Be careful using the hoses supplied with the fuel pump. One would think that they are designed for fuel but I had one collapse about 12 hours after installation. After I installed the proper fuel line everything was just fine.

Hi Ivan, you are more tolerant of bad design than I am. when I saw the access hole for the fuel pump I would have broke out the sawsall. I must give you credit for being very thorough! Rich

Great conclusion, Ivan! Never thought of checking pump speed by counting current peaks. Makes sense now :-) PS: I would have cleaned those battery terminals, but the owner is quite capable of doing it.

Absolutely nailed it, Ivan! Excellent use of diagnostic equipment and demonstration of troubleshooting process. Your videos should be taught in automotive training schools around the world. 👍

Every time I watch you troubleshoot these cars I am so glad I am retired and now only work on classic cars as a hobby. Points, plugs, condensers and carburetors. You are amazing!

Great video, lazy pump just like my lazy hip: It moves slowly

Thank you for showing how to test the pump itself with the Pico. I had no idea you could do that. Great case study.

Congratulations Ivan. @200K subscribers. Well done mate! Cheers from Australia

Moral of the story: Pay a diag man dont fire the machine gun parts cannon 😁 great video 👍

I'm constantly impressed by how much work you get done without even a set of Max Jax.

Without question the best one-handed mechanic in the world.

Long ago when working at a dealer, never failed tanks all full and bad pumps, all warranty. Drain the tank, no extea booked hours, and every custumer blamed us for stolen fuel. Ohh what fun.

On critical parts, if the OEM is in perfect condition after 15 years, I keep them. Just because they throw in some segments of hose doesn't mean they arent chinesium. Good call on the fuel pump. Every symptom pointed to a fuel pump from the start. I had this exact scenario with a GMC van 20 years ago. I paid a local shop to diagnose the cause of these same symptoms and ended up paying for a spark plug wire and was returned a lazy vehicle that got great mileage. It was a pre-OBD II vehicle. After a while it got so hard to start I pulled a fuel line and nothing came out. Pumped out 30 gallons of fuel because at the end it would only run when near full. $20 fuel pump make it like new. I'm a much better mechanic now I have KZfaq and time to think. I no longer send things out for repair. Thanks for all you do for DIY and also for shops willing to listen.

Fantastic master class in lean condition caused by low fuel pressure. Great diag followup on the new fuel pump. Learned alot. Thanks.

Quite a bit over my head but I love the way you isolate each step in your thinking and follow with a test to confirm. You never really chased the rabbit down the hole. You just used experience and the proper tools to read this problem like using a GPS to plot a trip. Very cool! You know your stuff. I am running into the same issue but have not even begun to drill down. Starting with spark plugs & fuel filter.

Nice pleasing result and the Denso pump kit made it easy & confidence inspiring. Right choice of replacement parts is almost as skilled as diagnostics, you really need know who makes/packages what and keep up with constant supply source changes of aftermarket have half a chance of buying wisely . OEM parts on the important stuff pretty much always pays off . If only Toyota had made a full access panel under the seat .Dropping the tank for a pump was pretty stupid engineering design choice ...

Since the car has a history of evap related codes it might be a good idea to smoke test the tank while it's on the ground. One of the rubber gaskets or a steel evap line on top could have a leak you wouldn't be able to see with the tank installed.

pretty impressive that toyo fuel pumps run until they wear out. it never left him stranded..

Nice comfirmation diagnostics before doing all the work to remove the fuel tank.Using the scope before and after was a good demonstartion for the video.Should be good now until the salt eats the truck out of existance.

That low idle at the end was from losing the idle memory from disconnecting the battery. Happens to mine almost to the point of stalling for a few trips. One day I'll get around to cleaning the throttle........

I went through this with my 2009 Scion xB (2AZ I4) Hard starting, vapor locking, long crank I sent the injectors out for cleaning and flow testing, they were badly restricted (they cleaned up) I had an exhaust leak at the donut gasket, throwing off fuel trims (I repaired) Then, finally, at 285k miles, the (in hindsight weak) factory fuel pump bit the dust Replacing the pump breathed new life into the old 📦 Some repairs are one step forward, two steps back

Great job! I'll bet you are the only man in America with scope recordings of fuel pump current draw and RPM! That's what I call " loving your work and going well beyond expectations"!

Older 4runners from the 80"s used to have the access cover to service the fuel pump. I guess was to easy😂

Great job explaining how to positively ID a weak fuel pump. I’m surprised it lasted a year without failing. Also surprised all those parts would be replaced without once testing fuel pressure. I’ve been around since before OBD 1 & 2 so that was pretty routine to test FP pressure first. And a Schrader valve would have been nice rather than assuming T’Yota pumps don’t fail 😳 I applaud you for working in that kind of weather. If we had that much snow we would have been cleaning floors and tools at our shop cause no one would drive in that mess. Heck I won’t drive in it anymore either. 🥶🥶 Del in Ky

I loved it when you asked why an engineer couldn't have made that access cover bigger so you could remove the fuel pump WITHOUT dropping the tank. Since this vehicle is an older model and OEM parts might be in short supply, I was fully expecting a Russian repair. I will take it. GREAT VIDEO!

What the heck is a tay-ota? Great stuff, always learn something new.

Love how you go thru all possibilities and arrive at the problem, and not give up. Wish you would wear the seat belt, how come no light the dash, does the wife let you drive beltless, great vids Ivan

Great job Ivan! I had a 97 civic that was my personal car. Only occasionally would set a lean code. Started fine, good power. Ran my tests with my pico and was all good. I did replace the fuel filter approximately 3000 miles prior to this issue. The filter was a high end filter. After replacing the filter again my lean fuel trims were back to normal. Sometimes you get crappy parts from name brands.

Hey that was great timing, just watched part 1 and part 2 arrived within a few minutes 😀

Ivan, JDM NY sells 45-60k mile 5VZ-FE direct from Japan for $450 (+ some shipping). Complete Engines with all ancillary components. Sometimes w/Alternator too. I’ve installed several Subaru EJ20’s from JDM. Excellent source for low mileage Engines!

Awesome! My used car I purchased had the "hot soak" issue and was running lean. It would misfire after sitting 15-20 min. also misfire after driving about 10 miles. It would sometimes throw a code for misfire cylinder 5. Cylinder 5 was the last cylinder on the fuel rail. The problem was someone changed just the fuel pump not the assembly. They failed to properly connect the pump to the fuel line in the tank. It was losing fuel pressure and would also get air bubbles in the fuel line. After replacing the fuel assembly my car ran fantastic! 2004 Lincoln Town Car with 101,000 miles Florida car. No rust! lol

Thorough and complete diagnostic based on working knowledge of the system operation. Is the key. Great job my friend.

I just noticed 200k subs! Congrats man 🎉

Its amazing how computer was able to run the motor 😮..great diag based on correct theory.i was totaly in leaking injectors😊..cheers ivan 👍🏿

Денсо хорошие запчасти. По факту поставщик запчастей на конвеер Тойоты и так же является дочерней компанией созданной Тойотой.

Great diag and use of the Pico for accurate comparison. Thanks Ivan.

As always excellent job of Diag, I would have replaced the hose and clamps on the fuel pump.

Nice job, current ramps will usually tell you all you need to know about the fuel pumps condition, in this case current was low because the pump was either leaking internally or could not reach the RPM required for good fuel pressure. I usually would do current ramps on fuel pumps with intermittent no starts, you can usually see the current drop out when it hits the bad segment(s) of the pump.

Great Job Ivan, you are top notch buddy, I always enjoy your thoroughness !!

new vehicles also not always ends up error codes. Timing belt jumped over on my diesel common rail pump and fell off on sync = crank, no start :) Despite of this there was no error code in the vehicle computer ... issue is well known once the water pump start leaking the coolant will eat up the belt slowly. Luckily a new water pump and new timing set solved the issue without catastrophic diesel engine damage when the valves are colliding with the piston...

Happy new year IVAN....You are the BEST...

Another great video showing the proper diagnostic process, as well as the value of the scope in diagnosing the problem and proving the solution.... I will be taking a long trip in my European car (177K miles) this summer and will use the pico method to verify the operation of my ruel pump. The good news is that I don't have to drop the tank to replace it, just make sure that I have a low fuel level. Thanks...

Nice preop test before going into surgery! Postop service might include cleaning the Iac, throttle body,...

great use of your problem solving skills and the use of the pico for confirmation put a big hole in the floor oem people

Very well done Ivan. I'm impressed that you performed all the test/verification instead of just throwing a new pump at the problem. This is performance repair at its best. No guessing, no hoping, no trial and error just logical proof testing and repair.

Toyota usually does have access ports to replace the fuel pump. Those were always my favorite to replace because I didn't have to drop the tank.

Fantastic work. Thanks Ivan.

Happy Toyota, Happy customer. Nice work Ivan.👍👍🇺🇸

Hi from Australia. I have 5vzfe Prado so this video was great. Toyota shipped Prados with OBD1, so very little data and I've not seen a scanner that can read them. However seeing your diagnostic in action was very instructive.

I would say you fixed it Ivan! Saw that smirk grin on your face, you knew you fixed it:)

Nicely done Ivan!

Hi Ivan, same exact issue on my Camry 11. I was between fuel pump and injectors. I took a leap of faith 😂since a snowstorm was arriving on the same night and don’t have a garage, so I replaced fuel pump and that was the issue. Interesting enough as your previous diagnose, I could run the car(poorly) but I could, and long fuel trim was around 35%, long startup after hot! Well can’t really complain when this issue happened car was already at 300k . Keep up the great work and videos! 👍

Ivan that was a GREAT diag and repair job! Logical thinking always wins .

After more than 40 years of working on aircraft, cars and motorcycles i still fail to understand the minds of engineers. For such highly educated individuals they can be incredibly stupid in the common sense department. Who in their right mind would design an access panel large enough to connect and disconnect the wiring and not make it large enough to access and change the pump? I can tell you many many horror stories where aircraft designs are concerned. Absolutely ridiculous.

great video. i can't understand why the tech couldn't find the problem with a pressure gauge

Nailed the problem spot on.

I know that in my 5.7 litre Chevrolet LS1 V8 powered Holden VY SS Commodore that I was worried that the Long term fuel trims were sitting at about 21% & the engine almost didn't start the morning that I took it to the mechanic to get the annual pink slip registration inspection done on December 20 last year because in the past a bad fuel pressure regulator has caused the high fuel trims plus a check engine symbol to turn on the LCD part of the instrument cluster. I was getting at least a P0171 and sometimes a P0174 lean code. This time the fuel trims went back down to the single digits when I did the 40,000 kilometre or 24,000 mile fuel filter change,I blew it out & it was full of dirt. The fuel economy display has also been showing a higher than normal fuel consumption readout as well but it the fuel trims are back to normal then I'm not worried. It uses the SAE J1850 VPW pre CAN GM OBD2 protocol as well,not the ISO15765 CAN OBD2 protocol which the 6 litre L76 V8 engines were ran by in the series 2 VZ SS Commodore in 2006 !

Measuring the rpm of the motor was a cool deal. 4-5 amps sounded better than 1 but the rpm doubled at 5 amps!! Great job again.

Pretty common for poor fuel pressure on something this old n milage etc Most DIY people don’t think to measure pressure and flow! Checking fuel volume to spec us also a wise check to do

My '02 Honda Odyssey has an access door under the middle seats. Sure made it a lot easier to change.

First couple of times watching a PHAD video I thought it was perhaps too slow, as you explained every step and showed why this was tested and when. Now I understand your love of teaching people about diagnostics and the importance of not skipping small steps and checks to avoid incorrect conclusions. The most frustrating thing about your videos is the failure of automobile manufacturers to make small changes that would vastly improve access to parts of diagnosis of faults. I understand that it saves a few cents, and that adds up, but having a auto that’s built to easily diagnosis and repair will potentially get you a reputation like Toyota built up over time and increase the price you can ask for your vehicles.

Remember when fuel pumps were outside the tank? Good ol days.

Proper diagnosis beats the "parts canon" every day, all day. Great 2-part Ivan. It amazes me that the computer had that much leniency for fuel trims and injector pulse width.

Ivan maybe you could have improvised and cut a larger hole from the top to access the fuel pump :)

Nice work. Good for another 170k!

13:44 low idle on a Toyota of that vintage? It needs the throttle body cleaned - you just forced a re-learn by leaving the battery unplugged, so I bet it's "forgotten" all the learned compensations for the throttle being dirty AF. My 2005 Camry is the same way so I clean the the throttle every 30k miles now, only takes a few minutes. Probably only really need to do it every 100k but it's easy. Still, at 176k, this Toyota DEFINITELY needs it.

The customers all got their money's worth from the old pump. Good one Ivan!

If you don't happen to have a Pico handy you can just use Hz x 60 to find RPM......

I had low pressure from the fuel pump on a Firebird, turns out that the small hose connecting the fuel pump had a small hole in it. I always replace this small hose.

Im spoiled..i was hoping for bonus footage. I was hoping you would have taken the old pump to the bench and discussed some electric motor theory, even for a minute Edit: im left wondering why rpm frequency of the pump motor is measured over 8 cycles of the graph?

good fix, but I am suprised when you disconnected the battery you did not clean the terminals before reconnecting

Re: idle in gear. You could check if there’s a park/neutral switch input to the ECM that’s used for idle compensation in gear. Maybe the IAC valve is worn in that one spot too.

Great diagnosis. Those battery posts/cables should be cleaned. Lots of corrosion. Thanks Ivan.

24 years old and still kicking

Masterfully done!!! masterfully and accurate repair,, gotta think like an Toyota engineer!!! Great job Ivan

You should replace the fuel filter because it will be full of the brush and armature material

Nice job going back for those final two tests to be 110%. Thanks Ivan!

APC anti parts cannon. Great diagnosis

Deja Vu .. I put a new Denso pump in my ‘02 Odyssey .. yep, the RPM should be somewhere between 6000 and 7000. I tore down the old, 18 year old/180K miles pump, and found the commutator was extremely worn out.

The low amp probes smaller jaws provides a more accurate amp reading of 2.5 amps before pump replacement compared to the 1 to .5 amp reading with bigger jaws the the other amp probe

The vehicle was purchased for a student (young person ) they will probably wreck (crash) it now that it has extra power 🤣Cheers Ivan.

Those Denso pumps cause problems on motorcycles, too. Looks like pretty much the same unit. Something in the armature takes a dump, you can hear them running slow.

Your amazing, right on all the time!

Don’t throw parts at it. The first symptom was a lack of power like it was starved for fuel. Thanks Ivan!!

I noticed when you replaced the fuel pump you did not change the black tube from the pump to the pick up tube. I had a fuel pump replacement when the rubber hose had a crack in it and had to redo it because I missed that. You should always replace that no matter what. But if you did replace it and I missed you doing it ok. That was the original problem I had but I changed the pump anyway.

Love all the videos but I wish along with the year and make of vehicles you should also mention the mileage.

Volumetric fuel flow rate useful as another confirmation

Be glad you’re not working on a mid to late 80’s FI Buick. No access ports, no nothing, and the tank fill and vent would go into the side so the tank would need to be drained to at least a 1/4 before removing. They were like pancakes.

If you ever unexpectantly run into a decent amount of chedder id love to see you build a heated outbuilding with a 10k lb lift... You deserve it...

They wanted make sure that the fuel tank would always have to be removed to change the fuel pump. I can see reasons why but at least they gave you an easy way to test it (the fuel pump) by giving you an access hole to the connector. That there's an access panel at all makes me think that they thought about it and it might have been deliberate.

I would clean the throttle body and the idle air control or replace the idle air control i notice the idle doesn't flare up when started.

Nice Diagnostics

someone get this man a car lift

Surprised you didn't mention the fuel filter in the first video (the big in-line one under the driver's seat floor). Could be clogged.

Ivan, I very much enjoy your videos. You are quite thorough. However I can't believe you didn't clean the crap off of the battery posts and terminals before hooking it back up. Dude.

With all these issues with fuel pumps, I wonder why there isn't a PID for fuel pressure.

Thanks for another good video!

I was wondering where you're first Auto repair Job was ? Mine was at a Sears Auto Center !

Привет Иван! Выбраковку насоса провожу по производительности подачи бензина за 30 секунд, в измерительную ёмкость. А дальше потребляемый ток и обороты. В своём автомобиле я пропилил аккуратное отверстие для доступа к бензонасосу.

Great analysis. Learning all sorts of great procedures!! Thank you!