**Want to own the tools I use ?? Click on the amazon link below to get my top 5 Tools I use** Automotive Test Light- amzn.to/3z1Pdxa Flexible Backprobe- amzn.to/3Pyr3zO Multimeter- amzn.to/3PbuT23 OBD Scan Tool- amzn.to/3zaNWnq Wire Piercing Probe- amzn.to/3OecWhT

The power of oscilloscopes and people that know how to use them. Good job, Oz!

@OzMechanics

5 жыл бұрын

Just having fun with the scope. Thank you for watching

That was an awesome diagnosis, Azael! Great scope work too. Also thanks for the custom PHAD shot glass! :)

@OzMechanics

5 жыл бұрын

Pine Hollow Auto Diagnostics glad you like the shot glass

A man that actually knows what he's doing!!! WOW!!! Very impressive!

@OzMechanics

4 жыл бұрын

Thank you very much. Feel free to check out my newer videos to see more exciting diags

Great Video Oz! I wouldn’t have guessed those small ripples on the cam signal would have such an effect, but when you changed your time scale you can see it clear as day. Thanks for sharing!

Great video dude! This probably saved me from just running and buying the sensor that the codes are related to if they aren’t actually the problem

Excellent work Oz, I have been chasing a cam sensor fault on a 2001 twin turbo Subaru Legacy. I swapped out the sensor, checked and double-checked the wiring and so on. I was getting to the end of what I could check! scoped everything and hey-presto NOISE! That alternator seemed fine, was putting out a good charge and all but was causing interference. Changed the Alternator and the vehicle runs beautifully. Thank you so much for your great video.

@OzMechanics

Жыл бұрын

Awesome!!! Glad this video helped out. Thanks for watching

Very good information I’m in the middle of an electrical problem but I never thought about the alternator causing all those issues with the campshaft thanks a lot very good video👍🏼

Nice diag work bro' This one reminded me of a '94 Acura Vigor that would start misfiring around 2500 rpm. It was late in the evening, so I decided to bypass diag mode, & jump straight to iATN Fix Database mode, where I found one hit on this symptom, which turned out to be related to excessive diode ripple. So, I removed the connector from the regulator, & viola, symptom gone! New alternator fixed car. Thanks for another great diag vid.

Good job Oz. Really appreciate your videos. From experience 120 mV AC to 250 mV AC seems to be the max allowed ripple depending on manufacturers. Usually outside this range you'll get sensor related codes just like this beauty you diagnosed. Even if no codes occur it's good to test AC ripple when newer batteries are testing bad. AC voltage is bad on batteries.

@OzMechanics

6 жыл бұрын

Billy Yoder thanks brother. Yea I’ve been waiting to get something like this. I’ve read about them but haven’t messed with one that would mess with the cam.

**** Want to use the same tools I use on this video ?? Click on the amazon links below*** Flexible Back probe Kit- amzn.to/3O15CWT Alligator Clips- amzn.to/3c7l5Hq 8 Channel Scope- amzn.to/3P5Aff1

Found this video as I am tackling a stubborn P0335 Code on a 2010 Honda Civic Hybrid (not my first choice in a car but as a ride share free lancer; it is my bread and butter) Replaced cam sensor (New OEM) and it’s back six months after the repair. Ocasional abnormal idle. Rpm activity will act up while driving and shifting gears. Lurches every now and again while driving. I appreciate this thorough and informative video. I am still scratching my head on what could be causing this code but it looks like I found myself a good channel to subscribe to in the process. Video notifications are turned on. Great video!

@OzMechanics

5 жыл бұрын

Paradoxx thanks for stopping by and checking out the video and for subscribing as well. Have some new videos coming out soon

another great video with great info on the scope thank you

It's things like this that motivated me to buy a scope. Love the diagnostic strategy. Excellent work Oz 💪

@eleazarsolis5942

5 жыл бұрын

I have a 2004 F150 with the code p0340. Changed both of the sensors and check engine light lights up after a while. When the truck is in parking, it feels like a rough idle but once i put it in drive, theres no rough idle. What do u think?

@danrandle65

4 жыл бұрын

Dido on the scope fixing to get me one.

I had a similar issue with my 09 explorer 4.6,had a P0341 and it turned out it was the alternator problem,changed my alternator and the code disappeared buy itself .Thanks for your video bud

Great video, the right way to diagnose problems.

That was fantastic Oz!!! 😎💪👍 Way to prove it out. And the great thing is once completed you can verify the repair with confidence! Great lesson

Great catch on that signal. True diagnostics at work!

@OzMechanics

5 жыл бұрын

Joe's Auto Electric thank you very much. Have a new video coming out soon that was a fun job

I liked your video tons more since minute 6 👍🏼

Thank you so much I have problems with my cam sensor didn't know what was going on until I watch this video and told my personal mechanic and everything worked out right thank you

Super good vid. Nice verification. Always love the vids!!

Thanks bro life saver.. I got the same problem whit this code tomorrow I’m check the alternator signal and camshaft signal too new subcriptor

Good stuff man, wish you were my mechanic

Thanks a lot buddy Grey Bidrio I love your videos which is Gracias amigo👀👍🌿

Excelente diagnostico gracias x compartir sus conocimientos sobre la mecanica automotriz.

@OzMechanics

5 жыл бұрын

Gracias por mirar mi video :)

You did your readiing on tools u use way to go 👍🙌👏

Spectacular video, Oz!!!

Wow! Excelente diagnóstico! Muy buena observación mi hermano, sin el scope le hubieran metido hasta agua bendita para tratar de arreglarlo.

@OzMechanics

6 жыл бұрын

Moving Up Auto Diagnostics 😂 😂

You would be vey hard pressed to find that without a scope. Fantastic work Azael

@OzMechanics

5 жыл бұрын

Yea that would have been a wild guess there. Hey thanks for stopping by

When I first started down this path of learning about diagnostics, I was attempting to find a way a DIY'er could bypass using a scope and use common methods (cheap). But as I learn, I have also realized having a scope is required, or, you take it to a good shop.

@OzMechanics

6 жыл бұрын

That is true. Scope just makes everything easier and clarifies the actual problem. Once I got my hands on one I was hooked

Now how would anyone ever see this without a scope?! Beautiful video Oz ! Great diagnostic process all the way through

@yormanpadilla1111

5 жыл бұрын

i was thinking the same question ...

@amr-50

5 жыл бұрын

without his searching scope wouldn't solve it at all , scope is a good tool when a good reference is available which is not always the case , which proves that the scope is just a fancy tool but it's not necessary at all to have

@NewLevelAuto

5 жыл бұрын

amr hamed so how then would you pursue a flex ray network failure due to signal attenuation? It's not a fancy tool at all. It's quite basic . And if used properly is one of the greatest in any diagnosticians arsenal. Are there other ways ? In most cases yes , but certainly not all. A decent scope is under 100 dollars. A snap on ratchet used is the same price. Remember that we do not have the luxury of just repeatedly fitting parts to see if it's the failure. We only have a few hours and that customer must have their vehicle back. Where are you from if I may ask?

@NewLevelAuto

5 жыл бұрын

amr hamed never mind . I see you like Scotty Killurwallet. And you also know now how to super clean an engine bay as well thanks to Chris.

@amr-50

5 жыл бұрын

BTW i have a pico scope but you already said what i am trying to say ( Are there other ways ? In most cases yes ) that's it

awesome troubleshooting, good mechanic!

@BboyIllusi0n

4 жыл бұрын

bud prepper he’s technician cus he diagnosed it and confirmed what the actual problem was ;) a mechanic just replaces parts hoping it’ll fix it

Wow great video thank you. I want a fancy scanner now!

Good catch, great video

Had this problem with my mustang 12 years and no one had a clue what was wrong with it. I eventually found a clue on a crown vic forum and got the alternator rebuild. The guy thought I was crazy for thinking it would fix the cam sensor code

Thank you! I really hope this will help me

Very well done. I wish your shop was closer

Hello My friend, excellent diagnostic.

Very informative! Thanks for that great information!!!

Awesome video!! I love you, I mean, this video so much! - your biggest fan

@OzMechanics

6 жыл бұрын

Linda Perryman ooooh really lil baby. I mean random subscriber

Wow . thanks bro, from I install a new alternator I been getting that p0340 code, I change the cam sensor two times still no change , so it is the altinator, 1998 lincoln navigator. Thanks a lot back to AutoZone I go

@OzMechanics

3 жыл бұрын

It might be something else that code is pretty vague. The proper way is to hook an oscilloscope to it

Great video my friend you rock. Sure helped me on my 97 GMC Sonoma same problem alternator

@OzMechanics

2 жыл бұрын

Sweeeeeet and glad this video helped out

KNOWLEDGEABLE Oz Mechanics Great tutorial thank you very much helpful video Oz Mechanics Good Morning 🙏 🌄 From Nick Ayivor from London England UK 🇬🇧

alternator noise feeding through the entire power lines. Nice. The should put filters on cam sensor. nice video

Very nice video! I am newer to your channel but am very glad I subscribed. Thank you for your videos!

@OzMechanics

6 жыл бұрын

Nick hey thanks for joining in. Don’t forget to hit the bell to get the new video notification

@comingundone27

6 жыл бұрын

It was the first thing I clicked after subscribing haha.

cool man! good job. I got a p0340 code on a Pacifica that will now not start...even after I replaced CPS. BUT!, you have given me another place to consider.

@AnythingEverythingGh

Жыл бұрын

Did you fixed it ?

@TheRoadLessChosen

Жыл бұрын

Well?

Great video man good job

Loved it , excellent presentation ! I’m having similar problem with my 94 3.1 liter Olds Ciera , gone through 13 cam position sensors , very frustrating, especially if that’s not the problem , same trouble code here

@sargetester99

5 жыл бұрын

13 sensors? , your halfway there man, don't loose hope, don't give up on that one, you are never going to forget that one,

@myfagan

5 жыл бұрын

@@sargetester99 bahahahahhahaha

@fernandoobregon3359

4 жыл бұрын

I replaced like 3. They last for like 6 months to a year. Always wonder why same code comes back.

nicely done!

The money light 😂

Great video sir !

That was great , my cam pos sensor is barely a year old. The body that the sensor rides on was changed about a year and a half ago. That damn p0340 pops up every month or so, truck runs good so I don’t think that it’s sensor. It’s gotta be the alt. Thank You for the Video.

@misterclark74

5 жыл бұрын

so was it the alt ?

Great video man✌️✌️

Great info my guy!

Great Video Bro..

@OzMechanics

5 жыл бұрын

Thanks for watching

Nicely done my dude!

@OzMechanics

2 жыл бұрын

Thanks for watching

Oh cool. Alternator fits my other codes. I do miss having access to stuff like mitchel online and tech line along with the dealer tsb’s

Good info!

I got a 2000 Cadillac Deville DHS it has several codes and im now wondering if it all related to my alternator....putting out to much voltage??? Great video... got the 0340 and couple other electrical issues, hmmmmmm

I also think that my transmission Governor solenoid sensor needs to be replaced as well because it won't shift into gear 3. Out here in Atlanta Georgia it seems like people at mechanic shops don't want to help me so I'm thinking of buying some tools and fixing the problem myself

really great video...thank you

@OzMechanics

3 жыл бұрын

Basics that’s for watching. Glad you liked the video

Had this problem with my 1984 Camaro. The choke light would flicker and the key buzzer would partially come on at certain speeds. It was the diode trio in the alternator had lost one diode function. Ac feedback caused the choke light to flicker. 7 dollar part.

He's a genius!

Wow, thank you!

Check engine came on and code P0340 cam position sensor. I replaced and check engine light still on. So I did another scan and code P0340 was coming up, suggesting that I check the plug of the sensor. It looked good. Watching your video alternator will be checked. Thanks for the info.

@TheRoadLessChosen

Жыл бұрын

Did it work?

@lam_nguyenn_

4 ай бұрын

Did it work for you

Great diagnostic and shows why electronic problems can be tricky. I hope those who don't wrench on their cars appreciate why the mechanics they pay can't always solve every issue on a 1st pass. It appears the alternator output noise coupled into the analog ground of the engine controller (needs more filters), and also that perhaps Ford chose a too-low threshold for the VR signal from the camshaft sensor. Perhaps purposeful so it would still work as the sensor magnet aged or if installation distance was off, but also makes it touchy to any noise in the signal or controller.

@darishopkins2573

Жыл бұрын

I'm betting any noise is irrelevant.

@williamgrissom9022

Жыл бұрын

@@darishopkins2573 No need to bet since he proved the alternator was the noise source. He disabled the alternator so the engine then ran off battery alone and the camshaft sensor signal became very clean. He also researched the problem for this specific model and found where others cured the sensor code issue by swapping in a rebuilt alternator. The camshaft sensor error code then disappeared, proving that the noise was the problem (thus was very relevant).

Well, I didn’t expect those results.

Si soy Sergio de México el vídeo me arreglo mi problemas gracias

7:35 "Let me try to get this, so it could be nice and good." LOVE IT!

@OzMechanics

4 жыл бұрын

Jack got to love that nice and good stuffffff

@7jack7

4 жыл бұрын

​@@OzMechanics I appreciate nice and good. Nice and good is so much better than nasty and bad. Who among us has an argument with nice and good? Let those who do walk around the block a few more times. Be that as it may, instead of, "How to fix code P0340", I would suggest, "One way to fix code P0340." Your fix, while very nice and good, may not fix all instances of P0340. My neighbor just came into possession of a 2001 BMW 525i that is throwing a P0340 DTC. I need to get a scope like you have to probe the situation. I will keep you updated.

@karyl-lynndesrosiers7599

3 жыл бұрын

@@7jack7 fixed?

@7jack7

3 жыл бұрын

@@karyl-lynndesrosiers7599 The car had a few other issues besides the P0340 code. My neighbor took it to the local German car shop that has a good rep, Siegfrid's. My neighbor said a new sensor fixed the P0340 code problem. The car ran beautifully he claims, even when it was throwing the code.

@karyl-lynndesrosiers7599

3 жыл бұрын

@@7jack7 Done that, twice. Once OTC, second time, OEM. No go, chasing wires as I text. Thank for answering.

good job

If you feel like this video helped out, feel free to support the channel by donating. Just one click away on the link below, to help support the channel :) www.paypal.me/ozmechanics

Nice man 👍

Great video. Just subscribed. That’s the way to diagnose.

@OzMechanics

4 жыл бұрын

Feel free to watch my other cam and crank sensor videos and don’t forget to smash that bell to receive all the notifications on my new videos

Got the same problem, Thanks!

@OzMechanics

Жыл бұрын

Awesome. Glad this video helped

Just one more thing that makes me want a scope.

Real talk good job. Dont be a parts changer

I done my timing chain on astra h, as soon as you suspected the alternator, a bell rang in my head and I dont remember plugging this little connector back in. :/

You might of just solved my issues. I have a 06 3v gt with a p0340 code and before the code popped I had a check charging system light pop and go away and my alternator whines at high RPM and car surges

YOURE AMAZING!!!!!!! Thank you thank you, thank you for the truth!!!!! YOU PROVED IT!!! WOW!!! I love you, bro! SIX professional opinions, NOTHING!!!! Wow, again!6

Hey Oz I have a 2005 Subaru Legacy gt i have a cam sensor circuit code and i changed them both changed the oxy sensors had new coils an sparks done an a month later i got the cam code but it runs fine but when i go to slow down it either dies or has a rough idle. Not all the time does it do this though it is random. Most of the time when i crank up it has a moment or two the idle sounds rough an some times when i put it in drive or reverse it acts up but its random though so no consistent. Would that be the wiring harness to the sensors? being its a Subaru not the best wiring. Or would it be something else cause its not feeling a running like a bad cam sensor thank you for your time!!

Good job.

Good job on the video, not all of us have an expensive snap-on scope, how do we diagnose a P0340 code without an expensive scope?

@DFX2KX

5 жыл бұрын

Any oscilloscope should work here:a cheap chinese one aught to do just as well. The Snap-on one is just made with Automotive use in mind (and they're built like tanks). You may also be able to remove the alternator and take it to a shop to have it tested for this as well, which might be a cheaper option then taking in the whole car.

I'm having this problem right now on a ranger. I don't have the fancy tools and would not have found this. Thanks. I wonder, however, batteries are capacitors that are used to clean up noise on dc. Shouldn't the battery have cleaned up this problem? I wonder if there is more that is wrong here. Thanks.

Hi there Oz I have that problem with my 2004 nissan pathfinder I changed twice my camshaft sensor bank 2 cause I don't have that equipment that you have, so you think maybe is my alternator?

I have an 03 neon that dies when driving. Have codes for cam and crank sensors. Replaced them both and took timing cover off to check it. The timing looked good but I put in a new belt since I had that off. There has been no change it still does the same thing. Is there a way I can test the food of the alternator without the scanner?

You do nice work.. Other sites have accused the alternator..You explanied and proved it Thanks.

@OzMechanics

5 жыл бұрын

Thank you very much. It’s nice to know you appreciate my video

I understand the video very well. But I have the same cold going off on my 1999 Dodge Ram 1500 5.9L. And i don't know if it's just that needs to be replaced or is it just my distributor not screw down all the way that's causing the real problem

Added information... the Radio suppression capacitors are found on the front of the engine. Those capacitors aren't for the "radio." Capacitors filter out noise just like what you saw on your scope. In other words they filter out radio frequency noise (RF noise). You might have fixed it with the alternator but I believe the better fix was with the capacitor... it only costs $8. Soon the new alternator might cause the same problem and you'll be in the same problem. Excellent video but go further just like you said and don't throw parts at your car. In fact might be able to clean the connections on the capacitor and it'll be free.

@florenbaron7111

Жыл бұрын

Does my 2014 Ford mustang v6 3.7 have capacitors?

@HousesandCars

Жыл бұрын

@@florenbaron7111 There's a good chance it does but often they are called something else. Noise filter, DC filter, Noise Reducer, etc. Inside it's usually just a capacitor.

@dougburkhammer791

Жыл бұрын

Thanks for that tip !!!

Could you please make a video of replace camshaft position sensor of Ford transit 250? Thank you.

Hi OZ I have a 2006 dodge caravan and I have an issue with it I got an engine light on and it started to run rough tough to start and jerking at roughly 2500 rpm diagnosed both sensors and wires there perfectly fine can the alternator cause this ?

I have this code on a 2012 Chrysler 200 I just picked up cheap. Has new cam and crank sensors and a new connector in the back. Connector tests 5v on one side and minimal on the other. Before the charred connector was changed it was reversed minimal on the othet one and 5v on the one now reading low if that makes sense. Could it be the alternator?

Does the camshaft position sensor brand matters, such as Dorman brand?

Is there a way to diagnose this without an expensive scan tool? I've just got a fluke meter and a cheap Innova scan tool that doesn't graph.

My trailblazer doinsame thing changes cam sensor 2 times still showin this code great video I'm gna test alternator

@OzMechanics

2 жыл бұрын

I have more videos where I test the cam sensor. Please check out those videos as well. A proper diagnosis is always need to verify the problem

I have a 2004 Nissan Frontier 4x4 3.3L V6. It all of the sudden would just not start. It threw the P0340 Code so naturally I had the County mechanic replace the distributor because that is where the Cam position sensor is; well, it still didn't fire after that. I saw another video that said this code could also be caused by the Crank position sensor, so i ordered one of those and it hasn't arrived yet. I also ordered a knock sensor because I also got that code a while back when I was having misfires and needed to replace spark plug 6. It is winter here in Northern MN and my truck is a long ways away from civilization parked in the snow. I really need some help with this one.

Heloo Oz..this is pretty awesome. i am using a Lexus RX300 v6 engine and i had both my Camshaft sensors changed including the Crankshaft sensor. Both the Camshaft sensors responded positively except the Crankshaft sensors which failed to reset. The code keeps on coming back. i also have this Whinnying sound which all along i have been thinking it comes from the Power Steering Pump. Any advice?

I'm having this same code in my expedition. Took to Autozone pulled codes. Had the position senor fault P0340 Said replace alternator, with the cam sensor faults. Will find out more Monday when I have my Tech look at it

@shainebingham9310

5 жыл бұрын

@@coolairheights I never found out. I traded it for a Brand New F150.

good call

@OzMechanics

5 жыл бұрын

Pete Miller thanks for watching

Thanks for the video, I got a problem where I have trouble to start hot engine on Citroen Jumper 2,2 hdi150 - I have changed many sensors and starter and no effect - I just might be that I got faulty alternator and that gives bad voltage specially when its driven hot. Alsoo I got the P0340 and P0016code. Cam and crank sensors have been replaced no effect so far Thanks for video - seems I need to try new alternator.

I got a question. I just replaced my cam sensor (bank 1) on my Nissan Pathfinder 05 and the code is still coming up. What possibilities do you think it could be? Connector? Wiring? Defective part or maybe something else? Because my car starts fine and runs, just bugging that I can't find the root problem. Thanks for the video, gave me more insight!