Bad Engine Computer Testing Part 2

[@hardtopte72]

I'm not normally one to comment on KZbin videos, but yours are in another league. I left a national chain and dealership auto repair work for another career altogether. Even in my new career, i find myself forced back into car repair through maintenance and repair of my own vehicles and those of friends and word of mouth "customers." I am pretty confident I have watched every video on your standard channel and have actually used two of your case studies (Ford Taurus Fuel Pump and Corolla MAF) as well as your amazing video on fuel trims to DIRECTLY and CONFIDENTLY repair vehicles. Specifically, even with a good track record (large parts of which were probably luck) for 1st time repair, I feel more prepared than ever thanks to the symptom knowledge that allowed me to "see" what I was seeing and hearing, diagnosis ability which allowed me to confidently identify the problem as the true cause of the complaint, and repair the problem once and for all. Your work this far has been invaluable and I assure you even though I am at best a side job DIYer in the professional sense, I will be buying your book and paying your knowledge forward. I'm not sure if you will ever read this, but if anyone else does, I hope this comment let's them see your work for what it really is. Changing parts is generally the most expensive way to fix a problem. Your channel brings the art of diagnosis to those without the ability to learn the hard way and without the path that brings them to a school with instructors like you. Thanks again!

[@mmichaeldonavon]

You, sir, are absolutely correct!

[@ScannerDanner]

Thanks so much Mike G! I know this comment is old but I really really appreciate it

[@billrimmer5596]

Yes Mike I totally agree! Seeing him in real time miss things and then find them with good old logic and sticktoitnevess is great!!

[@dennismartin5807]

@@ScannerDanner hey i got 07 colbalt no crank no start but i got my 5 volt ref on the map can you help me out

[@ScannerDanner]

@@dennismartin5807 first step, you must scan it for trouble codes, if there are non, start by attacking the starting system and find out what you are missing, like on this video kzbin.info/www/bejne/paCUhIV_e66entU

[@faustogonzalez8397]

DITTO the comment below, could not of said it more effectively. Without Question, Paul your teaching techniques, your approach to diagnostics, your sincere approach to your students are by far WITHOUT EXCEPTION the best automotive online resource. I've followed you now about 5 years and every video is a Great Learning experience for me. I am also a Premium Subscriber, the best decision I've ever made for online automotive resource information. I am amazed at how you effectively you diagnose and troubleshoot problems that have been misdiagnosed or blatantly incorrectly handled by the "Almighty Dealership Technicians". KEEP UP THE GREAT WORK PAUL, KEEP THE VIDEOS COMING, you'll never truly know how you have impacted your viewers in such a Positive way.

[@curlymyhero]

Scanner Danner---my hero again!! Well, just watched Vol. 1 & 2 of this series since I'm chasing down a 'limp mode' on my V12 Mercedes and whether my ecu is bad. Worse is I have NO fault codes so it is challenging! This video taught me that a 5 v. ref circuit means the ecu is good--as long as the grounds r good. Big relief. Also, y did that stupid dealer tech unplug the crank pos. sensor just to change out the bad ecu??? Then later claim the 'timing chain is bad'!! Wow!

[@ScannerDanner]

Well technically it doesn't tell you everything is good with the ECU, only that it is at least "alive". Also, I believe I was the one that unplugged that crank sensor in part 1 when I was doing my reference circuit tests?? I can't remember, but yea, they wanted to do timing chains lol

[@curlymyhero]

@@ScannerDanner Yeah in my case I'd need to send the ecu out for testing. Refurbished is about $275,

[@AntonioClaudioMichael]

No computer Likes positive power going through its ground circuits good series @ScannerDanner

[@edwardsaunders5419]

hi I came across your video, and as I started in the motor trade over 50yrs ago it took my attention. I have been across the years working on sidevalve overhead valve twin cams, electronic ign, fuel injection then computer controlled systems. I wish I had you as a teacher years ago! it would have saved a lot of spanner throwing and door slamming. best tutorial I have found. by the way I come from the u.k.

[@ScannerDanner]

Thanks so much edward

[@wodeyaeric5351]

Hi Edward. 50yrs? What an experienced man!!

[@roadkill5333]

ckp-unplugged. Pcv line-broken/unplugged. Air intake line-broken/unplugged. How do we fix this? REPLACE TIMING CHAIN!! Priceless! I like your videos. They are most entertaining. And of course, educational. I too, have a 4.9l ford no start that's kicking my butt!! Been a parts changer since I was a kid. I have long since given up on the dream of being a mechanic when I grow up. Thanks for sharing with us.

[@ScannerDanner]

It's never too late brother! Thanks for watching and for your kind words.

[@mattbranson9489]

You make me want to get I better scan tool lol I live in the multimeter era still but the amount of info you can pull with that thing is amazing and we’re at least 100 miles from a dealer to fix anything and most of the time they won’t anyways so we are always buried in similar situations your videos have really helped a lot of people in our area with just helping adapt the thought process that goes into our diagnostic system really appreciate your time that goes into these videos it really helps our small rural community keep up with the times especially with the machines getting more computers in them and no service techs available from the dealership a tractor goes down at harvest it can break some of these farmers so we have to fix it ourselves and your videos are vital to that much needed help thanks again

[@ScannerDanner]

Let me help get a Topdon Phoenix lite 2 in your hands. It lists for 800 and will be exactly what you need and I have tool grants I'm helping others with. Email me at [e-mail] and I'll hook you up with a grant. With the grant it will be a lot cheaper Here is the tool I'm talking about www.aeswave.com/Topdon-Phoenix-Lite-2-p10173.html

[@MrRcgillet]

in case you didn't know... you are absolutely briliant. I have lean so much from watching them. Thank You much.

[@ScannerDanner]

Thanks Ralph!

[@DJDevon3]

Videos like these are what makes this channel so delicious. I'm eating this stuff up and can't get enough. Going back to show new data is great but seeing it done live (though longer video) is very important to having new techs learn real world scenarios where they can imagine themselves doing it in real time. Your real time diagnostics are your best videos in my opinion. Yeah they are a bit longer because thinking time is included but when you think out loud and share that stream of consciousness with the student; it is just as important for their education. You aren't just teaching what to do but how to think and you expressing those thoughts out loud are invaluable to your students. Excellent video series. Bravo.

[@ScannerDanner]

Thanks so much. Really appreciate that. It's comments like yours that make me want to keep doing this.

[@wodeyaeric5351]

Danner u r a generous and honest man. What a wealth of knowledge!!!

[@emenem6131]

very good teacher...many people would not admit to the "mistakes" made while troubleshooting. when I was learning to repair industrial machines (automated lathes, presses, robots, grinders, etc), besides the sore rear from the bosses applying way too much pressure reminding me how long production had been down, I learned the most from the mistakes that I made. those stuck firm in my memory. good videos

[@ScannerDanner]

thank you!

[@Reaper1947]

As a non mechanic I go a little nuts some times watching , but slowly but surely I'm catching on a bit . Thanks for the effort . TheReaper!

[@pitchforkpeasant6219]

Reminds us that we’re all human and make mistakes. Part of personal accountability in admitting to them. An admirable trait imho. 👍😁👍

[@frank289frank]

Just subscribed to you after watching many of your videos. I was a ford technician for fifteen years before getting hurt on the job. It's refreshing to watch someone who not only knows his trade but also someone who obviously enjoys teaching it. You don't hide behind editing like some people do. You teach as you yourself learn what the problem is. You don't act as though you know everything. Which is refreshing to see. Thank you for your videos. They are enjoyable and educational to watch

[@ScannerDanner]

Thank you Frank!

[@harryjones8275]

Interesting case study. One of my previous jobs was to teach the GM CAMS computer to the techs in So. CA . Although the system is antiquated by today s standards the process is the same. The fact that the Techs did not understand the systems in vehicles is the root cause for not fixing it right the first time. It is very worthwhile to go to the scrap yard and to get the plugs for the most common cars and make them as pigtails and document and label them as to what they are. This saves the time to look back into the computer electrically and prevents having to rip the engine management system apart to test. Great that you show the guys cause and effect on various items like vacuum leaks. T-pins for looking into the plugs is also a great lesson.

[@sparkfixer9102]

Excellent class as usual! I really enjoy your style of teaching/learning/diagnosing a problem all the way through to the end and then going back through and PROVING what you've found. You are truly a professional that cares about your diagnosis and your students ability to grasp what your trying to teach them. I hope your students appreciate what they have in your class as it is rare. Keep up the fantastic job! Look forward to all of your teachings. Thank you and God bless you and yours.

[@ScannerDannerPremium]

Thanks so much my friend. God bless you too

[@ozzstars_cars]

Fantastic, both Parts 1 and 2 on this repair. The car probably didn't need a second junkyard engine from the beginning. It's annoying that mechanics don't take the time to properly diagnose the problem and just start throwing parts at a problem without any evidence of failure. Great job Paul as always. Your enthusiasm for solving these types of problems comes across loud and clear. You take pride in your work to be one of the best!

[@ماجكموزجوني]

I totally agree. We may say they just too lazy BUT in other way, they haven't got a clue. This man is A PROPER MECHANIC LEFT ON THIS PLANET

[@stevensapyak7971]

11.1.14. Paul, my (Industrial) Journeyman electrician I apprenticed under always said "Test,don't guess!" To your students, with classroom & field exposure, they will have all the confidence to trouble shoot any situation that comes their way! A methodical approach is the only way to tackle them. I'm with you, detective type work is the most rewarding, anyone can guess & swap parts. To prove the cause to the underlying problem is the only way to build knowledge. I'm not an auto tech but I enjoy watching your passion for the trade, makes me feel like my "hungry days" when I was in school!

[@ScannerDanner]

Thanks Steven!

[@rustynuckles3662]

Excellent detective work ! Now plug the AC pressure switch back in and ship it !

[@miguelalvarado2343]

Dan the man, this Miguel an xstudent who followed you for a time, i have a 2009 nissan rogue i was driving lites on dash came on, car staRted shaking then check engine lite had warning fix system soon, where 2 wires burnted from the horn circuit , harnes fixed, wont start just crsnks was a green wire against another wire all repaired, now the car cranks but wont start, checked for fuel ok, and no spark at the plugs, just cranks, if its the computers i want to make sure money wise as you've said 5vote check of parts, will check 2moro, still have books you sent me, great stuff, guy, good day from old timer to best detail oriented electrical teacher,

[@PicassoPete]

As far as I can see is that the vehicle’s computer only lets you see what the designers want you to see. There are electronic systems that inbuilt to ‘Keep You Running’ at all costs if possible. This is shown by the engine running without the crank sensor connected. The vehicle’s computer, in order to ‘Keep You Running/Going’ has searched its programming to obtain a signal from somewhere possibly constructing one from the cam sensor. These things I’ve seen on other cars that verifies my findings. Similar things are resistors in the ECU to let it know if a sensor or an item is connected or not. Great video Paul. On the flip side It’s frightening to realise that there are much deeper levels of programming that these designers have implemented that we are not privy to.. If there wasn’t these deeper levels of programming then the engine would have just NOT RUN and thus finding the disconnected crank sensor would have been easier. Great fun these detective series Paul. I wonder how many of us have bald spots on our heads with all the head scratching.. LoL. Regards Peter A.

[@dockingtroll6801]

Still great videos in 2021.. Thx for doing it, and may I just say "This is fun, no? I think its fun", well you are a fortunate man, doing what you find fun makes an enjoyable workday.. Cudos to you...

[@kylefanning1126]

I will have to say I'm a fairly good mechanic myself, but man I'm learning a lot watching your stuff you're a damn good teacher I took auto mechanics at a little mayo vocational School here in Eastern Kentucky years ago wish we would have had teachers like you back then LOL

[@timwheeler1503]

SD is the best teacher for diagnosing problems that I have found, SD also keeps adding knowledge to this field all the time. He has a massive amount of knowledge and understanding of circuit design and all around troubleshooting. SD is the GOAT of auto repair.

[@prmayner]

every time I need to be put in a good mood and forget about my little bullcorn world for a second I watch this video when you say "the crank sensors not plugged in" I laugh so darn hard i almost piss my pants, i can't stop, i wish i would have been in your class that day that was totally awesome. i think about how many times i've been in the same situation, but it's so funny i guess cause you talk about it for so long and are as sure as your standing there that the ckp is working, just like we all would do. you played it perfectly, naturally that's what made it so darn hilarious to me. your the best brother, glad i know you. God Bless.

[@pitchforkpeasant6219]

Read your comment the exact moment paul said it. Timing👍👍😁

[@mmichaeldonavon]

I was with you every step of the way! Learned more from you, once again. Just a quick note: I was sure I had "another" power steering problem with my 07 Lacrosse. Saw a fairly clear liquid on the garage floor, and it had an (like) oily base. Said, damn that new 6 month old PS Pump is leaking. PS reservoir was at Max (?) I just knew the slight leak was from the PS system. THEN, I saw a couple of droplets coming off the chassis - with my little light, they looked GREEN! Damn, that's coolant! Took our a sample of the coolant from the coolant overflow and put it on the garage floor - same! So tomorrow, I'll remove the overflow and go from there. You have taught me diligence and attention to detail. Troubleshoot with your eyes first! - for that I thank you.

[@ماجكموزجوني]

32:35 I remember on your 1st video of this car at 24:25 you started to find Cam Sensor and you pulled out to test the voltage. How did the dealer missed that cable unplugged and came out with CAMCHAIN FAULT is beyond belief. Well done you dug it out and finally got the bottom end. How do you do it? You just open our eyes. I'm not even a mechanic but I learn a lot from you. Thank you and keep going mate. Crowd funds to keep your channel up and running? I will definitely donate. You are just awesome. Thanks

[@ScannerDanner]

Thanks so much man, I really appreciate it. Since I have a paid membership on my website ($11/month) I don't ask for crowd funding as this sort of already is that. The difference is that there is a HUGE benefit to you guys. I currently have over 500 videos with half of them filmed in my classroom. Hope to see you there! I also have non recurring subscription options too btw Thanks again!

[@ماجكموزجوني]

@@ScannerDanner I've been on more than 3 video already tonight and I have to repeat them to make sure they sink in. Tiny little wires which broken due to vibration cause the car NOT to start. If you take to the garage, they come up with one reason... Engine is dead. Needs engine replacement. But here... Wow. Dead engine are back on the road with just broken wire fixed. I'm speechless... Thanks mate

[@malisa696]

Hello mister Danner. I had a similar situation with a Mitsubishi with a wrong connected positive and negative post. The powers and grounds for the ECU was on the starter and it was connected wrong, but in this case the engine computer was not damage. Only can not start the engine. It crank but no start. Great video.. I looked and the part 1.

[@IamReadyToRock]

The Master League, is Here, gracias, un saludo desde Perú

[@arttorres3612]

I think detective work is fun too i really enjoy your videos

[@JOHNPHUFNAGEL]

I thought in the beginning the engine was bad. What a surprise.. Cant wait for the programming

[@JoelAutomotiveInaction]

that's why I am addict to your videos, because there is always some thing to learn thank you Paul for taking the time tho share this valuable information

[@ScannerDannerPremium]

Thanks Joel!

[@ghost37666]

32:35 that was much fun to watch, and students' reaction was priceless.

[@oldschool454]

PAUL, as always a great vidio. as for the gm tech we dont know all the circumstances. after hearing the first start and run that sounded like out of timing or cylinder hydraulicing i would have been afraid to do a restart without pulling the plugs if the money for a new engine could possibly come out of my pocket. but whoever destoyed airbox should be ashamed. you are a credit to automotive repair industry . GOD BLESS and thanks for great vidios.

[@ScannerDanner]

Thanks my friend. May God bless you too.

[@janetkennedy9374]

ScannerDanner

[@GaryBritton336]

One thing I'd like to add... at 23:00 look at the CKP ACTV CNTR and compare that to the INT CMP ACTV COUNTS, 0 compared to 107... that is the tip off that the CKP SENSOR RPM is a substituted value. CKP ACTV CNTR stays at 0 while the cam sensor continues to count up, reset and count up again. What I am unsure about is why the exhaust cam counter stays at zero, but the ECU seems to be ok with that. At any rate, I think this is how you can tell if the rpm signal is actually coming from CKP or is a sub value.

[@ScannerDanner]

thanks Gary. I'll revisit the video when I can and look at those PIDs again

[@dondesnoo1771]

ScannerDanner I am retired tv repairman have done some auto diagnosis un believable what you need to know .my advice not replace engines on newer vehicles . someone i know kept changing sensors for a sulphated battery chrrysler van after engine change

[@Nomadman4life]

I had to subscribe after watching your part 1 and 2 . Just an awesome teacher and mechanic . Learned so much .. great job keep it going man.

[@dailyit5674]

Absolutely fantastic!Love the way you explain its very easy to understand. Similar nightmare with ckp sensor ,would hard start and would stall in middle, turned out one of the 3 wires going to the connector were almost gone barely had any copper left,replacing it fixed the issue.

[@ScannerDanner]

Thanks for sharing!

[@richardorzal3670]

its a great video..i feel like iam part of the class while watching this.thank you sir paul iam always looking forward for your new video. keep it up god bless you sir.

[@ScannerDannerPremium]

Thanks for the feedback Richard. And may God bless you too

[@PineHollowAutoDiagnostics]

Another good one, Paul! That initial cold crank sounded really bad...do you think the cylinders were fuel-washed and initial compression was low? After getting the CKP signal trouble code, a visual inspection of the connector would be a good starting point in the field, especially since it's very accessible. At 23:19 looking at CKP and CMP rpms, the graphs and live readings are IDENTICAL...that screams "substituted value" for sure. Love the "live" recordings!

[@jasoneyes01]

Check for AC voltage on the charge circuit. Hooking a ECM wrong or shorting things in a vehicle will burnout diodes in the alternator blowing the rectifier. The AC voltage riding on the DC will cause these kind of problems along with a blown ECM.

[@chadcohoon8867]

it was unpluged as well bro i am sure of it just like the crank sensor

[@peterbeharry8178]

Jason Burt

[@scottparent9705]

Paul Great video. Not on the defense of Dealer Tech but I have seen a cam sensor engine code kept appearing with a timing belt being off one tooth and the car ran good. It was a Camry.

[@ScannerDanner]

For sure and I started to get on this unknown guy at first in the video unfairly. He was not being paid to troubleshoot the problem and probably just took a guess. My issue would have been if they actually followed through on a timing chain repair without doing tests to prove it. I see this WAY too often. To many parts changers in my field.

[@inthelandofmilkandhoney457]

Excellent work Scanner 👍👍👍

[@MikeMotto]

OK. You have me hooked! I bought your paper book and really like the videos! guess next will be joining the +ScannerDanner premium

[@ScannerDannerPremium]

Mike. I promise you will not be disappointed. It will make the pages of my book come alive and then some. Ask around, you will find no complaints. Thanks so much!

[@IsshmanGarcia]

+ScannerDanner Premium +1

[@GaryBritton336]

I agree wholeheartedly! I subscribed to the Premium channel and within days bought the book and was SO glad that I did... I've been working on cars since I was 12 years old (in 1972) and I have never learned so much so fast, especially from one person!

[@revbess]

Wow you might have answered a question I was wondering about my car and why I have been searching the net about my issues, when you said a bad ground would make the signal wire up it's voltage. This may be the reason my coil packs are burning up. Normal signal is .50 and the 3 that's trying to burn up measured 3.43v with ignition on. Your approach and the time you take and how you teach I give it 5 stars sir I need this class myself at 35 yrs old. I too am trying to diagnose a 04 g35 6mt that's running on 3 coils because it's trying to burn the other 3 with the key in on position.

[@ScannerDanner]

G35, is that a Lexus? So Toyota electrical system and your asking me about the coils. Are they 4 wire coils? And which wire are you reading 3.4v with the key on? The trigger signal? If so, no wonder they are burning up

[@revbess]

@@ScannerDanner this is. 2004 infiniti g35 6 speed and they are 3 wire coils and yes the trigger signal not the 12v.

[@ScannerDanner]

@@revbess okay, on which wire are you reading the constant 3 .43 volts on? Is it the coil trigger wire coming from the ECM?

[@revbess]

@@ScannerDanner Yes the coil trigger(signal) from ecm. To coils 123(ecu pins 61,62,81.

[@ScannerDanner]

@@revbess well this is certainly why you are burning up coils. Other than some wiring harness short on those three circuits, you may have a bad engine computer. You will need to do your wiring checks at the ECM with it plugged in and unplugged. If you still see those same voltage levels unplugged, it is NOT the computer and you have a harness short.

[@miltonscornertobylove5068]

Watched part 1 and 2. awesome 👏! Our Honda dealership has high standard ratings cus if a car comes in like that in better drive out in good running conditions.!

[@Shwaard]

that is cool body keep up the good work.... for your student how lucky they are ... they learn a lot to the master technician.....God bless you....

[@Etiennevisvang]

Saved an old Ford Fiesta from watching your videos. Blow your trumpet hard. I will even buy it for you. Bravo.

[@jhauna1]

Hey Paul great stuff as usual, the dealer should have done that crank learn procedure (P0315) due to the fact that they programmed a new computer... This needs to be done when ever a you replace the PCM, Crank Sensor or anything that disturbs the reluctor.

[@frankguerra3314]

Omg I am in shock about this video.i been following you for a good min( while) an I never seen that before about the crank..ty for your video..one thing.im not surprised what the dealership would say..

[@contagiousFX]

About the chevy tech calling it a timing chain, I think he was just shot gunning it. At the beginning of the video it did sounded like it had bad compression when you guys cranked the car.

[@Mad4Tracks]

Great video Paul, I loved it. @24:30 I immediately thougth of a substituted value, I would have tested that by unplugging the CKP sensor. @32:35 really made me laugh after that :)

[@Discretesignals]

You and your class did a wonderful job troubleshooting this. Knowing this engine runs without crank sensor input is gold information for us techs out there. Sometimes things that you were taught in the past no longer apply. Just curious, but what happened to the previous engines?

[@ScannerDanner]

Thank you! The first engine the chain went and bent the valves, the second one was the wrong one from the junk yard.

[@aminsutrisno3452]

Recomended banget channel untuk pembelajaran mekanik's

[@ScannerDanner]

Thank you!

[@James-fs4rn]

👍 great video series! Thanks so much for sharing. That was a real eye opener.

[@blackericdenice]

I bought an 88 Ford Probe from an auction and it would only run at 2000 rpm with the air flow meter unplug. I replace the air flow meter with a low cost use unit. The car ran the same way. I remove the 2nd afm and as I was removing it. I notice an intake baffle had split apart. I remove this baffle and blocked up the hole where it fit to the intake. The car now idle normal.

[@ScannerDanner]

Good catch!

[@ecwurban]

This is a great video for the effects of leaks between the MAF and the throttle plate. Also take a look at 21:30. There is a MAF pid that shows 2.04gm/Sec as well as an AIRFLOW pid that reads 3.99gm/Sec. I'm guessing that the AIRFLOW pid is a calculated value based off the MAP sensor. It's too bad more vehicles didn't have these two pids as that would be an awesome way to point out these kinds of leaks. Although it's really disappointing that the computer couldn't flag a code for that. That's a big discrepancy between the MAF and MAP...

[@michaelfrancis3261]

was the computer change? wow this is one for the books

[@rrmech11]

Great vid Danner. Having to clear codes and watching the computer run in default mode giving crazy pids. Show us the new reprogramming pass thru tool and a vid

[@shauno3697]

I don't know if I heard it well enough, but it did sound like the engine initially clattered some on the first start. I might forgive the GM tech if that's what he/she heard when they first tried to start it. My thought is that there's no telling how long the engine sat dormant in the yard before it got installed into that car. With that said, who's to say the tech didn't hear a timing chain slap because that tensioner hasn't had oil pressure in it in years? One of my frustrations as a tech is never getting the whole story from a customer. So if I didn't know that engine was already replaced, I might have expressed a concern for the chain as a possibility. With regard to never getting the whole story, you also don't always get the truth in these back and forth kind of stories between shop A and shop B. (In your case, GM dealer and Rosedale.) I've had plenty of scenarios where I or another tech in the shop suggested there might be a bad part in a car and some diag labor would be required to confirm it. Then we later get a complaint from a customer because, allegedly, we at shop A said a part was bad that wasn't because shop B said otherwise. The customer never told shop B I said it MIGHT be a bad part and TESTING REQUIRED to confirm. It went from a possible bad part to just being a bad part because of a careless statement by the customer. This video by itself gives some credentials to my point. Paul, you said you were told the car had a no start complaint a minute and a half in. Then about seven minutes in, we learn about a timing chain concern. Finally, about ten and a half minutes in, we hear that the GM tech didn't say NO start, he said DON'T start. It's not to say that you couldn't be right about the GM tech, but you could easily be wrong too.

[@bryankubishta5931]

A/C system issue is probably because the system was never charged... there's an AC line connection doesn't even have the nut holding it together. Visible often in the video, and a close-up of it when you show the crank sensor plug up close.

[@clarkgarber5495]

I don't think he ever plugged it back in.

[@roger2641]

Scanner you asked the question as why did Chevy dealer say after computer install, do not try to crank, Chevy guy diagnosed as timing chain, some engines can get valve damage if trying to crank, I have heard.

[@reynoldfloresluna8896]

AMIGO EXCELENTE TU VIDEO DIAGNÓSTICO PROFESIONAL PREG DONDE CONSIGO TU LIBRO GRACIAS AYUDA INFORMACION

[@mikewithers7685]

Nice video, Was the car attempting to relearn when you first cranked it ? Even though It just arrived from the dealer ? Was the poor running due to the unplugged CKP ? weird. Keep the videos coming, even though the subject matter is the same the outcome for repair is always different. Your videos never become boring, by the way neither is car repair !!!!

[@nserekotonny6957]

Big up's thanks for yo automotive lectures.

[@AntonioClaudioMichael]

I bet the engine speed data pid takes the rpm off the Cam signal not the Crank signal @ScannerDanner

[@clems6989]

Dont ya love jobs where 2 or 3 people have already messed with it...lol This was a good one.....Great Job.

[@paulgigas]

Other than the incompetence of the initial engine installation, it boggles the mind that one bad sensor could cause a no crank condition without scanner communication. Obviously, therefore it could have been a short anywhere in the system. But don't shorts usually blow certain fuses, though the car continues to run funny? Some fuses were not working, but did not appear to be blown. Then it would not be a guess to assume the computer was toast. Right? If a fuse directly related to the computer is not blown but also not carrying juice, how could it be other than the computer? You hit upon that at the beginning almost yet continued looking for shorts. What am I missing? Great work, and thanks for sharing this video with everyone.

[@LALIB86]

Can you maybe help me? You seem to be experienced in such kind of issues. (regarding your comment). I have a 2006 Kia picanto 1.1 By turning on the starting key, the check light doesnt comes. I have also no connection between my Delphi Diagnostic software and my OBD Socket, better the ECU. What I have done: when i am put a cable from the battery of the car, suddenly everything is different. I have taken a separate cable from the (+) of the battery to the Pin 16 of the OBD Socket, then the check light comes. From now on, I can also connect via my OBD and my laptop and my Delphi tool to the engine. So, whats the problem with this car? "Ground problem" or "(+) problem"? Do somebody know, where I can find the ECU by Kia Picanto 2006 1.1??

[@GaryBritton336]

Paul, it wasn't the CKP sensor being unplugged that caused the no start/no crank and no communication; that was caused by the ECU getting fried by the grounds inadvertently being connected to the starter. Hopefully I understood you correctly...

[@mikedevv1]

Love these troubleshooting videos!!

[@jimforsyth2.]

You could have pulled pins in the pcm connector for the ref signal and check 5 volt right at the computer pins . Before all the other disconnects. Or is there a reason you wouldn't want to do that . I was thinking the pcm was right there and that would remove all the wires and sensors from the circuits

[@olusegunsogbesan3789]

You're a lovely teacher.

[@jrneff9773]

thank you for this case study it applys to ever car i know of omg your the man

[@rodx5571]

Ahhh, the detective work. my fav part of the job.

[@ecb8252000]

I have a cavalier and my Pcv valve is lice that too. The cavalier also uses an ecotec 2,2.

[@SLIvista]

i wish i could bring my car to you, you could have great case study on my 06 maxima. i think the 02 sensors are shot.

[@markcookson3519]

that was fun to hear the sensor wiring plug was disconnected ! and the ecu will inject its own ref for crank sensor after fail start first few seconds would of been good to scope directly onto the sensor with loom unplugged

[@ScannerDanner]

To be clear, the only substation was with the data. If you were to measure the actual crank signal, there would have been none with it unplugged. Just wanted to make sure that part was clear. Thanks!

[@toyotatechMDT]

That made me laugh! Great video Paul. You can be forgiven for leaving reference circuit sensors unplugged as you were expecting the car back! Sounds like a good class of students.

[@ScannerDanner]

Thanks friend. It really is a great class. I told them all on Friday I was going to fail them all so they have to repeat the class :) This way I can keep them.

[@vincescalise4821]

very informative, great videos , you are an amazing teacher, I sincerely hope your Mother is doing well Happy EASTER

[@AntonioClaudioMichael]

Nice case study

[@JD-526]

This guy is amazing...part one and two of this video was very insightfull. These videos of his will teach you how not to become a PARTS HOUND. I have seen this so many time with mechanics and I have a bucket of what was supposed to be bad parts that where taken out of my 2003, 2500HD silverado by the previouse owner. thanks to your videos I have found out how to field test these items, only to find out that the removed parts were not bad at all. so watch, like, And share these videos. also hire a qualified person and not talking about the person at the parts counter. ALSO be aware of those Auto parts stores that will come out to the parking lot and code read you check engine light and sell you a part that you don't need or is not bad at all. not to say it's not benificial but I do get a laugh once in a while.

[@revolutionzerox]

I totally love these videos. at some point soon I'm hoping to get the ebook you have. I see your site is down hopefully not for long? I don't find the vids long at all. I watch them on my 56inch at home. honestly better than tv and my gf always comments how I'm always watching your vids. please keep them coming.

[@ScannerDanner]

Hopefully we will have it fixed tomorrow. I apologize for the inconvenience. Thanks so much for you comments and support!

[@AntonioClaudioMichael]

The way it sounded on the first start at the beginning of the video I would have also said Timing Chain to be honest it sounded horrible like the chain was slapping possible that is what the dealer tech heard may never have ran good for the dealer tech @ScannerDanner

[@AntonioClaudioMichael]

Awww so the crank signal is the Tac rpm Signal figured the tac ran off the cam or the crank I don't think the timing chain is the issue it's running way to smooth for timing chain to be a problem the cam sensor must of been substituting the crank pid data @ScannerDanner

[@alfredojimenez8144]

It’s a good video Nice teaching keep up the great work

[@ericsmith1066]

Brilliant walk through. ..

[@jamiegermaine5395]

Plug the AC compressor back in😎

[@simclardy1]

The pressure sensor. 😎

[@2324E.M.S.]

Thanks for this video it is awsome as always.. But i am super exited that you are gonna star programming... I start doing mobil services to shops and programming as well i hope to learn more about this as well thanks.

[@dronedbr]

Awesome instruction once again. Learned a thing ot two.

[@ScannerDanner]

+Dan R thanks man

[@gordylocks]

This is some good stuff! I really like hunting down these types of problems at my work. The really tough problems come up sometimes when i dont have wiring diagrams then i have to fall back on the basics. Keep up the awesome work cause its a great industry to get in, especially for electrical/electronic/computer technicians!!!

[@jesusmalagon4336]

Thanks Paul Danner

[@biggysground]

Nice vid here thanks for sharing real world testing.

[@gtautomotive22]

Excellent video. Thanks

[@collinsmuhanuzi593]

I have liked ure diagnosing approach (new Hyundai tech.services ltd ug.A.)

[@benzman113]

Wow you are persistent with your diags & you get there from it, you know how to use your verus as well i watch all your uploads mega.

[@jamesrossmotors]

Awesome Paul, just awesome

[@hassandallal6314]

Very gd explained lesson man thanks

[@davesales3129]

I agree. Incorrect data and or operation is challenging. It can be fun.

[@contagiousFX]

"The crank sensor is not plugged in" CLASSIC

[@microfarmers]

Awesome video!

[@jameswinnaing7714]

VERY GOOD LESSON THANK YOU

[@LloydSpence-vf2qz]

Great job well done.

[@carlosfavela9616]

danner muy buenos tus videos por lo menos ami me sirven de mucho sigue asi abemos gente que aprendemos de ti soy de mexico pero ay le entiendo un poco al video

[@gvvq-pi5ml]

Great Stuff Paul...........Fred uk

[@billyshort612]

Hey,,,love your informative vidios...can u tell me why i have no current going to my fuel relay on a 1995gmc truck...there are five terminals there and none of them are hot with the key on..any thoughts?

[@Mahigeer1]

A very informative lesson as usual. Is it my eyes, or at frame 33:44 there are only two wires coming out of the crank sensor in the electrical diagram? It shows 1> Lt brown 2>PPL 3>YELL. However, the PPL and YELL are drawn as one. Obviously the number of wires and the colors match the ones on the engine. Thus, could this be a wrong diagram?