2002 Dodge Truck Will Not Restart When Hot (P0340)

2002 Dodge Truck Will Not Restart When Hot (P0340)

hey guys scanner Danner here with my son Caleb behind the camera Thank You Kayla for being here today he skipped school today to come film with me which is awesome actually not but whatever you know I’m gonna get all kinds of crap for saying that Caleb I should have just not said that at all but it is what it is I just needed him today but unfortunately we’re outside in the cold again it’s 23 degrees I know some of you are like 23 that’s not cold it is when you’re filming camera stuff doesn’t like cold weather but anyway we’re gonna try to do this one quickly it’s a 2002 Dodge truck that the customer’s complaint is he can drive it all day long but when he shuts it off it will not restart when it’s hot and that’s what we’re dealing with right now the customer literally just dropped it off and I’ll let you listen [Applause] so it’s a no start I have not hooked the scan tool up yet to it well I did but I didn’t read any of the data yet there’s a couple of things we can start with the one would be look at the tachometer and see if it bounces another one would be eyeball the check engine light things like that I’m thinking of what this thing is doing and based on the symptoms the fact that it continues to run until he shuts it off is an indication of most likely a cam sensor fault and I say that Caleb because the crank gear does not have a sync notch in it and it needs the cam sensor to coordinate the crank during startup and once the engines running it really doesn’t need the cam signal anymore so my money is when we have a cam sensor fault code in memory here but let’s look at the tachometer real quick Caleb and the check engine light then we’ll look at scan data all right so bottom left this thing’s really dusty work truck bottom left the check engine light is on and then watch the tach we want to see if this bounces when we crank it there’s no tach pounce at all and what that means in general and not always there are variables what that means is this is not receiving an RPM signal so the computer is not receiving an RPM signal in the tach not bouncing is an indication of that I think we’re on the right track so let’s identify this vehicle so 2002 so symptom wise Caleb’s that makes sense he drives it all day long no problem shuts it off it won’t restart so in general you’re not thinking fuel pump because a fuel pump is involved all the time right running cranking whatever the one that’s involved cranking only is the cam to synchronize the crank and they’re not all like that some systems you can actually run a vehicle without a cam sensor and you know you can have a cam sensor fault and the vehicle runs but other ones are not you need both cam and crank for start-up on some of these and I believe this one does all right so this is a five nine I don’t know if it’s California emissions or not I need to check the Vica label under the hood we have we have a window here when this thing cools down it’s gonna start how do you know if it’s California emissions or not it would say and here vehicle conforms to epa regulations applicable to two it would say it right in here if this was a california emission vehicle so it is not so all others automatic with AC my money is on a cam sensor fault code p0 340 no km signal at PCM p 1391 intermittent loss of cam or crank and then p zero one three eight which is a one two o2 sensor shorted to voltage so that’s a downstream o2 fault it has nothing to do with this know start okay so totally separate we’re gonna attack this cam sensor issue here okay yeah common replace parts this is cool it’s it this is for you don’t have to zoom the camera on will be able to see that in the edits the common replace parts that’s kind of cool from a standpoint of if you’re not familiar with the system and you want an idea of what’s been been replaced and these would be from snap-on users this is not like a Google user parts replace so and crank if you notice you can get that you can get false cam sensor codes from a faulty crank sensor on this alright so no cam signal at the PCM p0 340 we can look at some data on this one it’s helpful to know the systems are working on this being an older Dodge truck I know these like the back of my hand which makes it nice because it’s cold out here we should be able to get done with this one quick as long as I can keep it on a no start I really need to maybe stop teaching a little bit and let’s get to the test while it’s a no start but what well I have it I have na on everything on the scan tool yeah exactly what is that why is everything na come on are you kidding me I got no data at all like I just updated this scan tool to this seems this is this is weird they changed some things on me here okay we have no data to go by let’s see if I have the ability to do functional tests something that we can hear feel pump just want to see if I have other areas in the engine management system that I can control I don’t have data for whatever reason but I’m not gonna let that sway me I have a fear here that this is going to end up starting on us through this process yes don’t have no doubt of there but let’s listen hear any clicking hmm there’s things like really acting funny I mean I can read codes from it alright let’s just get a scope reading of the camp signal so the distributors in the back I put my hand back there that pulled this connector out that’s it’s a three wire connector for the cam signal and it’s nice to know your Chrysler’s that middle wire right there is black with a blue that’s sensor ground that looks like violet white at the top I’m not totally sure that’d be my 5 volt ref and then the tan with a yellow is the cam signal and the only reason I would know those colors is in in this year range they all used the same colors the cam sensor and crank sensor wire colors were the same for many many different model Chrysler Dodge vehicle so kind of nice to know your systems again I’m going right after my signal wire hopefully things these weather packed seals are completely dry rotted it’s like bending my pin that’s not cool I cannot back probe that at all it is that freaking dry rotted hot sucks got fuel line right here too I don’t want to get too aggressive love this tool love this tool so we got three texts to do signal reference and ground this will be my signal sweet all right got five volts on this wire Pete can you crank that for me glad you’re here thank you for coming at the right time no signal at all okay we’re having some technical difficulties with the scan tool right now so I just wanted to explain something real quick about this 5 volt pull down design so on this on this setup is my PCM we have a signal wire that comes to the cam sensor and this is a transistor that’s inside of here Caleb and it switches to in to ground on this design this is a pull down design internal to the computer would be a five volt signal reference the computer monitors after this fixed resistor and when this switch is off it reads 5 volts on this wire it will read 5 in that location when this switch transistor turns on switches to ground which grounds this whole circuit it pulls this down to 0 so it is a 5 0 5 0 5 0 square wave what makes this switch turn on and off we need to have a power there’s going to be a power feed to this sensor from supplied from the engine computer and then there will also be a sensor ground a negative I guess striped paper is probably not the best for drawing here but especially blue-on-blue but power ground for this thing to work and then there are windows that come past this Caleb in the distributor and as the distributor turns those windows are what trigger the base circuit of this transistor so there’s circuitry in here alright it’s magic how it works that creates voltage switches the base of the transistor on based on the windows that’s what makes our cam signal this is a 5 volt pulldown design this would be chapter 2 material in my book and in my lectures for those of you that want more information on this chapter 2 is where to go and also my ignition inputs chapter 21 we can learn more about this stuff so why is this significant to us right now in troubleshooting I’m measuring right here at the sensor I’m reading 5 volts fixed at 5 volts so what’s that tell me about the integrity of my signal wire from computer to sensor the fact that I’m reading 5 in that location tells me it’s good right my computer is good ah shoot my wiring is good my 5 volt reference is good and so what I need to do before I condemn this distributor I need to check my power and my ground circuits on the sensor to make sure it has what it needs to work a final one would be you’d want to make sure that the distributor rotates because you can have a broken timing chain that makes the distributor not turn and that can set a camp sensor code but the thing about a chain issue is it’s not going to be intermittent so I’m not worried about a chain I’m not worried about the rotation of the distributor thankfully because I don’t have to take that cap off but I do need to check my power and ground on the sensor before I condemn the sensor the nice thing about pull down design circuits that 5 volts again tells me I’m good here there are pull-up design circuits where the sensor does not go to ground and it goes to the source and that changes direction as far as what you take in identifying wiring circuit integrity that’s not what we’re doing here this is not a pull-up design this is pulled down and I know my circuits fine by simple voltage measurement okay right back to the car power and ground check alright I apologize for the interruption there we had some issues with some equipment we should be back up and running now what you guys are looking at is the steady 5 volts on this signal why and I’m gonna crank it again and we’ll look for a square wave of Calum and it needs your eye because well maybe I can do both alright cranking it no square wave at all one thing you want to do when you’re new to lab scope usage is you want to increase your time base when you have fast signals to see if we have any data there we might be missing it it might be off the screen mile up my newest lab scope series Caleb’s learning yeah and that is on the premium channel guys I have a new lab scope series that I think’s really good Caleb’s learning it no signal yeah so the longer time base for me confirmed I wasn’t missing that and the fact that I have a flatline v Caleb would mean I don’t want to set a trigger on this because I don’t know my levels yet yeah triggers are only set when you know your min max levels and the fact I have a flatline you would never want to set a trigger on that so without a trigger that means the Scopes not coordinated with the signal and you could be missing it it could be off the screen whenever it occurs and that’s why you increase your time base so you see more of it so I’m confident I have no square wave here two more checks power and ground if you have a question you’re gonna say good alright so I’m just gonna crawl back under there again it sucks that we don’t have scan data on this but this is fine what we’re doing now the fact that this sensor ground is a shared circuit between the rest of the sensors the chances of it having a fault they’re slim to none and be honest with you the same with the reference the 5 volt ref is the same way in that it’s shared between all the sensors ok that should be my ground circuit and we’re looking for point 1 or less the only thing I’m gonna do here is change my voltage scale to a lower number and let’s get you guys a digital shot here – it’s got some fluctuations there but let’s see what it looks like cranking this will be a little bit higher voltage cranking whoa okay that’s okay that’s that was like 200 millivolts that was like a 200 millivolt line and some of you are gonna look at that and be like man that ground looks bad it’s not what we’re doing with the block is we’re dumping all kinds of current flow to the engine block and the computer grounds go to the engine block and all of your ground voltages will be elevated when you’re cranking so that point one or less of a voltage reading on a sensor ground is one that’s a key on engine off or run state not cranking so remember that cranking you’re gonna have higher voltage I’m fine with that ground it is weird that there’s some oscillations in there but I’m not concerned about that that’s not my issue that ground is fine that sensor should be functioning and I did it in a loaded state cranking let’s see what this it’s technically loaded right now without even cranking it but it’s always better to do it when it’s active or loaded which is why I cranked it over I know this one will be the the 5 volt ref so we use a 5 volt signal and we use a 5 volt ref the older ones would use a 9 volt older Chrysler’s used a 9 volt reference on the km and crank I believe this one’s 5 yes so steady 5 volts this would be my sensor power feed Caleb 5 volts crank it over no problem this needs a cam sensor without a doubt I switched back to the signal good you can ask me your question we’ll start whenever that’s when it’s hot yep yep because these Hall effect sensors which is what this is typically will fail with heat and the answer would lie in the answer would lie in this area where I drew all the squiggly yeah there’s some variable and there’s some small electronic circuitry that’s involved with this yeah that fail that will fail with heat and vibration and so the answer is internal internal to this that Suns right on that camera lense so the answer is internal to the Hall effect is why when it’s warm it’s shutting down it’s very common and what do you do for intermittence like this if you can’t recreate it and let’s say you have a cam sensor Fault in memory it was a common practice to start the car close the hood get the under hood temperature hot and then you’d go to that Hall effect sensor and you’d smack on it with something metallic and you could make it fail and that’s how you could prove your fault I think at this point it would be really cool for you guys to see this that when this cools back off we’ll have a cam signal here and I think we’ll do that and that’ll save you and I from having to come back and show them the after whenever this is fixed we’ll just wait till this cools down and we’ll get a final shot of the cam signal with it running with the vehicle running and then in the meantime maybe I can reboot my verus and see if we can get data back I don’t know why it could just be this car but this thing is acting funny since this update this 18 to update I just did all right so let’s let’s power down and then we’ll let this cool off and we’ll come back to it all right so we are coming back to you guys now we still don’t have a this vehicle starting but we had a scan tool issue there was a firmware update that I skipped the last time and after I did this firmware update I now have data available to me so this was a scan tool issue as far as why we didn’t have data because it did properly identify the vehicle we were able to read codes but we were able to read data and the nice thing about this now Caleb is I can I can show you a little bit more with the cam and crank signals on on the scan tool which eliminate we’re not eliminated but they give you some additional checks that you can do let me just get my data parameter set up looking at cam crank counts I got a no calm when I’m cranking that’s kind of typical to I can’t even show you that check soon as I crank it it goes no calm well that’s stupid why would you do that I was gonna show you the cam counts aren’t changing and rpm isn’t there but the crank count changes I can see it’s now at 51 my crank count it holds the last one in memory but it’s okay here we go crank cow you see my crank counter I pause this data will go back so what I’m looking at is cam and crank count so that’s just like the number of windows that are going past the Hall effect right and so as I’m cranking it watch oh this is through a replay see the see the crank count increase in nothing with engine rpm and nothing on the cam so I know that there are those out there that are like hey Dan why don’t you show us what the crank signal looks like well you saw how much of a pain it was to get to the cam and I just didn’t feel like it and now that I showed you on the scan tool we have a crank count our crank signal is fine it’s cam only 100 percent certainty this needs a cam sensor again our final shot is gonna be I’ll show you what that waveform looks like whenever this thing starts and runs and we’ll show you these counters one more time to and and then we’ll be we’ll be good to go it shouldn’t be too much longer it’s cold outside it should start soon some unlike do we shut the camera back off and waiter I don’t know it’s been cold enough let me shut the key off and wait for a second by the way the the no calm on the crank was just the initial crank once I held it in the data came back so I had to crank it longer or was the answer to kit keep that from doing that you missed that you didn’t see that live but that’s what I was doing alright so we have this vehicle it now starts and let me get you guys back on the scope here let you see what this signal looks like it’s gonna be a little bit different because it’s gonna run starting it [Applause] change our time base so you see the square wave so cam signal good cam signal and then what I can do is I can show you guys the scanned data as well the cam and crank signals that we were looking at before then we have a crank count we have a cam count still they’re both counting what I can do to simulate the know start and show you the cam and crank counts is I can unplug the coil primary and then we’ll make it not start and then I’ll crank it and show you the cam and crank counts will count together so let’s do that over here that’s the ignition coil so the primary circuit I’ve disabled it and we’ll crank this over look at the look at the cam crank sinks come on come on there we go right there both counting that looks great and then one more piece to show you guys a cranking test of the cam sensor is here’s your square way of cranking when we had a flatline before so that’s it nice easy diagnosis um nice and easy for us because Caleb and I aren’t the ones that are gonna change that cam sensor which is in the back buried in that distributor I’m pretty sure the intake manifolds got to come off to get to that and change it so fortunately for us we can just wash our hands of this and be done so faulty cam sensor was nice that we were able to show you what a good one looks like this truck oh I can show you guys one more thing watch this let’s plug this coil back in and what I’m gonna do is I’m gonna show you guys that this truck will run without a cam signal but it won’t start without it so I’ll start it you guys already saw that it doesn’t start without the cam signal but I’m gonna start and run it there’s our jam signal I’m gonna go up and unplug the cam signal sensor connector trucks still gonna run so I shut it off Kim censors unplugs notice hurt my thumb on that notice the truck still running and it’s running fine and the reason behind that that cam signal is used to coordinate the crank signal once the coordination is there the Chuckle run all day long so you set it off watch what happens when I start at all shut the truck off try to restart it and the reason behind that as soon as the truck shuts off the computer doesn’t know where the cam and crank is in relation to each other it needs both signals to coordinate them so it can initiate timing and fuel and without that cam signal this truck won’t start the crank sensor on this truck is not elaborate enough to run without the cam signal cam signals needed to synchronize this one little lesson on know start diagnosis plug this cam sensor back in this thing will fire right up don’t get a shot on my butt crack it’s hanging out right now cam sensors plugs back in multicam sensor hope you guys learned something let’s set this off you can hear me for more training on pull up pull down circuitry I want to remind you guys again go to my website WWE and add an intercom click on the scanner Danner premium tab that is a paid subscription channel cost $11 a month for you to be with me in my classroom at Rosedale Technical College I can bring you in the classroom teach you these foundational pieces of information such as pull up and pull down circuitry my son Caleb is actually remotely taking my class as he’s editing my classroom videos and learning the theory and operation of things so it’s pretty cool it helps you troubleshoot circuits we were able to identify right away that we didn’t have an open or short to ground in the signal wire on this cam sensor knowing it was a pulldown designed circuit so things like that and many more right now to date today is December 11th 2018 there’s close to 400 videos on my premium channel right now and I have a couple of introduction videos that you guys can look at as well and I put them right here on YouTube so there’ll be some links for that guys thank you so much for joining me I’ll see you next time

100 Replies to “2002 Dodge Truck Will Not Restart When Hot (P0340)”

  1. A lot of people have been having issues with v18.x of snap-ons software in the facebook group. I heard someone say 18.2.1 was good, but 18.4 is real bad.
    17.4.1, and 18.2 were also frying airbag modules on toyotas, especially rav4s when clearing codes.

  2. Kind of similar to my Dad's 08 FIAT Doblo 1.3 Multiljet – it will start on the gentlest push start but it won't start on the key no matter what you do. It's been with every expert in the business here for the last six months but none of them can crack it. Unfortunately, it's going to the scrap yard

  3. Thank you for your dedication. 23 is cold as hell. I appreciate it. Plus the your book is amazing it helps me out every weekend 😂

  4. so the other day , it was warmer than it has been- after starting the car,it stalled and would not restart– I unplugged the MAF and the car started right up– Does this automatically mean the MAF or its harness is bad?

  5. You rock Danner. Have you ever seen the cam and crank fail at the same time? I had an intermittent stalling issue on my 4.0 and I replaced the crank sensor and it didn’t stall but on my way home the cam sensor went out.

  6. Great video! What resource do you use to find out sensor design. I know you said you know older Chryslers very well, but if you were working on another make, how would you determine if a cam sensor is a hall effect or if it is a pull up or pull down design?

  7. Another great video !!! to those who are interested in the premium channel, let me tell you it is more than worth it, try it for the free 14 days and I guarantee you will stay on as a paid subscriber!!! I am learning so much and you will too !!! Paul for President!!!!!

  8. Give your son a fish he eats for a day. Teach your son to fish he eats for life (can fix his own car👍👍)

  9. I guess I can't bash the engineers too much – at least it didn't kill the engine the minute it failed … because you know that would be in the middle of a 4 lane expressway, at rush hour, in the middle of the beltway of some major city. They could have engineered the thing to run WITHOUT the sensor, though …

    How frustrating that you pay all that money for Snap-On products, and they give you the same glitches as the cheap stuff. With all the money that company pulls in, you'd think their R&D would be second to NONE. The 21st Century is surely a baffling time …

    Always great lessons, Paul! I appreciate you guys freezing your rears off for us – I now know how much of an effort filming is! I have a newfound appreciation for all you guys now. I swear the camera adds double the time, and more to the job, if your teaching the way you do! THANKS, Paul & Caleb! 🍻

  10. Working my way through your book which is a literal goldmine of information and knowledge. I am now going through Chapters 2 and 3, so this video was especially timely.

  11. our snap on scanner at work did that about 2 months ago after an update. was like that for a week, wouldn't show data just read codes. but then another update was sent to us by the provincal rep, said he forgot to send it to us, we installed it and everything has been fine since. and from what i could see we have the same scanner, ours is wireless.

  12. what i dont get is why anyone could give paul a thumbs down and there are 5 of them SMH right now paul just like always grate video even though i am not a dodge fan i still learned something today and thank you for your time

  13. Theyre updating firmware …I believe so makes it harder for people to teach others . youtube vids are killing shops. Snap on is all about the shops that buy their products.

  14. What can cause a 5v reference from the ECU to be 11v? My IDL shows 11v when manual said it should be 5v. This is on the TPS. Thanks for any help you could give me.

  15. In low ambient temperatures I had communication issues with Chrysler and Jeep on a Mt2500 . I bought an MTG2500 and had the same issue with that one also despite swapping cartridges between them. As soon as the temperature warmed, both scanners communicated just fine. Not sure if the operating temperature range of the scanners are more sensitive to to perform diagnostics on some makes of cars than others makes when very cold, but appears so with Chrysler using Snap On.

  16. I got this exact problem with my project MR2, except in my case it was a VR sensor that failed from heat. When hot enough, the sensor would fail and the engine die (I was using a missing tooth cam position sensor, so the ECU's only signal would disappear). When cold, it would be ok. Eventually it died altogether. This started when I started running a turbo – more heat killed it!

  17. High school education is important. However, I'm a High school drop out and became lead tech at my shop within 3 years when I was still in the automotive industry. Can pay all you want for an education but some people still won't understand the value of knowledge

  18. This was some helpful info mainly because that's what I drive is a dodge the only differences are mines the hemi 5.7L but the circuits are mostly the same. THANKS PAUL!

  19. I definitely learned something lol I'd love to come learn more in person in that was something that would be possible for someone of my age.

  20. Hay Dan you can use the generic side of the scanner… it cant lie.

    Nice job and ya he should go to school (bad Dan DAD)

  21. I had a crank sensor fail in a similar manner last year on an old Volvo. You could start it, drive around all day, but once you shut it off it wouldn’t restart unless you waited a while.

    It’s an OBD1 vehicle and I do not own a scope, so i did not properly diagnose it like you. However, it’s a $14 part an takes about 2-3 minutes to change, and the wiring was very degraded..so I replaced it anyway. No more problems! Very common failure on these cars as well.

    Great video as usual.

  22. Quality content as usual…
    Was waiting for you to do a bypass test….tapping on the sensor wire with a grounded test light to fool the computer into starting.

  23. Great video again Paul and thanks for sharing. And i don't know if you had got my message asking about that 18.2 software, but yea i had a ton of little problems with my tool after it. The 18.4 update put me back up and running. and in cause someone says something about the service and firmware update for 18.2 we did them. So if you continue to see glitches like that, getting the .4 will fix your problem. Thanks again man!

  24. Sorry, Sanner Danner. My old roommate decided to log into my account and talk garbage to people. I told him he went too far! I already posted what a great job you guys do with your video's. Again, I'm apologizing for his post! The pranks went too far; I at least just made other people laugh about him. Keep up the great work!

  25. Paul, I've been watching your videos for years now. I just wanted to thank you for all that you teach. I have your book and I'm a premium member on your site. You've made me a better diagnostic tech and I continue to learn something after every video you post. The circuit designs don't always apply to me as I only work on Porsche vehicles (for 6 years now). But the diagnostic process you teach helped me immensely. I can now confidently tackle almost any electrical issue I come across. For any younger techs out there, LEARN FROM THIS MAN! We need more electrically competent techs in the field.

  26. Skewl me here Paul if you would please, could you not assume that the 5v reference is good if 5v is being returned to the PCM on the signal wire?

  27. I had a Ford Focus like that, gave me problems for 3 months strange, then BAM! It worked like new all by it self then I sold it a week later lol

  28. Get yourself an aerosol can of co2/refridgerent that plumbers use for freezing pipes. It’s great for quickly reducing the temperature of a sensor or solenoid if you don’t want to wait around for hours.

  29. Paul, love the I formative vids. Question for thought!
    1993 obd1 dodge caravan.
    Out fans stopped working. I narrowed it down to the thermistor. Water temp sensor unit.
    Fans work great. Problem is that as soon as I installed it the engine became hard to start. Crank it about 3-4 times then she fires up. Odd! Any thoughts.?
    No codes flashing at all. Runs great when warmed up and ready to go. Any ideas my brother???

  30. I have a 5.9 and difficult to reach distributor. Think I've replaced cam sensor three times now. remove throttle body to get at Distributor. Don't need to remove intake Manifold.

  31. Mr. Danner. Ive been subscribed to you since day one of my career as a mechanic. I owe alot of my knowledge to you. As a shop we started from the bottom and now continue to grow. I also bought your book. Check out my new channel The Nuts & Bolts Garage. That shop has that many employees thanks to you. Give us a shout out. Hope to meet you soon.

  32. Paul, I have a 85 mercury grand marquis. It’s got about 50,000 – 75,000 miles on the engine and trans. My issue is that I have the CFI fuel system and the TFI ignition system as well. Both are a pain but, now for the past few months the engine is dumping fuel. I have replaced ALL the sensors recently while rebuilding the top end from a blown head gasket. But yet I still have fault codes for EGR valve position, voltage high, voltage low and erratic voltage. I have the same/similar faults for the map sensor too as well as EGO and ECT faults too. What’s your opinion on this other than the 30+ year old engine harness. Could this be EEC itself or the harness. This engine control uses electric over vacuum solenoids to control all the vacuum operated controls etc. Vacuum operated controls are: egr, map, a/c idle, a/c system function, throttle body choke, TAB, TAD and the cruise control.

  33. Hi Paul, I'm watching your few videos and I'm want to learn lil bit or more electronic and scanning but I need help and I'm from Chicago you good professional..

  34. good tips bud wish i new about this about 10 years ago with my 318 magnum that use to do thisall the time nobody could fix it lol i sold the rig and bought another dodge truck with the hemi in it

  35. Another great video Paul.. Thanks for all you do to help everyone who's interested in truly learning how to diagnose the problem..

  36. Most likely a fuel injector problem. If it starts cold and not hot. It usually means it is getting to much fuel. When an engine is cold it loves fuel. When it is hot it doesn't.

  37. Sir why some cars can start with camshaft sensor unplugged? And running but in limp mode.. What seems to be the reason behind it.. The issue was car cranking but no start but if you unplugged the connector of camshaft sensor it will run but in limp mode and can run only up to 2000 rpm only.. I'm wondering how the car runs with the camshaft sensor connector unplugged is it possible the camshaft sensor Is defective? And why car runs with crankshaft sensor only ? .. Thank you sir more power salamat po!!!

  38. Hi Dan! First of all, big thank you for all the quality content you provide! I wanted understand something about the 5v ref. Not sure if sometimes you refer to it as power or feed on some sensors. In some of your your diagrams you describe the 5v ref as the signal, with power being a separate wire coming from the PCM, but in this video you're mentioning the 3 wires as the 5v ref, signal and ground. That means the 5v ref in this case would be the power for that specific sensor? I know only some of the sensors are using this reference, so are crank and camshaft sensors part of them, or do we call those 3 wires power, ground and signal only?
    I guess, what I am asking is, is the 5v ref the signal wire or the feed? Thank you !!

  39. Do you provide info on how to properly wire an engine in another car? Whether its on this channel or your premium channel

  40. Do why were you getting N/A for all sensors?

    And is the CMP generally only used for start up with all vehicles?

  41. Some men are just Blessed w/ superior intelligence & exceptional understanding far beyond average men except you Sir still remain humble in your teachings.
    – Bravo !

  42. I LOVE IT I GOT A ELECTRONIC engineer degree YOU GOT ME BEAT THANKS i will definitly keep watching you

  43. Im a heavy equipment field tech but I have taken your principles to my field and applied them. In the last two years I have progressed immensely in electrical and engine electrical troubleshooting. I love a good challenge. I had a dozer with some crazy CAN issues last week. Two techs had spent countless hours on it. By looking at schematic and keeping it simple I was able to diag and repair the issue. It feels really damn good being able to figure out somethi g after multiple people have given up on.

  44. Good day Paul and Happy Fathers Day.

    Getting off track from this video, I have a question for you and would seek your opinion/advice.

    97 GM with 4.3L Vortec. Engine died. VCM very corroded and signs of water/condensation inside once taken apart. Ordered a refurbished VCM and it was programmed to my vehicle VIN#. Installed the VCM but no start. Turns out to have been a bad "NEW" ignition coil! Engine now runs but Trouble code P1621 shows up. Clear the code and it reappears each time. This code P1621 is an EEPROM error/performance issue. My basic code scanner does not pickup/read this code, but the garage Pro Scan Tool does.

    My question is: In your opinion, since the engine is running (and seems ok), should I be concerned and get it addressed or is it a minor concern and let it go?


  45. Man thank you very much for everything, i just started following you lol but I've learned more here than i did while in college , not saying school didnt teach me anything but i bet your son is learning a heck of a lot more there with you, thanks again 👍👊 keep up the awesome work.

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