Lexus Random STALL...After Engine Swap? (RX350 V6)

In general, Toyota and Lexus vehicles are very reliable...
However, this 2007 RX350 V6 is on its second engine at 190k miles.
It got towed to a local shop because it randomly STALLED out on the owner.
They said the EFI fuse keeps blowing, and the FUEL PUMP RESISTOR gets red-hot...
They replaced the fuel pump, but obviously that did not resolve the problem.
Here we go...place your bets now. What is going on with this CRAZY Lexus??
IVAN'S PICO WAVEFORMS:
drive.google.com/drive/folder...
KINGBOLEN K10 (Updated THINKTOOL PROS) **ONLY $940 with COUPON!!**
www.amazon.com/dp/B0BW8B4D9Y?...
ASTRO AMP CLAMP:
www.amazon.com/dp/B08MTCMWLB?...
Enjoy!
Ivan

[@larrywalker7759]

I love the "Negative parts required" (indicating remove stuff to fix the problem).

[@HouseCallAutoRepair]

Usually, this only happens with the removal of remote starters...

[@aarontayag473]

thats when you know Ivan's really sick!

[@pingpong9656]

That amp clamp trick to chase the short is genius - so simple and so effective - why did I not ever think of that! Well done Ivan!

[@dans_Learning_Curve]

YEP, new one for me too!! So simple!

[@tallerdechepe5303]

It's also new to me... And I will put it into practice when I have a similar case to measure the amperage level that a fuel pump should have when I suspect that something is wrong

[@CoolerQ]

Keep in mind it measures the total current flowing in the clamp, so if the current is going out and coming back on separate wires in the same harness it won't show anything on the clamp. Fortunately, cars usually don't have ground wires in harnesses, but if the short is more complicated you never know.

[@pingpong9656]

@@CoolerQ That's why the connector was disconnected. If somehow you got multiple shorts to confuse matters, you could still test wire by wire at points along the harness.

[@dans_Learning_Curve]

@@CoolerQ good point 👉! I was attempting to think if there would be some conditions where it wouldn't work. 🤔

[@thk7513]

Nice use of the amp clamp. At 73 and I am still learning, hmmmmmmmmold dog, new tricks!

[@agostinodibella9939]

So Ivan, in SHORT, someone SCREWED this car up! Nice fix!

[@PineHollowAutoDiagnostics]

Good one LOL!

[@petepeabody8905]

This car got "screwed"

[@GarnConstructionInc]

Brilliant way to split the circuit! Thinking outside of the box to discover a fiddlers fumble. -PR as stated for the win.

[@Garth2011]

That was a good trace down Ivan. Interesting to know the amp clamp can be used to determine direction of the short. LOVE the "test lights". I should head over to a local salvage yard and get some tail light harnesses from the incandescent bulb type vehicles they have.

[@brianw8963]

More than likely whoever did the engine swap removed that liner for access, and probably put the self tapper in. If that was the case, He should have the honor of paying the PHAD fee. Nice work Ivan. 👍👍🇺🇸

[@scientist100]

Given that the tech did not remove the factory bolt makes me think that he just just ripped the splash shield away when doing the removal because time is money. I cannot trust shops in doing good work.

[@ehsnils]

@@scientist100 It could have been rusted in place. But the liner was damaged too, so a new bolt wouldn't have held it in place.

[@PineHollowAutoDiagnostics]

@@ehsnils Actually I reused the original factory bolt that they left in there...held up the shield just fine lol

[@ehsnils]

@@PineHollowAutoDiagnostics OK, I couldn't see the original and it did look like there was some damage to the shroud and I assumed a broken bolt there. Assumption is the mother of all Failures.

[@michaelslee4336]

@@ehsnils Even if the hole is ripped clean through mudguard washers are your friend for a larger clamp area.

[@ootyguy9805]

Exceptional diagnosis. With Ivan's video, I always hit the like button first before watching because I know it will be interesting and I will be learning something! Great job Ivan as usual!!!

[@pingpong9656]

Literally the ONLY channel I do that for too - I appreciate humble talented people.

[@JohnSmith-wb6kq]

Yeah I do too, wish everyone who watches would hit the like button, would help the channels algo's

[@PineHollowAutoDiagnostics]

I appreciate the support! :)

[@keysautorepair6038]

Classic example of my buddy has a friend who is a mechanic and he only charges a 6 pack.

[@zx8401ztv]

Well done ivan :-D I was thinking the resistor block was internally shorting to the case with heat changes. I really didn't expect a screw, dam crappy people!!.

[@dans_Learning_Curve]

Your experience is showing! Congratulations on the growth of your channel!! I don't think I've ever heard you ask for people to subscribe.

[@_RiseAgainst]

Cause he's not a sellout!

[@PineHollowAutoDiagnostics]

I figure people watching these vids are smart enough to find the "Subscribe" button on their own LOL!

[@billsmith2212]

Great logical process and fix . Some people use a cable tracker to locate the short in the wire . I think Power Probe has a similar device . A compass will also show the direction of the current flow . But you already have an amp clamp , why bother with other tools . This is the first time I have seen the amp clamp used for this . The current has a magnetic field in the wire .

[@topher8634]

Another victim of the self-drilling screw. I've had to repair countless wires in breaker panels and various electrical enclosures and repair leaks in sealed refrigerant systems because of previous techs zipping in a "self tapper".

[@markket1154]

Good repair, you're worth your weight in gold to these shop owners.

[@randallgoldapp9510]

I've seen this at work. Automation engineering mounted something to a machine on the outside of the cabinet and screwed one of these screws into the wiring harness on the inside of the machine.

[@Jazc-mp889]

The person installing that bolt obviously was not thinking.

[@stevenlane729]

The addition of the amp clamp was pure genius (it did take me moment to understand why it worked). Great diagnosis.

[@greggc8088]

Good fix! A lot of folks would not have looked for the point of short and just ran an overlay and then a little later down the road had another wire damaged by that sharp screw.

[@mikechiodetti4482]

THAT was a tricky one! I like the way you use the amp meter to "see" the problem. The lights work great also. Very good one Ivan!

[@jeremyah78]

Your process is gold, Ivan!

[@RobertCiampa9112]

I can only imagine what these shops are charging the Customer, "Yeah you had a bad fuel pump and a short circuit etc............. That will be $$$$$"

[@billziegmond4943]

Great diagnostic method my friend. I worry about myself at times. I find it very satisfying chasing electrical problems. Like you the victory lap is always the best part. LOL

[@vpimike2646]

Great instructional video, Ivan. Easy for the beginners to understand.

[@haroldhawkins9370]

Nice job Ivan, you're good at fixing what others can't.

[@glenharper3136]

Thanks for the video Ivan.

[@rrmech11]

Ivan Love your breaking down on all the circuits.

[@HamJamming]

Very nice work, Ivan!

[@frankcarpenetti5776]

Great job Ivan! Once again! Keep doing what you do!

[@barryhipp3935]

Excellent video, I have learned tons from you. Don’t ever quit making them. Good job!

[@davidgrisco1939]

Yep, follow the process. Well done Ivan!

[@cyrexccc]

Great job Ivan! Good to go!! Loved it!

[@crasher88]

great video Ivan loved the tip about using the inductive amp clamp in conjunction with the test lights. Will defiantly have to put that tip away in my arsenal for a later date.

[@paulstandaert5709]

It is disturbing how people drive fasteners into something like that without even a thought of what might be on the other side.

[@jamiepatterson1214]

It's interesting how some never think but in one direction and still don't fix the problem. It's always necessary to break multiple branches in order to determine which branch horbors the problem. That's what makes watching your videos a pleasure, Ivan. You know it's necessary to break branch connections to isolate the branch containing the problem. This process can be applied to several fields. Unfortunately, too many in these fields are nothing more than parts cannon people. They either haven't learned to isolate the trouble, refuse to learn, or aren't given the time to apply the process. If they refuse to learn or aren't given the necessary time, then either the customer suffers or someone else has to work on the problem. Keep up the excellent work, Ivan.

[@GeminiSeven43]

AWESOME!!! Once again you are a RockStar and through patience and basic logic you narrowed it down relatively quickly without the parts cannon. Too bad they didn't call you in before the fuel pump swap. Thanks so much for taking us along Ivan.

[@HouseCallAutoRepair]

So much to learn on this channel!

[@freddysoto7651]

Excelent as always!!

[@TheRealJerseyJoe]

Great diag... nicely done Ivan !

[@jerryking2418]

As usual, brilliant diagnostic.

[@robbflynn4325]

Absolute genius, you never cease to amaze me!

[@sixertogo]

well done Ivan, i'm sure that was harder than you made it look

[@jeremybaker3993]

Great job Ivan your a electrical genius

[@stormyyoung6344]

Good video as allways I learned something again thanks for sharing

[@peterlworth]

Love the video. The only problem is that it seems like more shops are reaching out to you for there diags the whole industry needs to step up to your level. Thank you. Keep up the great videos.

[@abderrahimmark]

Two short to ground video in a row 👏🏻🥰 And I learnt a new technique. спаси́бо

[@thangnguyen590.55]

nice explaination Ivan

[@aranhaydar9195]

This was really fun! thanks for bringing us with you on your diag. one of those Brown Toyota relays got me confused too when i was diagnosing a corolla 🙄

[@donkaiser6704]

Great technique for non-invasively finding a short to ground. Thanks!

[@victorgonza4528]

Very good video Ivan, those boys when engine swap damaged the harness

[@ws2664]

Now that was a good one, and I'm not even going to bust your chops about" no parts required" even though you didn't need to put parts in it, I really liked your trick with the amp clamp, you have to do more videos using the amp clamp like that. Nice one!

[@ChrisWilliams-pu8pj]

Great job Ivan. I really appreciate your insight on using the Amp Clamp to determine location of short. I have that one filed away. Thank you!

[@dicktomasko1553]

Great job as usual Ivan...Snowing here in VT and I'm under a hood GRRRR

[@Charlie1012000]

A satisfying result again. And i learned a new trick today with the amp clamp.

[@tallerdechepe5303]

Excellent work... Greetings from Venezuela. I like watching your videos and seeing how you solve automotive problems

[@porky7753]

Great job Ivan

[@tedjohnson64]

Very impressed with your confidence… at finding the short even when it wasn’t showing up… in your under the hood wiggle tests!

[@kiln2100]

Excellent video Ivan

[@abdul-kabiralegbe5660]

Whoever put that other fastener there could have taken the old one out, and reused it with a washer to strengthen the rip in the splash guard. Unless the old one was rusted in place and they didn't want to go to the trouble of removing it. The truth is that most times, these fast and dirty fixes don't cause issues (that can readily be traced to them anyway), so people become complacent and use these methods all the time. More often than not, if something comes from the factory a certain way, there's a good chance it's for a solid reason.

[@timmehlittleloud2251]

Brilliant use of the amp clamp. So obvious now I've seen it. Quality m8. Hopefully save me some time in the future 👍

[@MrJoey1570]

I have a friend who works at body shop the owner refuses to purchase plastic push rivets so he scarfs them from totaled cars and he is forced to use random nuts bolts and self tappers

[@robertheim352]

Good progression to the flaw! I am very disheartened by sloppy workmanship and inconsiderate installers. I just had a trailer hitch installed by a dealership: the installer left one support bolt loose and the wiring harness interfering with the spare tire. I can even acquire the name of the person who installed it.

[@dongningprc]

Love it, Ivan. You are the best technician on KZbin, I think. Don't know if we can ever have one around here in Toronto closely as good as you are

[@dustcommander100]

That was a cool diagnosis! I'd never seen a fuel pump circuit with a resistor in it like that, and wonder if pressure measurement by the ECM switches the resistor in and out, as well as how many models had this feature. Great going, as always!

[@neverstoplearning382]

Amazing Ivan.

[@stevelang3171]

very interesting and clever. who'd'a thunk it? i especially liked your using the amp clamp down the cable nice diag Ivan!

[@leroycaudill96]

Good job Ivan.

[@jamesgeddes797]

Masterful diagnosis! Sometime, a great episode would be an explanation of your test leads and banana plug adapters. How you put them together, what you use, and how you use them. Cheers mate!

[@Dansk55]

Excellent work as always. Learning more and more. Now the real question, why did this 2GR even need an engine swap?

[@lorrainebwoy]

I love these In the field videos

[@mlctrez]

This is definitely Hanlon's Razor at work - "never attribute to malice that which can be adequately explained by neglect, ignorance, or incompetence"

[@jgeorges3061]

IVAN, AWESOME/GREAT enjoyed this one a lot ur so good in diagnosing brother i can not have enough fun learning and watching ur videos and approach thanks for sharing as always.

[@zippo4059]

"Negative parts required" 😁 ... Fantastic as usual

[@rodneymiddleton9624]

Self inflicted from previous work. That's why I can't stress enough to people that the factory designed it the way it is for a reason. This is a great diagnosis Ivan. Thanks!

[@markmalikowski4971]

Another excellent video Ivan! Whoever put that fastener in never thought of the consequences of where it might pierce through the fender. Well done sir.

[@randy1ization]

this is why they use plastic fastners or dedicated bolt holes.

[@OzFrog48Z]

Whew, what a relief! For a short time there a few minutes into the video I thought Dorman might be making replacement fuel pumps.

[@Max_Thunder]

Nice work!

[@lbproductions3613]

Diagnostics masterpiece!

[@HotRod-wv4vm]

Thanks Ivan

[@baxrok2.]

Unreal diagnosis. -NPR to boot. lol Thanks Ivan!

[@greghanlon2235]

Ivan... good diag, find and fix.

[@johnnyt1408]

Another awesome job

[@themalewhale59]

Very satisfying diagnosis. Stick to the plan - the facts don't lie. 😊

[@trojanorse]

Good find.

[@terrygillam2700]

Ivan you and Eric O,Keith Fazio,Raymond Rainy and the best,plus others who do DYI videos are the best

[@GreyRockOne]

Nice work Ivan! Always correcting someone's screwups.. no pun.. Did you ever think of a small, and not to obnoxious buzzer or tone device in conjunction with the test lights while hunting for a short to ground? It would have worked in this instance.

[@tomctutor]

I used to work in a communications co, installing and testing comms cable install in large buildings, Without a buzzer could never have traced those cables through many conduits and jbx's. 👍

[@PineHollowAutoDiagnostics]

I HATE beepers and buzzers of all sorts haha

[@pingpong9656]

@@PineHollowAutoDiagnostics Same - those things trigger randomly on ghost voltages - I think RF signals cross talk on other wires and they send you off on a wild goose chases... This current clamp is rock solid.

[@randy1ization]

strong work!!!

[@Parknest]

This reminds of when I had a massive short to ground on my 1991 Toyota Celica. It was blowing the main 100A fuse and I'd lost most of my electrics. I methodically went through the OEM wiring diagam and then I noticed that there was a stray wire (what was left of the capacitor which supresses audio interference) that was shorting to the alternator body. Once that wire was removed the short was gone so my repair was also a negative parts required repair.

[@fredautos]

I never knew 1:32 that Resistor Was for fuel pump speed!... But well we learn new things everyday..shorts are somewhat Hard to find tho.. But is always what comés last Victory Not Defeats!!. Ivan!...

[@topher8634]

I always assumed it was for the ignition system.

[@fredautos]

@@topher8634 now we know!

[@hokie9910]

Those 3.5 Toyota engines are phenomenal, very strong and really the only issue is that rubber cooler line, spend the 175 bucks and replace that and you should have an engine that lasts a very long life.

[@PineHollowAutoDiagnostics]

Indeed. Some people still ignore the warnings before it's too late :(

[@hokie9910]

@@PineHollowAutoDiagnostics My understanding is that there are really no warnings…? It just ruptures of old age and heat cycles? Ivan, have you seen signs before they rupture?

[@PineHollowAutoDiagnostics]

@@hokie9910 Usually almost no warning. I meant I've told owners to change the rubber hose, but they ignored me and still blew their engine LOL

[@hokie9910]

@@PineHollowAutoDiagnostics oh gotcha. Unbelievable, a couple hundred dollar repair leads to a 5-8k engine

[@ablackformula]

Super interesting! The resistor block was getting to 400 degrees and super hot, because it was supplying the ground all the current it could when the fuel pump was being commanded on. The current was going the opposite direction from the intended path.

[@notsureigaf]

There should be a section in chapter 1 of the Mechanic 101 textbook explaining why you don't drive screws into places that might have anything remotely important behind them. At least it wasn't a fuel line ⚰

[@additudeobx]

An innocent sheet metal screw in a fender liner.... Love watching!!!!

[@timgroleau1612]

The buzzer is super handy when your head is down in the engine compartment, by the fuel pump or under the car etc. Almost no $.

[@jimharmon3404]

An excellent job Ivan! I suggest you should have used only one part, an oversized fender washer! LOL. So that is what they are for!

[@apollomorelos727]

Another fine job.

[@williamwhite9767]

Another great diag!👍

[@JRS-iq9pz]

That was a good one. Good job.

[@keltecshooter]

Im definitely stealing the amp clamp idea , smart

[@tomlombardo85]

ALWAYS love your videos Ivan, you are the "Sherlock Holmes" of auto mechanics !

[@PineHollowAutoDiagnostics]

This was a fun one for sure 😁