There is a great feeling when you make a right call and fix it. I can tell that even after all these years and lot of right calls you still got that feeling😊. Thank you for another good video!
I absolutely love this video! Showing real world case study and classroom theory to explain what we were seeing is invaluable to me. That's the best way I can learn. Thank you for posting this Paul.
Five of the first six comments are female. How cool is that? Proof that this field can be for everybody that wants to learn. And Paul Danner's teaching makes us all better at doing what we love. Thank you sir!
I have a 08 escape 3.0 over 2 years dealing with figuring out the intake backfire... almost have a entire new engine already...wish I could have you diagnose my problem. But love your videos and I just subscribed and I have been learning alot on stuff I haven't learned about the scan tools and charts. 👍
You need to consider one thing. On some Asin systems, if the crank sensor signal is weak or non-existent, the computer will try to use the cam sensors to synch the ignition allowing the engine to start. If it can't synch it, the computer shuts down the ignition system. That is why you sometimes get the engine starts and doesn't at times. In this case, once the engine starts the crank signal is strong enough for the computer to use the signal. In this instance, the crank sensor code will not set. You are getting an RPM reading when it cranks but won't start because the computer is programmed to use a cam signal for RPM and to try to synch the ignition. That explains why you are hearing a backfire in the exhaust. The computer is trying to synch the ignition and is firing a coil 180 degrees out of synch. Hope this helps. I have seen this more than once. Great call and video showing this.
In this case, the cam signal is not elaborate enough to be used alone. So while I agree with the theory, it doesn't apply here. The reason for the backfiring at times was because the crank signal was right on that threshold of being seen and not seen. Oh and btw, that's not an Asian only thing. Many systems today can start and run without a crank signal due to the very detailed cam signals.
Ty for your knowledge, I am gonna check my voltage on my exhuast cam sensor tomorrow on forscan. 2 years of this backfiring...you may juat have saved me 🤣😅
Amazing Thanks for sharing SD😍😍😍 Really really interesting case study, so many things happening at the same time, I recently had a brand new Jetour X70 (Chinese vehicle) with an intermittent stall during coasting or refueling, it was losing CKP signal, service info suggested to change the CKP sensor with a replacement part number Unfortunately, the new part also didn't fix the issue (kept stalling intermittently), so I swapped the new sensor with a old/used sensor from a 3 year old vehicle (in the shop) & surprisingly it fixed the issue😇 Both sensors have difference in the sensing area diameter but fit exactly the same, I wanted to take scope captures but due to our shop policy to fix everything in a rush I didn't get a chance to do that (which is depressing)🤔 Love your work Guy's😍😍😍 STAY BLESSED DANNER FAMILY🙏🏻🙏🏻🙏🏻
2012 Nissan Frontier V6, 105k. similar symptoms, intermittent crank no start. Crankshaft code. I am unable to take measurements but using knowledge of other factors along with code. i rolled the dice and put a crank sensor in and was correct. Saved me hundreds
I've seen this same senario cost someone thousands! Aftermarket crank sensor replacement caused all kinds of issues. It's good you got lucky. Glad you fixed it based on the code
Hi paul, thanks for sharing another one of your awesome case study. I have watched every you have posted and have learned so much from you. You have been my inspiration for becoming an diagnosticians. I really appreciate the wealth of knowledge you have and are sharing with all of us. 🙏🏼👍🏻
This is awesome stuff Paul! Hope you had a Happy Thanksgiving! I'm greatful you're teaching the next generation of techs! I went to school in 95 and i still learn new stuff all the time! God bless
Always great information! I wish the flat rate world was friendlier to high end diagnostics. I've had vehicles from chain stores that had parts chucked in them for a month before they gave up. Then it gets towed in and we start getting pressured to sort it out in an hour. Which explains the parts chucking done before, lol.
Exactly! And add to that, the customer doesn't want to spend any more money! You know how we weed these out at my brothers shop? $500-600 up front retainer before we will even touch a car like that. It's been working!
Hi Paul Another awesome video and thanks for all your training content on the Snapon Versus plus its excellent that you explain how the zoom works on the snapon scopes and you using it to help solve this one.
The scope trace you showed when cracking without ECU power is due to the remanent magnetization of the sensor core. It is interesting that the old and new sensors are different, tells that some how that magnetization of the core is now "weak". I thought that maybe the winding might have an internal short, but I more of the idea that the magnetization capability of the core ( th e permeability u) changed. Regarding measuring sensor resistance needs to be done with 4 wire method, this is a copper winding in the end. I would love to be able to do that, and know if there is a internal short of the core changed. Nice video, thanks for sharing.
If you dont have a lab scope but a good meter. Knowing the design of the sensor. Could you just measure the ac voltage output of the sensor on crank and see if it measures past the 500mv threshold?
Hi sir from Algeria ! I follow you years ago I think since around 2013/2014 I guess and you are the best. I know, I know you said it many times, you don't fix car issues through message but I have in hands a huge one and I am asking please for your help you or one of your followers. Here's the case . I have in hands a 2011 auris Toyota with an automatic gear replaced by a manual one without changing the ecu. It was running fine except an annoying check engine light . Deleting it using autel im608 pro2 and since then the car starts but the accelerator pedal remains totally unresponsive ! What to do in this case ?
I need to get another lab scope was sporting the original Verus. I want to try the newer micsig. Looks like a good scope seen it on super Mario diagnostics
I ust got a Micsig VATO 2004 its battery powered and works with Android Tablets. I curently have it connected to my Otofix D1 Pro scanner and it.works.great amd the price cant be beat for what you get. The user interface is awesome. Its around $300 for this 4 channel scope.
@@philh9238 I just wanted to let you know that after using the Micsig VATO 2004 it doesn't support Pressure Transducers for a probe option. I tried working with Micsig to let them know how important of a basic test this is but they mentioned that this test was for professional engineers and not on the VATO2004. I think this is important test that Micsig should provide on the VAT02004 as its an Automotive Oscilloscope as pressure checking is important basic test. The user interface and everything else is excellent but it is missing this major functionality and I thought I would tell you just in case you want to do compression checks. So no pressure probe configuration.
for the cam sync in the distributor? Scan data was the way to go with those from memory, but if you had a known good crank and cam (distributor sync) waveform, then yes, you could time it with a pico
I HATE how snap on does their vertical cursors. It should go horizontal across the screen like Pico and everyone else so you can set the cursor and quickly see if the signal is higher or lower.
11:35 Sorry i have not locked in your channel lately and so haven't seen this if it was first there or then i just for get this. BUT, Timing!!!!!! Very much engine different's do you have rubber belt that runs in oil for "emisions" Is just plane, ...BS if you ask me asked "Gates" ~10 years a go, bad idea and now, hmm, no its ok actually its great"!" ; ) yeah sure! I don't have video but here is something... Sounded on crank like timing has jumped............. Yeah timing was(and is) ok. on car, but that men't just new crank bolt..(not hole timing job) Engine run with fuel("brake clean" and "diesel", ... "oh dear"). .. so it has to be fuel, but the pressure on common rail is high. :\ Fuses has power on Both sides (tested with robe on scope). and ground holds H4 bulb Whats Wrong? Fuse is Wrong There is non yes its not there and what i know this run day a go. But no it neeeds it to run injectors on diesel... yes they need power today at least some of them. and There is still power for normal test lamp yes! And no cods? Yes! Lazy coders ? Yes!!!!! Yep h4 and that light started to light up slowly(q dose to the one that build this by bass on this ECU). Yep jump real power to that(added the fuse that should have bean there) and it started right up. Buyer run it and take the fuse(but why) ? Tow trucker try to fix it and take the fuse(but..)? or it was the original problem and something is on that wire(but why take out the fuse?) ? ps. the power comes from the ecu(that shows on the "Engine Control Unit" side of the fuse) i tested it by cutting wires but how it run before? who is lieing? hmmm sorry my English. and yes i swap parts for test and just for test but still i swap pars ;)
@ScannerDanner for sure. The free videos have done so much for my ability, I know the book and at some point the premium channel are going to take that to the next level
![Toyota Camry - Intermittent No Start, Backfiring, Runs Good When it Starts [Part 1]](http://i.ytimg.com/vi/Tro9M12LoQw/mqdefault.jpg)
![Toyota Camry - Intermittent No Start, Backfiring, Runs Good When it Starts [Part 1]](/img/tr.png)
![2010 Sonata No Start [What are we missing?]](http://i.ytimg.com/vi/2n1kQBSHb7A/mqdefault.jpg)
No matter how far I am getting advanced in this field , I keep learning from your video and explanation. Thank you so much .
This comment made my day. Thank you!
There is a great feeling when you make a right call and fix it. I can tell that even after all these years and lot of right calls you still got that feeling😊. Thank you for another good video!
Absolutely!
I absolutely love this video! Showing real world case study and classroom theory to explain what we were seeing is invaluable to me. That's the best way I can learn. Thank you for posting this Paul.
I really appreciate it! That's the whole point! To put the classroom knowledge into practical situations. Appreciate this comment
YOU ARE THE GUY WHO HELPING MANKIND ❤
I'm trying 😊 thank you!
Five of the first six comments are female. How cool is that? Proof that this field can be for everybody that wants to learn. And Paul Danner's teaching makes us all better at doing what we love. Thank you sir!
Those were bots and I banned them 🙂
Best automotive tech teacher in the universe 😁
@@ScannerDanner bots are out of control lately. They're everywhere
You are the master. You have been my inspiration for becoming a diagnostician
Thank you, I appreciate that!
I have a 08 escape 3.0 over 2 years dealing with figuring out the intake backfire... almost have a entire new engine already...wish I could have you diagnose my problem. But love your videos and I just subscribed and I have been learning alot on stuff I haven't learned about the scan tools and charts. 👍
You need to consider one thing. On some Asin systems, if the crank sensor signal is weak or non-existent, the computer will try to use the cam sensors to synch the ignition allowing the engine to start. If it can't synch it, the computer shuts down the ignition system. That is why you sometimes get the engine starts and doesn't at times. In this case, once the engine starts the crank signal is strong enough for the computer to use the signal. In this instance, the crank sensor code will not set. You are getting an RPM reading when it cranks but won't start because the computer is programmed to use a cam signal for RPM and to try to synch the ignition. That explains why you are hearing a backfire in the exhaust. The computer is trying to synch the ignition and is firing a coil 180 degrees out of synch. Hope this helps. I have seen this more than once. Great call and video showing this.
In this case, the cam signal is not elaborate enough to be used alone. So while I agree with the theory, it doesn't apply here. The reason for the backfiring at times was because the crank signal was right on that threshold of being seen and not seen.
Oh and btw, that's not an Asian only thing. Many systems today can start and run without a crank signal due to the very detailed cam signals.
@@ScannerDanner Got ya. Keep up the good work
Ty for your knowledge, I am gonna check my voltage on my exhuast cam sensor tomorrow on forscan. 2 years of this backfiring...you may juat have saved me 🤣😅
Amazing Thanks for sharing SD😍😍😍
Really really interesting case study, so many things happening at the same time, I recently had a brand new Jetour X70 (Chinese vehicle) with an intermittent stall during coasting or refueling, it was losing CKP signal, service info suggested to change the CKP sensor with a replacement part number
Unfortunately, the new part also didn't fix the issue (kept stalling intermittently), so I swapped the new sensor with a old/used sensor from a 3 year old vehicle (in the shop) & surprisingly it fixed the issue😇
Both sensors have difference in the sensing area diameter but fit exactly the same, I wanted to take scope captures but due to our shop policy to fix everything in a rush I didn't get a chance to do that (which is depressing)🤔
Love your work Guy's😍😍😍
STAY BLESSED DANNER FAMILY🙏🏻🙏🏻🙏🏻
the most difficult calls are when you have to condemn a band new part, let alone two of them!! Great job man
2012 Nissan Frontier V6, 105k. similar symptoms, intermittent crank no start. Crankshaft code. I am unable to take measurements but using knowledge of other factors along with code. i rolled the dice and put a crank sensor in and was correct. Saved me hundreds
I've seen this same senario cost someone thousands! Aftermarket crank sensor replacement caused all kinds of issues. It's good you got lucky. Glad you fixed it based on the code
Hi paul, thanks for sharing another one of your awesome case study. I have watched every you have posted and have learned so much from you. You have been my inspiration for becoming an diagnosticians. I really appreciate the wealth of knowledge you have and are sharing with all of us. 🙏🏼👍🏻
Thank you so much for the kind words! It means a lot to me that I can help people.
This is awesome stuff Paul! Hope you had a Happy Thanksgiving! I'm greatful you're teaching the next generation of techs! I went to school in 95 and i still learn new stuff all the time! God bless
Thank you for the kind words. I appreciate it!
RESPECT FOR YOU ❤
Always great information! I wish the flat rate world was friendlier to high end diagnostics. I've had vehicles from chain stores that had parts chucked in them for a month before they gave up. Then it gets towed in and we start getting pressured to sort it out in an hour. Which explains the parts chucking done before, lol.
Exactly! And add to that, the customer doesn't want to spend any more money! You know how we weed these out at my brothers shop? $500-600 up front retainer before we will even touch a car like that. It's been working!
Glad you did the fix with a bad battery! I was thinking from the last video it was and the sensor and the battery that would need replacement
me too because it really provided the best before and after data. I even made sure the battery was weak on the start up (which wasn't hard to do)
Amazing diagnosis. ❤
Hi Paul Another awesome video and thanks for all your training content on the Snapon Versus plus its excellent that you explain how the zoom works on the snapon scopes and you using it to help solve this one.
Thank you so much. I couldn't do this without you guys
Appreciate it fellas. Kaleb, I need to know some of your tips on making quality videos bro. Appreciate it
We've talked about him doing some of those types of videos 😉
@ScannerDanner nice, can't wait
Great stuff as always 👊🏻
Thank you so much team Danner
The scope trace you showed when cracking without ECU power is due to the remanent magnetization of the sensor core. It is interesting that the old and new sensors are different, tells that some how that magnetization of the core is now "weak". I thought that maybe the winding might have an internal short, but I more of the idea that the magnetization capability of the core ( th e permeability u) changed.
Regarding measuring sensor resistance needs to be done with 4 wire method, this is a copper winding in the end. I would love to be able to do that, and know if there is a internal short of the core changed.
Nice video, thanks for sharing.
Great video paul
Funny how ScannerDanner and SMA both got a wild Camry at about the same time
nice! lol, I didn't know that
Excellent video thanks
Like 👍 ❤❤❤❤ these videos how was your Thanksgiving?
Awesome Outstanding job thanks
Like 👍 ❤❤❤❤ these videos
Nice danner
If you dont have a lab scope but a good meter. Knowing the design of the sensor. Could you just measure the ac voltage output of the sensor on crank and see if it measures past the 500mv threshold?
you can but it will read less because a voltmeter will show an average. I forget the formula but it's around .65 times peak to peak
@ScannerDanner buying you book and corse. Your TH-cam videos have helped me through alot.
Looking forward to seeing you there. Thank you!
www.scannerdanner.com/join-scannerdanner-premium.html
Hi sir from Algeria ! I follow you years ago I think since around 2013/2014 I guess and you are the best.
I know, I know you said it many times, you don't fix car issues through message but I have in hands a huge one and I am asking please for your help you or one of your followers.
Here's the case . I have in hands a 2011 auris Toyota with an automatic gear replaced by a manual one without changing the ecu.
It was running fine except an annoying check engine light .
Deleting it using autel im608 pro2 and since then the car starts but the accelerator pedal remains totally unresponsive ! What to do in this case ?
I need to get another lab scope was sporting the original Verus. I want to try the newer micsig. Looks like a good scope seen it on super Mario diagnostics
I ust got a Micsig VATO 2004 its battery powered and works with Android Tablets. I curently have it connected to my Otofix D1 Pro scanner and it.works.great amd the price cant be beat for what you get. The user interface is awesome. Its around $300 for this 4 channel scope.
I’ll look into it. That’s around my price range
@@philh9238 I just wanted to let you know that after using the Micsig VATO 2004 it doesn't support Pressure Transducers for a probe option. I tried working with Micsig to let them know how important of a basic test this is but they mentioned that this test was for professional engineers and not on the VATO2004. I think this is important test that Micsig should provide on the VAT02004 as its an Automotive Oscilloscope as pressure checking is important basic test. The user interface and everything else is excellent but it is missing this major functionality and I thought I would tell you just in case you want to do compression checks. So no pressure probe configuration.
Oh and btw I been noticing the newer Hyundais kias Toyotas are putting scope screen shots in service information.
The real question of the day is how does your older brother look younger? And has them golden locks.
he is 14 months older than me and stole the better genes I guess haha
Does that type of sensor actually fail? 🤔 Maybe the magnet is just dirty.
Yep and you just watched one of the ways they fail.
Can I use my pico to time my 96 dodge 1500
for the cam sync in the distributor? Scan data was the way to go with those from memory, but if you had a known good crank and cam (distributor sync) waveform, then yes, you could time it with a pico
Watched part 1, and now...
Imagine this happening on a turbo diesel engine
I HATE how snap on does their vertical cursors. It should go horizontal across the screen like Pico and everyone else so you can set the cursor and quickly see if the signal is higher or lower.
Agree! But then they'd have to add separate time measurement cursors like pico does.
I have the grid screen on and it kinda helps sometimes to look at the horizontal measurements.
Hi man, come do some of my work for me I'm I'm lazy...
11:35 Sorry i have not locked in your channel lately and so haven't seen this if it was first there or then i just for get this. BUT, Timing!!!!!! Very much engine different's do you have rubber belt that runs in oil for "emisions" Is just plane, ...BS if you ask me asked "Gates" ~10 years a go, bad idea and now, hmm, no its ok actually its great"!" ; ) yeah sure!
I don't have video but here is something...
Sounded on crank like timing has jumped.............
Yeah timing was(and is) ok. on car, but that men't just new crank bolt..(not hole timing job)
Engine run with fuel("brake clean" and "diesel", ... "oh dear"). .. so it has to be fuel, but the pressure on common rail is high. :\
Fuses has power on Both sides (tested with robe on scope). and ground holds H4 bulb
Whats Wrong?
Fuse is Wrong There is non yes its not there and what i know this run day a go. But no it neeeds it to run injectors on diesel...
yes they need power today at least some of them.
and There is still power for normal test lamp yes! And no cods? Yes! Lazy coders ? Yes!!!!!
Yep h4 and that light started to light up slowly(q dose to the one that build this by bass on this ECU).
Yep jump real power to that(added the fuse that should have bean there) and it started right up.
Buyer run it and take the fuse(but why) ?
Tow trucker try to fix it and take the fuse(but..)?
or it was the original problem and something is on that wire(but why take out the fuse?) ?
ps. the power comes from the ecu(that shows on the "Engine Control Unit" side of the fuse) i tested it by cutting wires but how it run before? who is lieing?
hmmm sorry my English. and yes i swap parts for test and just for test but still i swap pars ;)
@scannerdanner Finally bought your book. Looking forward to reading
Thank you! I know it will help you. Appreciate your support too
@ScannerDanner for sure. The free videos have done so much for my ability, I know the book and at some point the premium channel are going to take that to the next level
great explanation. Thanks