll def remember that one.

[@toggle_blackbox9125]

I used my oil funnel, still worked

[@codymarsh8117]

Cool tip

[@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.

[@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

[@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🤣😂👌🤣😅

[@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

[@SOLDOZER]

Its a chevy so you dont need to waste you time. You know its the fuel pump.

[@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.

[@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

[@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.....

[@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.

[@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.

[@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?

[@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.

[@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

[@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.

[@selespeed3]

Doing to feel pressure test is it really redundant because you already know the fuel pump is not working

[@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.

[@DashHoundRacing]

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

[@jasonsaunders9640]

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

[@NeonN3mesis]

38 seconds is far too long of an intro for car maintenance videos. Just get to it and do all your flapping afterward. If I'm impressed with your work I'll watch the whole video and see that. Nobody cares who you are until you help them fix their stuff.

[@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.

[@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.

[@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.

[@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.

[@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?

[@bobgraw8996]

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

[@dreday6369]

🤣🤣🤣🤣

[@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?

[@brianveltri3107]

You should of asked him why there are so many warranty claims on airtex fuel pumps?

[@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!

[@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?

[@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.

[@ahmadmustafa263]

Or you could have some one hit the tank with a stick while you try to start it. If it starts while you’re tapping the tank, it’s 100% the pump. Quickest possible way of diagnosing that

[@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

[@skweekah]

I like Shane. He looks like an OK guy.

[@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

[@livinglargeandfree8322]

Airtex pumps are garbage from what I hear

[@ericthecarguy]

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

[@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

[@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.

[@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

[@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.

[@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.

[@robertblaricom]

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

[@ZombieLincoln666]

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

[@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

[@karaokehangout]

thanks ..lol...I was pumping my pedal it would hold acceleration as long as i was manually pumping ,,now I have a bad cramp in my leg from 2 hours of pumping ...I am a mechanic who had a brain fart ,,but I had enough sense to re-qualify my brain as a good mechanic to watch this video ..What I did not understand was this ,,How was I able to pump gas to my fuel rail enough to keep it running ,,I figured this 1 out ..the fuel pump has 183,000 miles on it ..You ready to laugh ,,I thought Timing Belt

[@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

[@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.

[@briansmobile1]

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

[@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?

[@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.

[@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.

[@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

[@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

[@fungoorstitch]

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

[@ltsgoyanks]

Often times (and one thing that wasn't specifically covered in this video), especially GM vehicles, the ignition switch directs current to the fuel pump. If you have a crank no start, your ignition switch could be the culprit (more often than you may think). This may explain your intermittent start and shut downs. Wiggle your key until you hear the fuel pump prime.. if you can.. prob time to change the switch... or check for brown outs where the harness connects.

[@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.

[@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.

[@godbeIess]

No shyt. If the pump does not run it is easy. How about if we do hear the fuel pump run? How does that get diagnosed?

[@simplythebestcoffee1]

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

[@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

[@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.

[@NeonRedVans]

Ok so I came to this because I was driving the other day and out of nowhere my car just stopped like it wouldn't go when I hit the gas and it wouldn't stay on so what does that mean it also leaked antifreeze alot so idk I guess I'm gonna go in debt

[@likits1999]

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

[@williamarden5441]

A 6v flashlight battery is a good way to check relays as well ☺

[@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.

[@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

[@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.

[@kenbrown4425]

Guys your making it more work then it needs ... check the fuse and relay then use starting fluid to see it the engine fires that then will tell you the fuel pumps out .

[@VashStarwind]

It would be harder to undo the airbox to add starting fluid, than it would be to just hook up that gauge and see the pressure.

[@WillGold1102]

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

[@djblitz1985]

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

[@jeremytaeza77]

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

[@ElevationBonsai]

I have 99 f150 no start. Only with starting fluid. But pump relays and fues all good.??? Any suggestions

[@snowballjennjenn2825]

bad fuel injectors, clogged fuel filter, weak/failed fuel pump

[@jussomdude9357]

Its pump..I wasted 80 bux buying a regulator and filter. 8hr later..same shit...if you have weak initial pressure (49 and below lbs)..and u dont have leaks....its the pump...if you build pressure with key on engin off..but wont start...verify you ig control mode is good,that u have spark..make sure your security light ain't on...or if you hit a bug curb or been in a wreck..the inertia switch tripped.... if your plugs r wet but let spark..look at you reg leaking or the injector lines are leaking..injector leaking....

[@shevinsacrey5862]

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

[@petecoccaro5750]

save 5 min and bang on gas tank with hand...this usually gets the pump to jump on...just sayin...

[@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....

[@THEMAN-fl1ei]

Ck the fuel cutoff/inertia switch .. first. From a guy that purged tge fuel lines of air on a 1968 MF diesel tractor. All the OS guys are taking dirt naps, no manuals exist online. 2 weeks to trace and reverse engineer the issue n fix.

[@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

[@RochaRogelio]

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

[@matthewburns6843]

ROGELIO ROCHA between 55-65 Psi.

[@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.

[@barrya.6212]

4:35 ---I FIRST CHECK WITH FLASHLIGHT TO SEE IF CRITTERS MADE A NEST ON TOP OF TANK AND USED F.P. WIRING FOR NEST MATERIAL.. BUT THAT'S JUST ME....

[@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

[@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)

[@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

[@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.

[@sincitydude7296]

hey Eric Great video. I have a 96 Grand Cherokee and I replaced my fuel pump with an Airtex a little over a year ago and this morning I broke down. I can hear a constant whining from the fuel tank when I turn the key to the on position. in the past it should only have lasted two to three seconds but it continues to whine, any thoughts?

[@Fer9617]

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

[@llilium]

so the part i needed help with (checking whether there's signal going to the pump) is not actually included in this video. *sigh*

[@fredantol7879]

You can't tell if a fuse is bad by looking at it....use an ohm meter.

[@sabrinaturney353]

You can now with the open clear view on the fuses like he showed in the video....

[@tammylynn5271]

A friend has a 2000 Isuzu Trooper. Takes 2x to start. In the morning it starts right up on the first time. If you drive it to a store and come back out it takes 2 tries for it to start. It has stalled a couple times when parked running. I listened for the fuel pump and the 1st try I heard nothing the 2nd time I could hear the pump. I checked the fuse and it was in tact and also checked the relay and it was fine. Is the fuel pump going bad? Thank you

[@Shamri212]

You didnt check to see it the fuel filter was clogged skipped that step or i didnt hear it mentioned. Before you replace a part that costs anywhere from 100 too 400 dollars, to see if a part that costs 1 to 10 dollars might be the problem. I have a Eclipse GST checked everything but what needed to be checked and I guarantee it will be that issue on my car that is stopping it from starting up. Stay tuned.

[@gordbaker896]

Often the Fuel Filter is inside the tank, attached to the Pump.

[@NsgAce]

The Gaming Lobby you did not have to check the filter if u heard nothing when listening for the pump to engage u know then the issue would be in the take it self. If u heard the pump start then yes filter for sure after fuses AMD relay...

[@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.

[@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

[@amycebuhar7954]

How would you go about doing this with a 91 Mazda b2200 that the fuel pump is located apparently next to the engine?

[@ginamarieh7691]

A few times I've felt a tapping in the engine coming from behind the gas pedal when accelerating. My husband says it means my electronic fuel pump is going out. Has anyone had that happen?

[@pure555]

Almost like the car feels like its jumping when you accelerate?

[@bmaiceman]

You are making it to hard.. 1 check fuse 2 check relay 3 cycle and check for fuel at valve 4 spray fuel into intake. If it runs and dies and no fuel in Schrader valve.... Pump is bad

[@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!!

[@bmwn5238]

hello so I have a 2007 Mercedes benz s550, the plug without being connected to the fuel pump reads 12 volts when press the start button and engine cranks , 0 when ignitions is only on ,,when plug it back in to the fuel pump and i press start button it read zero and engine only cranks,, the fue pump did not run on bench test at12 volt but it did run later on ,, you think i have abad fuel pump or i need to check the whole circuit , i hioe you can give me some ides thank you

[@jorgejrdelfino]

Hello,Eric can you please,give me an idea,why my 4k engine car,it start revolution, but when you leave the accelerator it stop, what is the trouble on this? thanks.

[@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