96 Jeep, No Start, No Com with PCM, No 5v reference (Quick Tips)

No start, no communication with the engine computer, no 5v reference, fundamental testing methods that apply to ALL cars, ALL makes and ALL models.
Here is the original series this video was pulled from, it was a 41 minute case study, that we cut down to 15, with some updates for the last 4 minutes giving us 19:34 for this quick tip video.
1996 Jeep No Start Case Study Part 1 • 1996 Jeep No Start Cas...
1996 Jeep No Start Case Study Part 2 • 1996 Jeep No Start Cas...
1996 Jeep No Start Case Study Part 3 • 1996 Jeep No Start Cas...
Here are the links to the other videos mentioned:
No Start from a shorted MAP sensor (Honda, Acura) • No Start from a shorte...
Bad Engine Computer Testing Part 1 • Bad Engine Computer Te...
Bad Engine Computer Testing Part 2 • Bad Engine Computer Te...
ScannerDanner Tools:
www.scannerdanner.com/tools.html
www.amazon.com/shop/scannerda...
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.

[@ScannerDanner]

I'm sorry I was not more clear about the direction I took and why in this video. I truly felt going into this job (fuel pump running continuously and a no com, that we had a shorted reference circuit (I've seen it many times). Then with me teaching a class of 20 students while live troubleshooting, I got tunnel vision. But these procedure shown are super important to know how to do as 99% of people are lost after checking fuses. What do you do when the fuses are good? "Must be a bad engine computer"...nope, it sure isn't :-) So I will say this again, yes, I should have started with fuses, but do yourself a favor and watch the shorted MAP sensor video and you will have a better understanding. No Start from a shorted MAP sensor (Honda, Acura) kzbin.info/www/bejne/sJKUZIikpcd7bac

[@sorefoot6329]

I’m a DIY guy with a decent arsenal of troubleshooting equipment. I work on all our cars (2 that are over 200k miles and a truck at 150k) plus help a lot of friends/family. Stumbled across your videos working on one of our vehicles and have watched a lot since then. Sometimes I find myself saying “Why doesn’t he just.....?” but then I remind myself that you’re teaching systems and processes and concepts rather than a specific procedure. I actually think some of your best videos are like this where you get to a fault taking a little round-about path because it shows more of the whole picture. Someone at home might have been inclined to chase why the fuel pump was running full time and they would have eventually gotten to powers/grounds at the computer, found the fuse, and then (hopefully) looked for the cause of the fuse burning out. It’s not direct, but it’s not necessarily wrong either.

[@htownandre7385]

I have a 96 buick roadmaster with a 5.7l v8. I recently lost all fuel pressure. I've replaced the fuel assembly, fuel pump, regulator and relay. I'm still not getting any pressure. I can hear the relay and pump cut on when I turn the key but still no pressure. Please help scanner danner. I've tried to find a mechanic but everyone keeps turning me away. Do you know of anyone in the Houston area that can help me???. Please help scanner danner.

[@ScannerDanner]

@@htownandre7385 you can hear the pump? When you replaced the pump, was it the entire assembly or you pieced just the electric motor into the fuel pump assembly?

[@htownandre7385]

@@ScannerDanner pump runs fine. I pulled the return line off the regulator and jumped the pump get plenty fuel shooting out the return valve of the regulator. This is the 2nd regulator I've tried this week. Still 0 pressure. What the hell is going on

[@htownandre7385]

@@ScannerDanner what's really crazy is that if I press the gas pedal on a crank I can get it to run at a very low idle but still no fuel pressure reading

[@ScannerDanner]

Well, this was supposed to be released tomorrow at noon, not today lol. Hope you enjoyed it. Way more time than you think was spent on making this video

[@SmittySmithsonite]

We appreciate your efforts!

[@complot72]

One thing to keep in mind, unplugging a sensor assumes the short is in the sensor. This video showed us that a harness can be shorted as well. Unplugging the sensor would not have caught that. However, checking the fuses would have pointed a technician in the right direction eventually. Thank you for the awesome videos you provide us with Danner!

[@warrenfromga9945]

I found this video several years ago and it saved my butt. I had exact problem on my 96 JGC. It died at gas station. Would not start after gas fill. Had it towed to my home. I had shorted 5VDC at Ox sensor. Video helped me find the problem. I have been a subscriber every since. Thanks for your efforts.

[@ozzstars_cars]

I remember the long version of this video years ago. I'm getting old.

[@ScannerDanner]

We both are my friend!

[@tnamen1307]

@@ScannerDanner my car i20 has a SDVC function. Is this signal coming from the vss speed sensor? How to locate the wire??

[@wyattoneable]

"Heat and vibration". Something I learned from you a long time ago. It sticks in my head everytime I look for a wiring issue. :)

[@ScannerDanner]

It holds true time and time again, doesn't it? Thanks Wyatt!

[@DawonneJones]

facts chrstler and there electrical shit smh

[@ahmedhamoda2995]

Thanks for being there for us, we really appreciate your help and support 🙏

[@mannyclemente7159]

Mr. Danner, thank you for all the knowledge you share with us! You’re a great teacher, and I look forward to all the videos you have made and future uploads.

[@ykmulwanda1638]

I got confused because I watched this video sometime back yet it was showing a day ago(today 02/05/2020). Im always thrilled how you handle issues. With your steps I'm pretty certain your class is so lucky. I wish I was one of your students. Danner, stay home, stay safe I need you for many years to come.

[@REPOOCNITSUJ]

This is a really cool idea. I like that you correct yourself too (saying you should've checked fuses first). Hope to see more videos done this way.

[@robgreen7576]

Your enthusiasm and teaching methods are infectious great viewing.

[@MackhackCA]

Instead of cutting a perfectly fine wire, why don’t you remove the pin bushing from the connector housing with the appropriate terminal removal tool and simply push the pin pushing back into the connector housing when done? It takes only a few seconds. That’s how I work. Other than that, you have a real gift of teaching. I learned a lot from you.

[@neutrodyne]

This is a good informative video. Thanks for sharing it. I am sure you spent a lot of time on it. One thing to also note is that without the proper service information a person would have an impossible time trying to find and fix this problem.

[@Watchyn_Yarwood]

Super good. I like the new, shorter format. Your longer videos still have a very important place too! Don't stop!

[@sinegra30]

Thank you! You guys are amazing! I've been getting so much info from you Paul! You can't even imagine how much progress I have made in my technical career, access to proper automotive technical education in my country is non existent! Thank so much!!!! God bless you and Caleb an Kristin and your brother Danner and all your Family members! This short tutorials are amazing! Keep up the good work! You are my motivation to perhaps become a automotive technical teacher in my home country.

[@ScannerDanner]

Thanks so much!

[@billrimmer5596]

I remember that video. I have watched almost all your vids. Great stuff!! Excellent edumacation.

[@richardhectorlanthier9999]

Wow love your clips, i deal with electronics on machines all the time and didn't know the 5v reference, i work underground in the North where electrical circuits go bad often.i have watched quite a bit of your clips and learned a lot thx and keep up the good work👍

[@isalmankhan1]

An awesome case study👍 Thanks SD & Thanks Caleb😉 Stay safe Guy's❤

[@aussiefirestorm]

Visual inspection for the win, thank you Paul for all the hard work and inspiration. I still refer to your E-book regularly.

[@ScannerDanner]

Awesome, thank you!

[@kennysherrill6542]

Thank you for the tips, my 96 Grand Cherokee 5.2 died on me going down the street, no spark. When I started the car that day I could hear the fuel pump running which I never heard it run that loud before. I'll be running those test tomorrow. 👍❤🇺🇸

[@josealers67]

You guys make a great team. Caleb's window shut down. Nice. And of course the videos are great. Thanks again.

[@BigDogDiagnostics]

Paul, Love the added example of the shorted map sensor at the end! I like to physically see what the electricity is doing. Really puts the whole video in perspective. I have been watching your videos for a long time man. You have helped me through some super tough jobs, keep up the good work !

[@ScannerDanner]

Thank you Max

[@gregdykes5918]

Paul, I am loving this quick tip series. Keep up the good work and thank you for all the valuable information.

[@ScannerDanner]

Glad to hear it!

[@georgenjuguna9869]

Am in Kenya and have learned alot from you,,i now have confidence in my work

[@8power0]

LOVE THIS VIDEO , I HOPE THERE WILL BE MORE LIKE THIS IN THE FUTURE . WOULD ALSO LIKE TO SEE SOME TESTING SPECS LIKE OHMS AND AMP'S THAT WOULD GENERALLY APPLY FOR ANY VEHICLE FOR IGNITION COIL , INJECTOR , RELAY , FUEL PUMP , SOLENOIDS AND FAN MOTORS . IF POSSIBLE WITH THE DIFFERENT TESTS SHOWING HOW TO TEST THEM . THANKS SO MUCH FOR YOUR TIME AND CONTINUED EFFORTS .

[@vincescalise4821]

That was an awesome video, I was able to predict what you guys were going to do next step by step, because I’ve been learning from your of other videos ,This stuff is actually starting to stick in my brain Thank you for being such a great teacher Paul ,It really means a lot to me

[@ScannerDanner]

That is awesome! Thanks so much for sharing

[@bradfaught1695]

Between you and eric. O I've learned alot about electrical diag. I learned the basics when I worked at a dealership, but you've taught me alot about how to diag without a diagram. My brothers side by side wouldn't start , when I jumped it the battery voltage is around 11 volts at idle. I Googled it and saw that the voltage regulators sometimes go bad but I didn't want to load the parts cannon without being sure....I tested the stator, 18v,17v,16v good, I tested the voltage regulator 16v good. I didn't have a battery tester but you better believe I ordered one after that. Thank you and hello from Indiana county.

[@roadtripPinas0630]

Wow!!'what a find.! Thanks for this shortened video sir!

[@robertmedina6875]

Great Job Paul n Caleb!! Keepem coming!

[@neverstoplearning382]

Quick tip series the best. Thanks a lot.

[@johnjohannemann1220]

Excellent information as always. Good job!

[@prentissirby6674]

Thanks for your great videos . I really enjoy learn so much from you.

[@juelzgdo2660]

DEFINITELY GAVE ME ANOTHER IDEA ON HOW TO TACKLE MY CURRENT ISSUE 😅 ....KEEP UP THE GREAT WORK 🙏🏽

[@mohamedrahib7685]

Thanks for this video . You're the best mechanic teacher in KZbin.i like watching your videos.

[@ScannerDanner]

Thanks mohamed!

[@georgebonney90]

Great fundamental lessons,thank u mr danner👍

[@dubblyewjay1133]

Loved the 5v ref voltage teaching. Helps me with my 2001 Ram 1500 4x4 sensors.

[@ScannerDanner]

Great to hear! Thank you

[@josmith5459]

Im having a similar problem with my 01 cherokee 4.0 thats been driving me crazy,fuel pump runs constantly even with ignition off,but i think you have gave me some really helpful information greatly appreciated.

[@brianburch8062]

This was HUGELY helpful! Thanks!

[@jdtractorman7445]

8:40, I have that same short circuit tester and it works like a champ. Back in the day I used it to find a short in the courtesy light circuit in my 1988 F-150. I was going to say I was surprised the harness was routed that way and then I saw the very end of the video, LOL.

[@frankguerra3314]

I want too say thank you Mr scanner danner..I needed this video. I have a crank no spark no start.an I know I have a 5v problem..I. Wish I could get your book but I can't afford it but I love your videos..

[@mostlymoparih5682]

Good stuff as usual Professor. Happy Motoring.

[@JoelAutomotiveInaction]

Thanks for that great review 👍 great teaching strategies.

[@vlstyles]

I think you have found your tag team partner in Caleb! His comments peppered throughout your updates make all the difference in the world!! You play the straight man while he provides the zingers!!

[@ScannerDanner]

no question! Thank you, I will tell Caleb too :-)

[@bulletbobweldon1442]

Love your videos! Finally bought your book. Damn what a good investment!

[@ScannerDanner]

Thank you so much!

[@mechanicmatt871]

Nice find, and great explanation. Your videos and book have definitely been a huge help to me.

[@ScannerDanner]

Awesome, thank you!

[@mohamedhassanmohamednafas8206]

Excellent sir thank you so much The way that you explain is so beautiful and again thank you so much sir

[@caliman823]

Great video. Learned a lot and easy to understand.

[@alaautotonics4403]

great series well done God bless you bro

[@SmittySmithsonite]

I remember this one! Going back a ways there. I've lost track of how long I've been subbed to you! Think over 5 years now. Yikes ... that went by quick! Great stuff, Paul, and nice work editing, Caleb - this couldn't have been a quick and easy edit!

[@ScannerDanner]

It wasn't! Thanks Smitty, we are all getting old haha

[@SmittySmithsonite]

ScannerDanner - Ain’t it the truth, brother!

[@willarddickerson921]

The 4 cyc jeep sounded wonderful. Thank you.

[@theSilvioRoesler]

Thanks for posting! Awesome insights

[@josemariomerced9219]

I have a 98 jeep xj 2.5 liter 4 cyl. Same problem , thank you its a great help

[@FixItPhillip]

Great diag and summary brotha! -FixItPhillip

[@dre22001]

Great video love the value best video on electrical short 👌 so far

[@baxrok2.]

Yup, that's around the time I started watching, and being inspired by, you! Thanks!

[@ScannerDanner]

9 years ago my friend! Thank you so much

[@Pablo_Automotive]

Thanks Paul another Great job and explanation

[@zyadkhalid6139]

Good job Mr. Danner I love your job

[@salvadorgutierrezr5914]

Good teaching Scanner Danner, and thanks for the video👍👍👍👍👍👍👍👍👍👍👍👍👍👍

[@khaniftikhar9225]

Very interesting and informative video. Good. Thanks alot

[@33798]

Your videos always ❣️ lovable

[@shaungreen8713]

Thank you! Love your Videos!

[@The4thshodow]

nice summary! subbed

[@paulmuff9883]

Great video, manny thanks 👍

[@maxwellclark7054]

Gotta love the jeep 4.0l !!

[@sammalaa3258]

thank you master danner I enjoy all your videos

[@ScannerDanner]

Glad you like them!

[@billg4630]

I have watched several of your vids...this is one your best...this will work on anything awesome

[@ScannerDanner]

Thank you! Just replied to your other question too. We need to make sure your distributor is actually turning too

[@billg4630]

@@ScannerDanner I forgot to throw that information in there I pulled the distributor cap and I grab the rotor make sure it didn't have too much slack and make sure it wasn't broken and then I crank it with a distributor cap open and it did turn just fine so that was okay and this this Motors only got seventy thousand miles on it runs perfectly until just shut off like flipping a switch while idling at gas pump during a trip

[@billg4630]

I have ohm my new crank sensor just in case..its good..im looking for burnt or pinched wires...this is a head scratcher..

[@joseloslopez985]

Beautiful beautiful video tanks for your nice and helpful video

[@joseorellana7952]

Very good my friend..Saludos desde El Salvador

[@ryaninshanally6369]

Great job my brother,love the shorter video.

[@ScannerDanner]

More to come!

[@jamesmason5800]

glad I got to watch your video learned alot I will be watching all your videos you said some thing about a book you have

[@ScannerDanner]

Awesome, thank you! And yes, it is available on my website at www.scannerdanner.com I also have an entire training program available called ScannerDanner Premium. Check out the introduction and navigation video I have on my SD Premium tab of my website for more info on that.

[@imanolmorales6955]

My fav one keep it up💯🙏🏼

[@arturoquinoned1991]

Good job man 🎉

[@rexmesa3675]

love this video, awesome

[@nickayivor8432]

What do you call PRODIGY ,SUBSTANTIAL, KNOWLEDGEABLE the answer is Sir ScannerDanner Thank you very much,take care and have a great day Sir ScannerDanner From Nick Ayivor from London England UK 🇬🇧

[@amadohernandez8182]

Thanks for everything.

[@paulfiebke3909]

Keep up the good work and God bless

[@LyricsAndMelodyFacts]

I want to diagnose you sir Scanner why you had a windows shutdown for such long time lol!. I almost finish watching all your videos and let All the advertisements go on running. Thanks a lot for sharing your knowledge.

[@auddy3964]

I wish I could afford to get you to come down to nc, we got a 02 duango at our shop that is having a similar issue. But in the meantime I'm gonna use your videos and tips to see if we can get it going. Love the great work

[@ScannerDanner]

If you need additional help, join my forum www.scannerdanner.com It is free to join and we can definitely help you

[@mikechiodetti4482]

You found it, you fixed it, Jeep back on the road!

[@anthonydreher227]

I love it, I want to learn more

[@jasonmurdoch9936]

I know this is an older video and I know you're probably not going to see this but you made some good tips and some good points I have a 98 Grand Cherokee 4.0 and I'm having a no fire no start my gauges are going wonky I will be trying some of this stuff in the morning thank you wish me luck hopefully this fixes it

[@ScannerDanner]

Okay, I can help. Step 1, with the KOEO (key on engine off) test for a 5v reference on your TPS or MAP sensor. Tell me what you see

[@todpatn9782]

Pretty interesting stuff dude

[@nigelclark7360]

Very good when l was inspecting vechicles yrs ago l would spend around 20 mins going round inspecting the harnesses Even when there wasant an electrical fault, many a time a would find wires rubbing through, by finding These and repairing them Saved a breakdown at road side and it could save a lot of electrical damage.

[@RAFICKMOYO]

Thanks for your Video

[@whitetiger8652]

Thanks Paul!

[@ArimaDiaz]

Bro, I had this problem 2 years ago love ❤️it , I kept my Jeep after I sort of found this issue through the long way of doing things 😭🤣

[@bigpermsgarage6290]

Great video

[@nigelclark7360]

Very good video.

[@jimkillen1065]

I really appreciate your videos and the time invested in it thanks i try to use what i learn from.them

[@ericremington1332]

Good video good info thank you

[@abdalqadr1]

Amazing videos thanks again from Iraq❤❤❤❤❤

[@asmautollc]

Wasn’t around for the original airing, but great vid 👍

[@nickayivor8432]

Good Morning ScannerDanner 🙏 🌄 have a great day and take care ScannerDanner Thanks 👍 Great tutorial thanks 👍 🙏 From Nick Ayivor from London England UK 🇬🇧

[@tunbosunadeyemo1383]

Nice video,I would love to learn a lot from you personally in the future instead of watching your videos everytime. I don't really like comments but this is a very good video

[@ScannerDanner]

Thank you my friend! Please comment more

[@SaadElectric700]

Good job my friend

[@patrickoneill9650]

Awesome diag u da man :) Ive got 2003 4.0 no juice to the Fuel pump think its the computer im told this is common

[@anthonydreher227]

Tony D love the teaching want to learn more

[@v4vauxhall498]

9 years.... baby face Danner LOL......Nice one bro.

[@bosaadbosaad6792]

Great job my teacher

[@farukhnawaz4071]

Nice job

[@regonalbaldwin]

Thank you so much!