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Intermittent stall, no start - P0320, P1391 cam, crank sensor testing (Jeep) 

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Join me and one of my students at RTC as we troubleshoot an intermittent no start problem on a Jeep Grand Cherokee. The procedures shown in this video apply to all Chrysler, Dodge and Jeep electrical systems. In particular, the cam and crank sensor tests that we show.
Symptoms
- intermittent no start, no spark or injector pulse
- check engine light on P0320, P1391 trouble codes
- hesitation and surging
Fix
- replace faulty crank sensor
Tests shown
- how to test for cam and crank signals on scan data
- what scan data Ignition Cycles can be used for
- how to test the cam and crank sensors with a scope
- how sample rate of a scope affects the signal
- why a sensor ground is better to use than battery ground in some circumstances
- how to recreate an intermittent problem
- sensor power and ground tests
Engine Performance Diagnostics chapter 21
Playlist
- (Chapter 21) Ignition inputs, cam and crank sensors
• (Chapter 21) Ignition ...
Related videos
- Picoscope Basics Part 1
• Picoscope Basics Part ...
- Picoscope Basics Part 2
• Picoscope Basics Part ...
- How to test a crank sensor (Chrysler Dodge Jeep)
• How to test a crank se...
- Jeep 4.7 no start from faulty cam sensor (an SD Premium video)
• Jeep 4.7 no start from...
- Faulty cam sensor setting a crank sensor code - P1389, P0320, P0622
• Faulty cam sensor sett...
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdanner.com/join-sc... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

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7 май 2016

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Комментарии : 292   
@johnchristopherson2718
@johnchristopherson2718 8 лет назад
Dude you're a freaking rock star, without a doubt you are the best instructor on you tube, oh hell for that matter probably one of the best instructors I've watched anywhere, and I have watched several in real life, and on you tube, and as a former Technician/Instructor for over 30 years I know a good one when I see one. Thanks for sharing your knowledge.
@willemstreutgers1154
@willemstreutgers1154 8 лет назад
+John Christopherson Fully agreed !
@JawnWick215
@JawnWick215 5 лет назад
I have a 98 jeep GC 4.0 where is the cam sensor located?
@vincescalise4821
@vincescalise4821 5 лет назад
You are a awesome instructor no question about it, and the comedy is Much appreciated crop dusted LOL
@snsm6730
@snsm6730 6 лет назад
THANK YOU for taking time to post videos like this as many of us drive these vehicles and being able to have an understanding of this issue is important if you are on a budget like many of us are !!
@zyadkhalid6139
@zyadkhalid6139 5 лет назад
The last part of the video makes me to love you more than before when you said to the guy that don’t call you Mr. Danner Thank you for the detailed explanation
@wyattoneable
@wyattoneable 8 лет назад
That was excellent! You make it look simple so I can see where experience helps move things along.
@b.carroll
@b.carroll 8 лет назад
I can't tell you enough how much I have learned from you. When I first met you, I thought I knew how to do pretty much everything I needed to know about auto repairs. I never even thought about engine performance issues and how to properly diag a check engine light. you took me under your wing and everyday after school I would go to all of the shops that couldn't figure out their issues. I did not do it for money. I did it to further my automotive knowledge. I did this all on my own time. You have taught me more after class than I learned from all the other teachers taught me at school. The passion that you have for this field is what made me want to keep learning and bettering myself. You were there at my graduation from RTI and at my Wedding. Words can not express how thankful I am for all that you have done for me. Thank you for everything you have done for me. Keep on making these videos and I'll keep on watching. Brandon Carroll
@ScannerDanner
@ScannerDanner 8 лет назад
+brandon carroll Brandon! Thanks so much my friend. It's so good to hear from you. I don't always gets the pleasure of seeing or hearing from my students after graduation. I knew when I had you in class that you were going to make it and I was right! The money should be rolling in for you by now and if not very soon. It is students like you that make my job awesome!
@b.carroll
@b.carroll 8 лет назад
I am very happy with the money I am making. Thanks for always pushing me to do my best. I actually enjoy goin to work. Hope all is well with you and your family. Hope to see you around at some point soon.
@trainer2018
@trainer2018 8 лет назад
Good to see you still bring your students along Paul, that's the best learning experience by far. Since I've been teaching we have hired one of my former students which is great and I share everything I can with him. Plus at my Full Time job we are bringing in another intern who is also a former student of mine. It has been pretty rewarding Paul watch my former students improve as they progress in their career. You were one of the contributing factors Paul why I became a instructor. My thought about it at the time was if you can take the time to help the next generation of Techs why can't I?
@roadkill5333
@roadkill5333 8 лет назад
Oh my! You guys had me rolling! Shane floating an air biscuit! Paul actually having a live being to talk to! Dean had Jerry, Costello had Abbott, now ScanneDanner has Shane the crop duster!! PRICELESS!! Great video, guys! And on top of it all, I still learned from the instructive parts of this vid! Thanks for a great show.
@josephtucci3666
@josephtucci3666 8 лет назад
Great vid Keep Shane around makes for a great contrast Best of luck Paul
@int53185
@int53185 8 лет назад
Great team! Never knew Paul had a sense of humor until now. $! is on it's way.
@ScannerDanner
@ScannerDanner 8 лет назад
+James Last haha thanks
@davesministry7789
@davesministry7789 8 лет назад
Excellent, back to science at it's finest . Nothing forgotten, Good work.
@chriscanty8214
@chriscanty8214 8 лет назад
thanks Paul for the video I have purchased a vantage ultra you have given me the courage to continue learning about car electronics
@anthonydurantine2292
@anthonydurantine2292 8 лет назад
thank you for your dedication to our passion. another extremely informative video
@mobilemechman
@mobilemechman 8 лет назад
I myself didn't find Shane distracting at all. Great video as always. Thanks!
@xerxes456
@xerxes456 8 лет назад
Nice when you bring your students with you and it is cool they take the school serious, when I was in school many just went to school because they did not now what else to do. Nice video and many helpful tips.
@jimbuford4147
@jimbuford4147 8 лет назад
Good to see a young man that is serious about his training.
@todayintheshopbanksy5904
@todayintheshopbanksy5904 8 лет назад
'Crop dusted' is a new to me, classic.
@eddiemartinez265
@eddiemartinez265 8 лет назад
+WhitwellMike B Me to have never got wind of that before ha ha ha.
@todayintheshopbanksy5904
@todayintheshopbanksy5904 8 лет назад
lol
@timelston2152
@timelston2152 3 года назад
@@todayintheshopbanksy5904 ugh hi
@bilobicho5317
@bilobicho5317 5 лет назад
Very Infirmative info DR. SD ur a MONSTER TEACHER👍
@kevineinheuser8643
@kevineinheuser8643 8 лет назад
Just awesome! Danner, you're saving and propelling the industry to the next stage. Keep it going!
@ScannerDanner
@ScannerDanner 8 лет назад
+Kevin Einheuser thanks Kevin!
@ronvessells1356
@ronvessells1356 6 лет назад
So awesome! to see how you getting along so well with your students. Made the video more enjoyable. I laughed, and I can't remember the last time I laughed watching one of your videos. Great teachers are never forgotten by their students.
@ScannerDanner
@ScannerDanner 6 лет назад
Thanks man
@juanjuarez7289
@juanjuarez7289 2 года назад
Great to know that you are passing your experience to your student(s)! We all depend on your service to keep our vehicles running well/JJ
@northjayhoon9789
@northjayhoon9789 3 года назад
You guys are amazing Thank you for sharing the knowledge with us
@jordydereus
@jordydereus 8 лет назад
love your videos danner. watch them all the time. like your new set up. your great with students. keep them comming. cheers from Holland..
@mikechiodetti6737
@mikechiodetti6737 5 лет назад
You guys are comedy relief! Or gas relief!......AND you caught the intermittent when it failed, PROVING the crank SENSOR......NOT the sensor GROUND is bad! FANTASTIC! OR, as I used to say at my previous work place when I caught the problem with the scope, meter, or both......I GOTCHA ! ! ! THAT'S what makes a Great Video!
@martinguitarhd28
@martinguitarhd28 8 лет назад
Excellent as always Paul.Crop dusting lol never heard that saying before.You are a very funny guy and it's good to see the humour with your students.I don't think taking along a student detracts from your teaching !! it's good to see a true master at work.you are the best.Any one reading this if you have not joined Pauls class on his premium channel you are missing out big time.
@ScannerDanner
@ScannerDanner 8 лет назад
+martinguitarhd28 thank you so much!
@Pablo_Automotive
@Pablo_Automotive 8 лет назад
Nice diagnostic, you are a good teacher =P
@rockynix7731
@rockynix7731 Год назад
Using my magnifier glass helps see things a lot better when watching on my phone... Nice to see every little detail...
@daddyphatsax304
@daddyphatsax304 2 года назад
Ive seen so many of these on this motor...i likely wouldn't have even hooked a scope to it and just climbed under the truck and swapped the CKP. Rolling the dice on it isn't always the best option...but it's such a quick swap and the part is so cheap...saving myself the 30 minutes in diag is a risk i am willing to take at this point. I've been thru this diag process on this motor a few times but this was a good review and you brought up a couple good points to consider. Thanks for the vid SD...keep up tha good work!
@janregheton
@janregheton 4 года назад
This is the third night in a row when 2am catches me on this channel. As a DIY-er and a hobby-ist it doesn't make sense for me to subscribe to the premium. I don't think I could ever apply above 20% of that info on my personal car but I would gladly pay that 1$/month for the effort you put in this content. So the idea at the end of this video was not that bad.
@ScannerDanner
@ScannerDanner 8 лет назад
lol two people gave me a dollar. Thanks guys!
@CL-rf9bm
@CL-rf9bm 7 лет назад
Hey Dan i could seriously use a hand... My 97 jeep has been doing weird stuff. Normally it will run fine but lately it will start up run a few seconds and immediately die. Holding the gas does not keep it running and im going nuts here.. After sitting for a few minutes in the past i will hear a click like a relay (sounds like it comes from the fuse block in the cabin) and my gauges will come on and it will then crank/run fine..
@nestrac
@nestrac 8 лет назад
Just keep bringing Shane or other students along... It alright
@eddiemartinez265
@eddiemartinez265 8 лет назад
+Carsten Langbo Yes but no gas attack!
@stetto
@stetto 3 года назад
Had this exact issue pop up this past week on my 02 TJ 4.0. This saved me a ton of shop fees! I don’t have an O-Scope, but I did test the sensor with a multimeter. Thank you for making this stellar video. Your process is fun to watch!
@smilingcopycat
@smilingcopycat 8 лет назад
Happy Danner, nice to watch! Thanks...
@rainbowdiamonds2865
@rainbowdiamonds2865 4 года назад
Good Video , perfect diagnostic.
@canifixit3504
@canifixit3504 2 года назад
I enjoy watching these video's they really help me to fix my wifes jeep
@alejandroruiz3370
@alejandroruiz3370 2 года назад
Awesome and informative vid, going to attempt changing my cam sensor since im getting a various codes related to it
@ziyadalshaham1263
@ziyadalshaham1263 8 лет назад
Mr Paul danner you are a great master thank you, my wish in my life to be one of your students
@ScannerDanner
@ScannerDanner 8 лет назад
+Ziyad Alshaham that would be awesome! However, if you cannot in person, there is always SD Premium. I created that channel for guys like you. Thank you so much!
@jacobarellano3736
@jacobarellano3736 5 лет назад
Great video MR Danner!
@pacosoide
@pacosoide 8 лет назад
Good comedy routine there, I love it. Educational too!
@devinsnaples
@devinsnaples 8 лет назад
thx for the info & the laughs keep'em comin
@drivewasher
@drivewasher 8 лет назад
Brill video Paul! I think the two person video adds something. It shows what a great well respected guy you are. If I was a bit younger than my 60 years I would defy be trying to get into your classes at Rosedale! Oh by the way the lift on yer truck looks great out at work
@eddiemartinez265
@eddiemartinez265 8 лет назад
+Steve Ashcroft Yes he should do a photo vlog on it like the wheel's.
@michaelfrancis3261
@michaelfrancis3261 8 лет назад
Wow this is like the coolest teacher, thanks for another awesome video. I'm working on a 03 Honda that's starting and stalling, pull the code and it's a camshaft code. I just wish it would run long to do try this on it. again thank you Mr. Danner oh sorry Paul.
@mikesabin8568
@mikesabin8568 4 года назад
What do you mean? If it is not running, it should still have the correct waveform on the signal wire? You can literally pull the fuel pump relay out, crank the car, and see the correct waveform with the car just cranking...
@nigelclark7360
@nigelclark7360 3 года назад
All good info well explained,excellent.
@larryhurst8958
@larryhurst8958 8 лет назад
Great video. Good interaction between you Shane, good break from the technical. Is crop dusting a prerequisite for the class ,lol
@bigsscore8378
@bigsscore8378 6 лет назад
Very helpfull thank you for the information.
@jerrymesser2811
@jerrymesser2811 4 года назад
nice work fellas,love the knowledge,🍺
@rm1seal
@rm1seal 7 лет назад
Great information for a non motor head person like myself.
@ScannerDanner
@ScannerDanner 7 лет назад
thank you mark!
@philh9238
@philh9238 8 лет назад
itd be epic to get you and your bro on one of these mobile calls
@mr2law
@mr2law 8 лет назад
That was hilarious . Thanks for sharing.
@JOHNPHUFNAGEL
@JOHNPHUFNAGEL 8 лет назад
Shane is going to do great in this field!! For the RU-vid audience check out South Main Auto Eric O has a jeep that fried 2 coils from a bad cam sensor Great video!!
@ahill007ny
@ahill007ny 8 лет назад
That video crazy they were smoking!!!
@roadkill5333
@roadkill5333 8 лет назад
The first thing I thought of, when he was talking about that!! Eric O and the smoking coils of death!
@sammoore1944
@sammoore1944 8 лет назад
You crop dusted me lol made me laugh.Paul i too like the vids with the students present ,,But then again i love all your vids.Best teacher by a mile !!Anyone on here not part of Paul's class,do your self a favour and join the premium channel !! you will not be dissapointed .
@ScannerDanner
@ScannerDanner 8 лет назад
+Shaun Moore thanks so much Shaun!
@Tedybear315
@Tedybear315 8 лет назад
Good lord. Crop Dusting and a Bloopers Segment!!! Nice way to start the day!!
@eddiemartinez265
@eddiemartinez265 8 лет назад
Was not to good for paul.
@haywardsautomotive6156
@haywardsautomotive6156 8 лет назад
Nice video Paul! Shane will fit in good in a shop environment.
@JamesL-88
@JamesL-88 2 года назад
Awesome video
@stanilastefan1687
@stanilastefan1687 8 лет назад
That noise you are picking when you connect the scope at the battery ground it's there because you are making a ground loop. Ground loop noise appear when large and low currents are sharing same path on a circuit. For this reason the PCM has multiple ground pins instead of one.
@TRYtoHELPyou
@TRYtoHELPyou 2 года назад
Tks for going over the stuff. I didn't ask for the funny stuff .... But it was good. Like... Just good
@oscarcabrera1355
@oscarcabrera1355 8 лет назад
good video thanks.
@Adam-bw4lw
@Adam-bw4lw 8 лет назад
from 16:15 to 16:40 best moment.....i like the new setup :)))
@nickayivor8432
@nickayivor8432 2 года назад
Good Evening Sir ScannerDanner have a great day and take care Sir ScannerDanner. Tutorial great thank you 👏 👌 👍 From Nick Ayivor from London England UK 🇬🇧
@amr-50
@amr-50 6 лет назад
you are so funny guys , great video as usual
@nestrac
@nestrac 8 лет назад
Eric can definitely relate to the that "it a Chrysler thing"
@CRAZY_VIDS07
@CRAZY_VIDS07 Год назад
Student ID agreeing to everything but body language saying I'm totally lost...lol😂😂😂
@Thunderroad8517
@Thunderroad8517 8 лет назад
@ 6:55, Dummy Shaft drives the camshaft sensor yes. It is the bridge between the cam and oil pump as well..
@motorcyclesandridingfree2899
@motorcyclesandridingfree2899 8 лет назад
I agree with the snap on leads the ones from AES wave are much better. Snap on needs to fix that as much as they charge
@rogerd4559
@rogerd4559 4 года назад
HAHAHA! Dude!! you totally crop dusted me!..... PRICELESS!
@lance1097
@lance1097 3 года назад
Good infotainment
@patrickchambers479
@patrickchambers479 Год назад
Great 👌 👍 job
@josephpingel2553
@josephpingel2553 3 года назад
My engine light goes on and off and returns a code about intermittently losing cam and crank sensors. It doesn't die but misfires sitting at a stoplight. Seems to drive okay on the highway. The problem turned out to be an oily mess (probably from a leaky trans) getting on the crank sensor. It appears the magnetic signal is affected when there's oil on the sensor, but obviously it's getting through, so I'm wondering how bad the problem actually is; whether I can drive it without worry until I get something else or budget a costly repair to fix the oil leak.?
@jeremystory6981
@jeremystory6981 2 года назад
Thank good job,
@srvjediknightsrv750
@srvjediknightsrv750 8 лет назад
guy is brilliant love the vid's ......mobile mechanic ;)
@ScannerDanner
@ScannerDanner 8 лет назад
Thanks so much
@kdmq
@kdmq 8 лет назад
Just curious Paul, when you saw the cam sensor problem setting the crank sensor code, was the RPM gauge going nuts?
@jasonmushersee
@jasonmushersee 8 лет назад
The way i figured mine out was it would stall the engine @ running temp, then no start with endless starter cranking. Then let engine cool & it starts right up until it stalls again. Got progressively worse over 3 days.
@colinburdenmc
@colinburdenmc 4 года назад
What was it?
@adrianornelas6447
@adrianornelas6447 7 лет назад
hey man, can a bad cam sensor cause the fuel pump to be constant on when turning the key to the on position
@HayabusaRydr
@HayabusaRydr 5 лет назад
It was funny :D Subscribed! Haha
@jeffjohnson3195
@jeffjohnson3195 8 лет назад
YOUR DOLLAR IS IN THE MAIL......, Good info as always
@lukekujawski
@lukekujawski 7 лет назад
how do you test if you do not have a fancy tester and codes was cleared 6 mos ago I know it had a O2 senor error but ran fine all of sudden died and would not restart and a jeep mech said not worth it vechal is a 2002 Jeep grand Cherokee with the high output engine v8
@derwinrandle2682
@derwinrandle2682 7 лет назад
hey Paul I have a 03 grand prix 3.1. code po336 I have fuel pressure,spark at each coil,but no injector pulse.I changed crank sensor in block now it starts somtime and somtime it doesn't the wire is not broken or short,at first it would not start at all,do you think I bought a bad sensor
@TheRubenTrance
@TheRubenTrance 7 лет назад
Hello, Thank you so much for sharing this video... I was wondering if you may shed some light on the problem I have with my 03 Jeep Grand Cherokee 4.0. Initially my car stalled pulling into my garage. Engine was cranking but no start, and gave P0320 on my dash which pointed to the crank sensor. So did replaced my crank sensor with a BWD brand. Engine started & ran but was misfiring and gave another code P0340. which pointed to the Cam sensor this time, & so I went ahead & replaced the cam sensor as well with Mopar OEM. After that still engine misfires/ shakes then gave a different code again P0352 which pointed to Ignition B , so I went ahead & replaced the Ignition coil pack with Delphi brand (close to OEM) . After that replacement, engine ran well & so I took a it for a test drive but after about 15 miles the engine starts to misfire again then eventually stalled on the side of the road. "Checked engine" light was on & this time its P1391 which points to crank/cam intermittent lose. Car had to be towed back home as it wouldn't go anymore. After a good few hours parked at home the car started & ran like normal but eventually misfires yet again when warmed up giving the same problem code P1391. Anyhow, I am quite perplexed by now as you may imagine... I would be grateful to hear your opinion on this matter, if able . Other mechanics on You Tube seem to suggest that the crank sensor must be replaced with OEM Mopar. Do you supposed this is true , & absolutely necessary to do for this particular issue? Thank you so much! Reuben PS. Do these (newly replaced) sensors need reprogramming with car's PCM?
@Avizponverde
@Avizponverde 4 года назад
Ruben L I’m having the same problem right now!!
@oscarrojas4281
@oscarrojas4281 3 года назад
You are awesomeeeeeeeee
@avantsautomotive6022
@avantsautomotive6022 5 лет назад
That shaft is important for oil pressure too as it drives the oil pump !
@trublue2319
@trublue2319 4 года назад
I had a 08 avenger today scoped cam and crank I see the issue I had I was to zoomed in wouldn't of noticed if I was loose ing the pull down to ground
@courtneysmith4354
@courtneysmith4354 8 лет назад
awesome video. i want to be just like you scanner danner. i have watch all your video and red your book.your propell me in becoming a good technician. thanks scannerdanner .
@ScannerDanner
@ScannerDanner 8 лет назад
+Courtney Smith Thank you Courtney! You've been a long time subscriber and I really appreciate it.
@steveallen5496
@steveallen5496 8 лет назад
Another troublesome Jeep. Are they all defective? It needs a lift kit, that will make it look good even it it won't run. Good on you Shane for pursuing knowledge.
@DENicholsAutoBravado
@DENicholsAutoBravado 8 лет назад
+Steve Allen LOL. I know I've told a similar joke before. :)
@willemstreutgers1154
@willemstreutgers1154 8 лет назад
This reminds me of a movie called Dumb and Dumberer. The most important one learned here is Check the way you lay down your leads. Thanks for the added fun part.LOL
@ScannerDanner
@ScannerDanner 8 лет назад
+Willem Streutgers for sure!
@kkampy4052
@kkampy4052 4 года назад
Is it possible to have a failing cam or crank sensor without a CEL or code?
@SethHarr
@SethHarr 8 лет назад
Couldn't stop laughing at the crop dusting. But great info as well.
@rxracer
@rxracer 8 лет назад
For $10k. I'd hope it have a camera. And I love that those are windows based
@NZdiagnostics
@NZdiagnostics 8 лет назад
Gidday from down under Paul, have been meaning to ask you and your brother if you have tried a "mooshimeter" before? If you don't know it's a very affordable two channel bluetooth graphing multimeter. I bought one a few weeks ago and find I am using it all the time. Having something that doesn't cost the earth that you can strap under the bonnet and monitor form your phone is super handy, especially if you are working on your own. If you check out their videos they do a neat trick of using a battery cable as a current shunt too. I am in no way affiliated with mooshimeter but had to share with you as I absolutely love mine!
@ScannerDanner
@ScannerDanner 8 лет назад
+Alex Wills I have never heard of one. Can you post a link? It will go to spam automatically, but I can unspam it when I see it.
@NZdiagnostics
@NZdiagnostics 8 лет назад
+ScannerDanner Sure can, check them out here moosh.im/ also if you search mooshimeter on youtube they have a couple of great videos where they test it out on a Honda using the battery ground as a current shunt. I have found it fantastic for working on my own and also find the speed and convienience really good. The software isn't perfect, but I have a vantage and vantage pro (bought on your recommendation) as well, so no biggie. Great to support a US startup company too!
@IMFDB
@IMFDB 7 лет назад
i've had a crank sensor drop out on a 97 saturn sl2 intermittently and cause stalling. unfortunately did not set any trouble codes and was really hard to duplicate and prove it even was a crank sensor. when it did stall out. it cranked and didn't start. the no rpm while cranking pointed me towards crank sensor. i didn't have a oscilloscope to prove it. i wish i did. i told the customer you have a 50/50 chance it's a bad sensor or a warped crank reluctor wheel. put a sensor in it. ran it for 3 hours, haven't seen it since. the old cars that don't have engine computers smart enough to store bad sensor history data can be real frustrating to narrow the cause for intermittent concerns.
@stevenholcomb2990
@stevenholcomb2990 4 года назад
My 2000 Jeep Grand Cherokee 4.0 pulls a p1391 I have replaced both my crank shaft sensor and my cam shaft sensor my can shaft synchronizer(dummy distributor shaft) timing chain and ignition coil and I still get the same code
@ScannerDanner
@ScannerDanner 4 года назад
When you replaced the cam synchronizer, are you sure it is aligned properly? I don't remember the procedure on these.
@LynxStarAuto
@LynxStarAuto 8 лет назад
Shane failed emissions
@Adam-bw4lw
@Adam-bw4lw 8 лет назад
lol
@tecnaman9097
@tecnaman9097 8 лет назад
+Lynx Star Automotive (Gabe V) ppm of H2S too high
@angelgarcias7328
@angelgarcias7328 3 года назад
Honda cr-v 5 speed sometime morning stared good like 35 m put it off got stared don't want to staring ogaing I way lilte be stared no power the rpm got up real slow you thing many that sensor thank s much got to code difrend P0112 other one P0116 thank s much you video
@TheGamerFiFtIn
@TheGamerFiFtIn 3 года назад
I bet he drives a honda civic
@gregp05
@gregp05 8 лет назад
eric o has a good video on the cam sensor failing and frying the coils. his channel is south main auto. check it out
@TrimJazz
@TrimJazz 8 лет назад
+gregp05 great video, chrysler/jeep/dodge should put warning labels on these models.... "dont park your car in your garage, coils may induce fire damage" ohhh the horror!
@timpeters3895
@timpeters3895 3 года назад
My 2004 jeep had start problem.code said crank sensor it was just a dirty connector go in to crank sensor.Its All ways something simple. I sprayed it with c r c no more trouble.
@jasonpantages7248
@jasonpantages7248 6 лет назад
98 Grand Cherokee,code 1391, replaced crank sensor,cam sensor or ignition pick up,still kicking back 1391. What and how to fix,any suggestions? Cranks runs drives fine...
@ScannerDanner
@ScannerDanner 6 лет назад
Make sure you set your air gap correctly on the crank sensor. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ws59zXvr1SM.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-TZwJ2jp8g0E.html
@billyr9840
@billyr9840 8 лет назад
Paul, I think the hash that the scope was detecting in the signal might have been emanating out of Shane's A** ! LOL ! Great vid !
@ScannerDanner
@ScannerDanner 8 лет назад
+Billy R haha yep
@johndoemilli
@johndoemilli 8 лет назад
have question about a 2003 grand prix gt key on engine off fuel pump keeps going on and off and oil level light along other lights keep coming on and off. Car runs fine until it starts to get to temp then starts acting up surgeing lights fan on and off.
@ScannerDanner
@ScannerDanner 8 лет назад
Ignition switch is my first thought. This is one of the models that I believe are under a recall by GM. Look into that okay?
@miltonscornertobylove5068
@miltonscornertobylove5068 4 года назад
Cool vid, but I notice that towards the end when the crank signal was craping out how come the cam signal was still good(nice square waves) ?
@ScannerDanner
@ScannerDanner 4 года назад
2 completely separate sensors
@wtbm123
@wtbm123 8 лет назад
Good video . Just glad i do not have smell a vision .
@westtexas501
@westtexas501 8 лет назад
whats the highest bias voltage you've seen on a circuit ? I'm pretty sure it differs from car manufacturers correct ?
@DENicholsAutoBravado
@DENicholsAutoBravado 8 лет назад
+Luis Nunez It can differ, it can be 12 V even, but 5V is common.
@adon2424
@adon2424 3 года назад
So.. green trace is now the crank ? At the beginning you said green trace was the cam. Did you swap them on me off camera?
@matutenoel4833
@matutenoel4833 8 лет назад
good. video. tech
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