Diagnosing a 2018 Chrysler 300 with a Hard Start and a P0339 fault code

[@PineHollowAutoDiagnostics]

Question of the day: how in the world did that reluctor tooth get bent??? Love the scope captures. 4 channels is never enough!!

[@richardcranium5839]

said every russian on the planet! lol actally one channel strategically placed would have been enough. but yeah scope envy is real

[@petar443]

Ivan, did you ever consider buying the escope 8 channel ? This will be awesome.

[@djosbun]

I originally thought that the top of the tooth somehow broke off. I would love to see what's laying in the bottom of that oil pan.

[@ganeshnarayan5505]

Hey Ivan may it brushed his teeth so hard that it bent his tooth.

[@thetinpin]

Very creative sabotage? That is, without question, the question.

[@FinalStopMobileAutoTech]

I get all fired up when I get a notification from ATS. Keep em comin Bernie!!

[@kennedysgarage3281]

Me too 😂😂😂

[@themechanic6117]

the original sensor was stuck in the bore , someone knocked a chunk of the sensor into the engine to remove it and ended up hitting that tooth.great video as always

[@SuperMarioDiagnostics]

So many awesome things about this video. The Spanish party music in the background. Bernie finally taking a step back and saying something like "that's so cool." Catching a man made error from the driver's seat. Good times! 👍👍 Thanks for sharing!

[@lovetolearn5253]

the best part for me is seeing the fault on scope then seeing it out right exactly as it showed. That's the power of a scope seeing what you can't see

[@billsmith2212]

Another great diagnosis . Pretty soon , Bernie will have more channels than cable TV !

[@IamReadyToRock]

Excellent diagnostic, un saludo desde Peru. By the way, the name of the song is "Mi Historia entre tus dedos" by Gianluca

[@rp5029]

Add one Mr Bernie Thompson to your bay and you too can have excellent troubleshooting in that bay!

[@bobneuman8124]

If these videos were on a vhs tape, the tape would be worn out by now, lol. Really enjoy learning from them, keep them coming !

[@duanedonaldson2262]

Awesome find Bernie but this type of problem is somewhat common. This is a pull-down system, when the wide-tooth piece of metal passes the CKP sensor, the signal is pulled low. This is where we see the wide gap, low voltage, in the CKP waveform. The voltage goes high with the air gap in front of the sensor, then when the tooth arrives in front of the sensor, the voltage goes low, repeating when the air gap arrives in front of the sensor, the voltage goes high again. When we see the voltage stay high, we assume an air gap, in this case, a tooth that is too far of a distance to be picked up by the sensor, if the voltage was to stay low more than expected we could assume metal to metal short circuit by another piece of metal or a collection of metal chunks or filings between 2 good teeth. The bent metal of different types of vehicle systems is a common problem due to poor maintenance practices such as prybars or misuse of tools in the wrong area, such as what happened here. An engine may start but won't rev up due to a 24x wheel partially bent on the back of a GM harmonic balancer (HB) thanks to a prybar being used to remove the HB.

[@euroauto61]

Always look forward to the next video from ATS these are priceless THANK YOU BERNIE!!!!

[@Iweldz]

I knew I heard mexican music towards the end. Us mexicans are always blasting music at work lol. However Great video. I enjoy every one of your detailed explanations. Aside from the fact that I don't own a scope its still fun to watch and learn for us diys.

[@robertmobileman8304]

Great diagnosis Bernie , well explained as always , thanks for your time Rob Mobileman

[@PaulysAuto]

Excellent video and case study. I am curious to know just how that tone wheel was bent to begin with? I wonder if maybe the engine had work done and somehow it was pryed on or jacked up on during some kind of deep engine work recently 🤔 Pretty crazy to see that!

[@jarmohuhtamella9647]

What is that tester what you use?

[@jesseruiz2337]

I dont understand how you do not have more subscribers. Thanks for the great content.

[@kennethd7048]

Hey there Mr Thompson.. I'm not a tech or anything. I stumbled upon your youtube channel because of the Volvo xc70 with the bad fuel pressure sensor. I subscribed because of what you do and how you go about it with the ocilliscope.. fascinating... I remember seeing the old ones from the 80's G B U!

[@hightttech]

Very nice, BT. Besides a visual inspection, i cannot think of a way to troubleshoot this WITHOUT A SCOPE. I'm thinking the CKP code plus 2 sensors should trigger the tech to eyeball all components, but that bent tooth is very subtle. Great case study to promote use of scopes 👍.

[@mikechiodetti4482]

Hopefully that trigger wheel can be streightened out to eliminate the problem. It would be great to see the "after" repair with the scope. Thank you Bernie.

[@ritchierich66]

Great diagnostics procedure, and awesome scope capture.

[@josehernandez4407]

You are the only one thank you for you teachings..

[@peterthompson3549]

Awesome presentation Berni I have learnt so much from watching your videos Cheers

[@toddw.9845]

Great Diagnosis Bernie!

[@scientist100]

Are we going to ignore the fact that a romantic Spanish song is playing in the background? It is one of the classiest too 😅

[@SuperMarioDiagnostics]

It was a cover too 😆 makes me want to find the original LOL

[@IamReadyToRock]

@@SuperMarioDiagnostics The name of the song is "Mi historia entre tus dedos" by Gianluca, saludos, desde Peru.

[@SuperMarioDiagnostics]

@@IamReadyToRock 🙏

[@arthurfricchione8119]

Excellent video Bernie and well presented and explained. Thanks for sharing. I always hit like before even watching the video. Just know I’ll learn something good. 😊

[@sinegra30]

Thank you Bernie! You are amazing! Please keep it coming!

[@christleydacosta4747]

I like your scan tool. What's the name of your scan tool? And the scope tool?

[@samcripes3046]

Holy smokes! I have one at the shop waiting on the OK! 4 tooth past sink notch spikes up above normal 5.4 ford. Crank sensor already replaced. Told we need to remove and pay attention to the 4 index! FYI the cam crank is the same for 6 and v8 2 valve.

[@OnlineMechanicTips]

Good stuff B

[@alexlongpre4527]

How ci it tried to fire the injection at first, but not the ignition though. Both systems use the same signal, no?

[@ganeshnarayan5505]

Great video Bernie have learned a lot from you. Thank you for that.

[@walterkopf5590]

what is the model of that boroscope?

[@WissamAbbas]

great video as usual thanks

[@steveanderson4553]

Great Video Bernie !! Thank you

[@roxanneabbott8424]

Great job! What oscilloscope are u using???

[@Discretesignals]

One interesting part is the PCM set a circuit code, so you'd think it was a wiring, pcm, connection, or sensor problem. In actuality the PCM was expecting to see a signal change in a certain window of time, but it never saw the change.

[@mannyvelez4437]

Love the Spanish music on the background

[@stewartboucaud9919]

That was a awesome video. You are the best.

[@chrisland169]

somebody been there before ,trying to removed a old stuck crank sensor and probably you will find some part of it in the pan ,they knocked the old one in and touched the reluctor wheel with the tool used to do the job!

[@nikolatesla7490]

Why is a crank sensor on a 2018 car needed to be removed?

[@chrisland169]

@@nikolatesla7490 because those fail a lot on chrysler

[@Discretesignals]

Damn you beat me to it. I should kept scrolling down before replying above.

[@tgoodm1]

Love the video series!!!

[@gregjones8501]

Wow! Never seen a bent reluctor wheel in my shop yet but you can bet the day I do.... Thats gonna be a life changing moment for me!😬🤣🤣

[@TheAlex2769]

Bravo Bernie Bravo!!!!!!

[@baxrok2.]

"Wow, that's cool." I agree! Thanks ATS.

[@jesselyons2002]

He must have felt like a young man again

[@IAMNOSLEEP]

Thanks for sharing Bernie... Cheers.

[@kingsolomon4392]

this is amazing content!!! keep it up

[@proanswers]

great vid. There is no excuse for a billing mechanic NOT to have a bore/endo scope there very economical and part of the verification test process. Even if you didn't utilize the scope event driven test methodology of the crank sensor- at min a verification of the internal location of the tooth.

[@mohammedbierey]

I faced the issue last month. Nissan Navara, with CKP DTC,hard start and 5 CKPs have been replaced. It turned out the gear was bent

[@James-fs4rn]

👍 great tool and mechanic!

[@markferraro5250]

thanks so much Bernie

[@benb4688]

How did you know it was a bad crank pattern without a known good? The missing tooth was so close to the large tooth I would have thought maybe it could have been part of the design of that particular tone wheel if I had never seen a known good for that car. Granted most crank sensor signals I've seen only have the one missing tooth or large tooth. Doesn't mean they can't be built differently.

[@scientist100]

It is usually a square gap, other usually have like an ac wave but there is a unique ramp for each turn as well.

[@benb4688]

@@scientist100 I get that's the usual but what if the designer of the engine/software decided the pcm needs to see one large high gap followed by a large low gap to determine one full revolution?

[@simonparkinson1053]

Experience. The reference waveform will be in his head, he will have scoped so many of these engines over time. You would do exactly the same. "Hey, that doesn't look right!"

[@benb4688]

@@simonparkinson1053 If I knew what a good one looked like I would of but this was a 2018 I haven't had a reason to scope one yet not sure he did either cause that car is so new can't imagine many of them failing yey. I am not questioning the diagnosis it was spot on just trying to figure out how he got there so I can learn to. If I would of seen it in the middle of the pattern I would have said hey that ain't right but at the very end I didn't see a problem with it just thought it was a characteristic of that vehicle having never seen one, I would have thought maybe signal is good at the sensor but what about all the way to the pcm and spun my wheels chasing that before I circled back around to the sensor wave form again.

[@Lambros_Stefaneas]

@@benb4688 only the big gap is ok to make the synchronisation .doesn't need a low gap after the dig one.actually, is better, to have more teeth to read , so the pcm, can know more accurate,the position of the crankshaft. And the big gap, is never on any cylinder TDC,because of that, so the pcm have more teeth to read and do the calculations. (everything,cam ,crankshaft,etc, are synchronised before the 'big bang event's ' )

[@siskiyouwoodsman4279]

The five thumbs down votes are from people that sell crank sensors 🤣

[@rickcoleman8903]

First clicked on it right away great channel

[@terrancegrant1664]

Good work!

[@racheljames6021]

great two scope video bore scope and e scope

[@mike-yp1uk]

"Ride the wave" Go bernie

[@diesel66pe32]

When you say '' the shop said '' ! do actually mechanic shop call you to go fix the problem for them?

[@thetinpin]

When did Vincent Price start doing vehicle diagnostics? He looks great for his age!

[@mr.hammer7080]

Good video

[@kennethbode2017]

hope the tooth doesn't break off. very odd for it to get bent.

[@ventureelect]

I feel sorry for you guys for the positions you have to work in. hard on the back.

[@christleydacosta4747]

Oh wow bend tooth great job🙏🏽

[@juergenscholl2843]

Why would it flag a circuit code??

[@billyr9840]

PCM interpreted the missing tooth/signal as a loss of signal, ie ( circuit failure ).

[@juergenscholl2843]

@@billyr9840 There was no signal missing and the signal voltage stayed well within range...this doesn't jive with the definition of a circuit failure (maybe it was set with the sensor disconnected at one point and the switch open?).

[@billyr9840]

@@juergenscholl2843 I was thinking the pcm saw the signal low when it should of been high that it interpreted it as a momentary glitch ?

[@juergenscholl2843]

@@billyr9840 That would cause a performance code, not a circuit code....

[@SuperMarioDiagnostics]

@@juergenscholl2843 because... Chrysler.

[@phillipmurray5516]

Love it

[@Lambros_Stefaneas]

Bravo.

[@aymenmohamed1134]

Awesome

[@ismarmeskovic]

👍👍👍

[@christleydacosta4747]

Man 😊 your good

[@meking115]

Bernie T. !

[@richardcranium5839]

straighten that it will just eventually break.

[@JamesLee-oe7mt]

Maybe eventually the computer gives up on the crank sensor and runs from the cam sensors

[@robertfrancisco1193]

Chryslers engines with the pcm can re learn some things this is the proof.

[@simonsherwood7169]

Someone fitted wrong sensor

[@petehenderson]

Another junky ass dodge love the video

[@cejv5j91]

1:32 Besondere

[@1fnjoreinhofer940]

Time for that African American owner to take it out of that Mexican tire shop and bring it over to the Jewish Engine Orthodonist for a new 24 carat grill on the crank wheel :-))

[@ShainAndrews]

Ass hat.

[@corvette_rick]

As someone with a shop I like the video series except he’s using a software that pretty much nobody else has or ever heard of. It’s not snap on or autel or any other common tool. While the principals apply it makes it Impossible to follow along on some of these tests because of the tool and software he’s using.

[@jimr549]

It's definitely out of reach or justifiable for a backyard mechanic but it is available. Bernie has certainly become one with it.

[@corvette_rick]

@@jimr549 I wasn’t saying it’s not available. I’m saying up until His videos I had never heard of it. And the other places I’ve worked never used it either. Shops mainly stick to the big three. Mac, Matco and snap on. I’m not saying it’s better or worse just that it’s so different then what is the norm you can’t really follow along with your tool because it doesn’t have that feature.

[@DIYDaveOK]

The tool is definitely very different, but really all it does is change the way it reports data. Most scan tools just display a PID and it's value. Bernie's system effectively coverts the displays of numeric data, like fuel trims, DTC's, into a dynamic summary form. The dynamic switch of fuel trims from rich to lean via visual cue is a really smart way to represent that data. This is a scan tool with a great GUI design on top of it, and I'm guessing it was developed with the aid of a tech at the outset or by a tech with a good software development background. It is exceptionally expensive which definitely puts it out of reach of a backyard mech or small-budget garage .. but Bernie also does great videos and it's great to learn from such an expert!

[@corvette_rick]

@@DIYDaveOK he’s very knowledgeable there’s no doubt. One of the reasons I started following. My favorite is still probably scanner danner because of his personality. But they all provide some knowledge as we all know never ends in this field.

[@DIYDaveOK]

@@corvette_rick I watch ScannerDanner, too, and he's good, but my absolute favorite is Eric O at South Main Auto. He brings an amazing balance of humor, intelligence, humanity, and experience to the work of vehicle diagnosis and repair. I have learned so much from him, Ivan at Pine Hollow Auto Diagnostics, PJ at Voltage Drop Diagnostics, and even "Eric the Car Guy." I love to learn and all these guys provide great insights.