Jeep Grand Cherokee: No Start / No Crank

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In this video I have a look at a 2009 Jeep Grand Cherokee that was towed in from another shop as a no start, no crank. It doesn't take long to determine that the ECM is at fault and will need a new one. -Enjoy!
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Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair 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 South Main Auto Repair, 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.

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7 фев 2019

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Комментарии : 485

@SouthMainAuto 5 лет назад

Lisle 69300 Master Relay Test Jump Set: amzn.to/2MU2EWh For anyone wonder, the new ECM did resolve the issue with the fuel pump running continuous also 😉

@robertmartz9812 5 лет назад

What relationship to the constant fuel pump command to the no command on ground side switched SDR circuit ? Internal PCM short possibly ?

@tonyrum5808 5 лет назад

Wooo Hooo!!!!

@Mr100bitcoin 5 лет назад

Open the ECM and put them super sweet soldering skills to work. 😳

@TheKillerMarine 5 лет назад

@@Mr100bitcoin Was just about to say that!

@SierraOne 5 лет назад

Whoa I was holding my breath on the poor fuel pump running and running, appreciate another find video (with closure)!

@donnjames297 5 лет назад

I would like to make note that the trust that you have enlisted in your community speaks volumes of your integrity

@wyattoneable 5 лет назад

These are my favorite videos/case studies. So much can be learned by working though the diagrams with your coaching. You explained it well, thanks again.

@Longtrailside 5 лет назад

Took the words right outta my mouth Wyatt. He made something very difficult for most and made it easy to follow along. Maybe the shop that sent this to him should watch it for training purposes.

@neverstoplearning382 5 лет назад

@@Longtrailside you are correct.

@orville58 5 лет назад

You rock dr.O you don’t realize the the amount of knowledge that comes out in your videos that isn’t really part of the main diagnosis thank you very much for taking the time to bring me along

@neverstoplearning382 5 лет назад

Just a master class. That is all I can say. If somebody has learned something from mr O, that guy is me. Thanks to mr O and his great way of teaching, I have become one of the most trusted technician around my area. I can't thank you enough. A Chilean born guy that is just kicking some butts.

@wjdsr64 2 года назад

Thank you 😊

@treckie7274 5 лет назад

Eric you're a damn good mechanic. Im not a mechanic but thanks to you ive been able to fix and diagnose all of the issues i have with mine and my wifes cars. Thank you for your awesome videos and the hours of entertainment ive gotten from them!

@BlazerGuy1983 5 лет назад

Your not kidding about all the dirt roads up your way. My brother and I stopped in Tuesday to meet you from Pittsburgh and on our way home our stupid GPS took us down a dirt road that turned into 3-4 inches of mud. It took us into what looking like the middle of someone’s farm. 🤣🤣 I turned around since I didn’t want to get the car stuck and went another way. I should have brought my Jeep! Haha hope you enjoyed the Dunkin Donuts. Nice to finally meet you!

@nowayout73 5 лет назад

I'm amazed how smart you are. So nice to see honest mechanics out there instead of part swappers who say "oh yeah, that was bad too". When it clearly wasn't.

@benyunik9314 5 лет назад

I learn so much by watching your videos. Especially the diagnostic side of things. Thank you for teaching all us poor diy' ers Dr O.

@nickdagreek203 5 лет назад

It’s great that your the mechanics mechanic.great video as always

@63256325N 5 лет назад

What else is there to say but great approach which lead to the fix! Like I said before, the folks in that area are lucky to have your skills to call upon! Thanks for the video.

@comingundone27 5 лет назад

That scan tool may be our next shop purchase. Just had a Bosch rep in yesterday to show me around the tool. I like it!

@billmaxfield7831 5 лет назад

So much i learn from your videos,great diag ,your willingness to disregard the previous shops mess and start from scratch is truly vital and you convey that. ......trusting your scan tool as far as you can throw it...LOLtoo funny!!!!

@Spudstrodamus 5 лет назад

I love these electrical diagnostic videos you make it look so easy. Keep up the good work

@cornwasher 4 года назад

You are a true genius at analyzing these problems. I envy your depth of knowledge.

@MiguelFlores-jp1ss 5 лет назад

Just saw your video. The steps you use to diagnose are the key to finding and fixing the issue. THANK YOU for sharing your knowledge!!!

@dougtexas 5 лет назад

Back in the 70's, I had a mobile auto repair business in Kansas. I got a lot of jobs where the shops were up to their *** , and they would parcel out to me work that would be worth my time, but not theirs. Was a great relationship for me and them. I knew my limits at the time, and wouldn't take on something where I might embarrass them or myself. Took on a few 'challenges' and learned a whole lot. Your area is fortunate to have you there. Great job on the diagnostic videos!

@johnhugon8305 5 лет назад

I was an Auto/light Truck Technician for one product line for 35 years and never did master their product. It just amazes me how you can work on many product lines; repair them plus repair them in an efficient manner; then run a business and make very instructional videos. You sir are a very inspirable person! Being in this line of business for the years I was in, very few people can do what you are doing.

@jamesshanks2614 5 лет назад

Too many electronics. I remember when the only electronics you had in a vehicle was the voltage regulator built into an alternator if you didn't order the optional radio. I miss the old days. Enjoy the videos.

@thomaswilson8634 5 лет назад

One day them arabs over there across the big ponds are gonna top 911 with a EMP. Then we wont have to worry about ECM an lots of other Electronics. Back to horse an buggy days. Lol lol lol

@jkbrown5496 5 лет назад

Why not just go to the vibrating coil voltage regulators mounted separately?

@thomaswilson8634 5 лет назад

@@jkbrown5496 I remember that on my dad's old Ford 1954 f100. It had a 239 CID v8. He took 292 out of a 1960s Ford station wagon with a 4bbl card an put in that truck . When he went to sell it in 1984 he put the 239 back in it.

@ischmidt 5 лет назад

@@thomaswilson8634 Not true. A lab did a big test in 2004 where they exposed a bunch of different makers' cars to an EMP. The result? 100% of the cars cranked, started, and drove after being hit with a full-strength EMP. Most didn't even throw an ECM code.

@thomaswilson8634 5 лет назад

@@ischmidt Well I was in the air force an that's what we were trained to anticipate. Was that lab ran by a bunch of monkeys. Lol. Explain why billions have been spent on subs an even air force one to make it emp proof. I dont believe that lab not one bit. Sorry.

@johnmckamy6398 5 лет назад

Thank you Mr Eric you make it look easy but I know you work hard to do all you do and still make videos for us to learn .

@davidragland3535 2 года назад

Great video. Very thorough. It helps me out alot. Thank you for explaining everything as simple as possible. I'm able to work on my own vehicles and figure things out but, by no means a veteran mechanic. Thank you

@ToXSicK1340 5 лет назад

Mr. O'..... The Automotive Whisper! You never cease to amaze me, Sir. Thank you very much for all the GREAT Content.

@ABCD-eg5ky 5 лет назад

Amazing trouble shooting process. Wonder how you learned to be so great at this. You always have such a great attitude too. I get more frustrated! Thanks for making these vids.

@likearockcm 5 лет назад

I have a 2003 tacoma 2.7 ,low mileage and very little rust.Although I may never need your wisdom ,I still enjoy watching and attempting to learn !

@MrGardman 5 лет назад

Always entertaining and always informative. Eric, you are the man!

@8power0 5 лет назад

GREAT VIDEO , LOVE TO SEE THE TOOLS IN ACTION AND TO LEARN THE DIAGNOSTIC TECHNIQUES ALONG WITH THE THOUGHT PROCESS PLEASE KEEP THESE VIDEOS COMING ALL THE BEST AND RELY LOOKING FORWARD TO THE NEXT ONE THANKS SO MUCH !

@germanjesus 5 лет назад

I’ve seen that 3 times on that exact make model and engine. I found that it was bad grounds causing that issue with the ecm and the ecm wasn’t even bad I swapped the bad ecm into another one and it worked. Another great video keep em going im glad im not the only one working on junk.

@robertmedina6875 5 лет назад

People watch your videos cause not only are you and mrs o the nicest people in the world! You have real talent Eric. I know guys that been wrenchin along time and don't have the understanding you do of these computer systems on cars! Love the videos and will put my money where my mouth is as soon as tax returns start flying!@ thank again!@

@richardfoster5361 5 лет назад

Awesome diagnosis eric, I love these videos. I like a good challenge, keeps you sharp and on your toes.

@sneakysnake109 5 лет назад

Took a minute to understand how the tests showed the wires to/ from the ecm were good, but after a bit of thinking made perfect sense. Great video. Thanks bunches

@petemedina8446 5 лет назад

Interesting diagnosis and repair. I noticed you do a lot of diagnostic work probably explains your multiple scanners. I worked at big company owned shop and all we had is one OTC scanner per store plus we had Mitchell though sometimes the diagnostic tech had his own scan tool. Keep the videos coming they're all interesting and informative.

@edwardkopp1367 3 года назад

Just received my SMA shirt and love it!!! Thanks Eric for the time to make all these videos!

@kellyspeppers 5 лет назад

You take on all the problem child cases from other shops. You the man!

@barefootgamer2706 5 лет назад

You are a genius, in the diagnostic world. Learned so much from your vids. Thank You!!

@tonygriffiths2485 5 лет назад

This isn't mechanics, this is engineering. The skills demonstrated are the same as analogue component fault finding, pretty near. Am familiar with that from way back, now out of practice, but watching skills that meet with memories of using logic, knowledge and understanding to get there quicker. My boss complimented me once for finding a noisy variable capacitor, I then demonstrated that by wobbling each of approx 20 caps in a small area (the vertical amplifier of an oscilloscope) and found the same fault in 10 seconds. I had been working on it for 2.5 hours ! He shrugged and said "experience" as he walked away, happy. Mate you have a kind understanding of fault finding, you share ! EVERYONE within 300 miles of you who own a car/truck is very lucky to have you. An example to the rest of the industry. HARD WORK ! The true way to experience :)

@Airman.. 5 лет назад

Its always a pleasure watching your videos mr. O and family Keep em coming

@miztatone918 5 лет назад

Perfect way to start the day thanks for the video good sir.

@archiemcgregor701 5 лет назад

mr o i work by myself all the time and no help to call upon so ive solved the push it in problem by mounting a winch in the floor of my shop under a workbench i use a harbor freight 110volt but a 3000lb atv winch and a battery will work and a wireless controller is awesome as well . this allows me to put any vehicle in the shop all by myself and i dont have to strain and push , and i dont have to ask for help lol just thought id pass along the idea thanks for the great videos its a pleasure to watch an honest man doing a great job

@mr.nobody9630 5 лет назад

Wow. Eric O. You are a Genius in diagnosis cars. I understood very little the whole process.

@badboy57100 5 лет назад

Hi Eric been watching your channel from just before xmas finding it very intresting also that door bell of yours is sending my dog mad its thinking its ours ? keep your good work coming,thanks

@rickh6963 5 лет назад

I'm glad I'm not the only one with a crazy dog!!! My dog does the same thing, and his door bell sounds nothing like the one in my house.

@lasegundaenmiendagmail8170 5 лет назад

I love these videos, a great way to learn!

@vlstyles 5 лет назад

Wow a PHAD Bonus segment! You're learning!!

@arthurfricchione8119 5 лет назад

good video Eric thanks for showing and explaining everything. Stay warm Artie ❤️️

@JenniferFuchek 5 лет назад

Another great video from SMA ♡

@AntonioClaudioMichael 5 лет назад

Love the relay tester you used

@datikit01 Год назад

I encountered the same problem on a 2017 Jeep Grand Cherokee 2 days ago. i suspected the ASD then after a few tests I decided on the ECM. The car was in a parking lot w/ 100*F outside. I made the decision to call a tow truck and take it to a dealership. Half a day later the dealership found the ECM to be bad they are not as good at troubleshooting as you. Love your videos you are brilliant!

@mobilemechmantim773 5 лет назад

Dude, I just watched the thumbnail preview of this video and the close captioning said "Hello, and welcome to cell phone". I don't know why I thought that was hilarious! Must be the sore throat coming through. Oh, thanks for another great video, by the way! 😁

@richard1835 5 лет назад

Another great diagnostic video. Thank you. Thumbs Up

@bradolson1102 5 лет назад

Nice video…. I ran into a similar issue with the kids 97 grand Cherokee ended up replacing the PCM ...runs good once again.

@sailme2day 5 лет назад

Eric O' wow , you set the standard when honesty and ability is so rare. did not need the other shops fuel pump replacement , oh goodness, throwing parts at the wrong problem ... There should be laws to protect customers.I wonder what the customer had to say to the other shop ? Maybe that should be off camera ? ouch $$$ It happened to me . cutting off while driving , not the fuel pump , but the distributor. Skills and honesty matter. thanks , great fix it video :)

@62ejo 5 лет назад

Thxs Eric,never boring always the 'BEST'....

@GodofThunder66 5 лет назад

Always seems other shops can never solve the problem so they bring it to SMA.Eric always fines the problem and fixes it..What it comes down to is never take it to another shop or dealer, always take it to SMA they will get the job done right the first time..

@danielmcgilliss697 5 лет назад

Thanks for the troubleshooting technique. Have chased my tail only to find it was something simple as a blown fuse that was overlooked the first time.

@olspanner 5 лет назад

Great diagnostic skill, excellent work!

@weldingjunkie 5 лет назад

I had that same issue as far as no crank no start no code on a 05 Canyon I chased it down to a ingition switch replaced it then it was crank no start found that the guy the customer bought it from cut the blue and white security wire, fixed the wire and boom! Unreal. Mitchell wire diag saved me. Great find on the ECM. Crazy how much these parts go bad nothing lasts anymore.

@jimrosson5697 5 лет назад

Man you're such a good mechanic and I'm getting ready to retire and I love cars and I would love to learn so much from you I found it in Upstate New York at me just to hang around go get parts sweep the shop just to learn

@leroyjr.4464 5 лет назад

Thanks for the closure Eric. And the entire video

@mikecont9742 5 лет назад

Great diagnosis and fix step by step video.. Thanks for taking the time...

@Mr.G626 5 лет назад

been a subscriber for a while now, but you're definitely in my top 5 favorite youtubers.

@chrischris4448 4 года назад

Your the best RU-vid mechanic, great result with a great actitud im learning from u

@125sm3 5 лет назад

Great diagnostics Eric O.

@ekop1778 5 лет назад

JEEP CHRYSLER ARE KRAP GET SUBIE ,OR HONDA

@jdub6782 5 лет назад

Thanks so much for not letting us hanging....awesome as always...!!!!😀😀

@mikechiodetti6737 5 лет назад

Ahhhhh, I jumped in to quick. Lucky the wrecking yard PCM worked! Great Job!

@scottadkin6275 5 лет назад

Great Video , always walk away with something new !!!

@Joshoptimus 5 лет назад

Everything understood even with the all the interruptions, came through loud and clear. Can't hardly wait for the follow up vijeo

@marty0715yt 5 лет назад

Whewww--- I was worried about your fav. hat. Glad its back

@dukeman7595 5 лет назад

Never cease to amaze me Eric. Why can't I have someone within a 50 mile radios that can fix my no crank cts.? G.M. dealer couldn't, and gave up. Been starting it by jumping the starter relay.

@apprenticefelix7740 5 лет назад

gen 1

@gvvq-pi5ml 5 лет назад

I like your style Eric, hopefully ECM will cure it, looks like you have plenty of work anyway..Fred in England.

@n.roosta7608 5 лет назад

Hi Mr. O. I think you should change your slogan to: If you can ´t do it, I can di it. Another great work from a great person.

@fire7765 5 лет назад

Thanks for the excellent video.

@roblord2619 5 лет назад

Good morning Mr. Eric O. Every time you say the vehicle you work on comes from another shop makes me laugh. The owners should just come to you in the first place. Lol. Have a great day and stay warm. Rob from Oklahoma!

@paulkirkland1535 5 лет назад

My thoughts exactly. Eric O is definitely THE man! I've not heard or known of a vehicle he,Ivan,Keith,ETCG or scanner danner(Paul Danner) cannot fix. IMO these are the best in the USA or even the world period! These guys could fix the space shuttle IMO. Again great video Eric O,have a great day.

@TheMechanicj 5 лет назад

Unfortunately I am that other shop lol not literally the one in this video but I’m a cheap shop I have a place in life example I have a actrom scanner and no heat in my shop I get nuts and bolts work mainly yes I have diagnosed computers etc but it’s mainly guess work...when I can’t fix it it goes to the big boys like south main auto

@jkbrown5496 5 лет назад

The owner wouldn't know this was going to be complex issue. Possibly the fuel pump had burned out running all the time after the ECM failed and needed replacement. Avoca can't support a full time diagnostic tech, but neither does it need a couple dozen. But it apparently does keep a fair number of shops in business. So it looks like Eric and the other shops have a nice informal network set up going.

@Really2u 5 лет назад

@@TheMechanicj you are not a bad shop. Not by any means. You are getting better with each one you put back on the road. You also are there to save those like me that thought i could fix it. Then just screwed it up even more. None of the commenters on here should make you feel under used. Since you are in business and staying that way you are doing what you do good. Eric didn't just bounce out of his mother with a scanner in one hand and a wrench in the other. Everything comes with time experience and study. So don't feel bad. Don't loose hope. Never stop learning. Those customers that you give to another shop. They will respect your honesty. They will come back to you for that. Its the shop that says they fixed it and it breaks as the customer drives away. Those are the wrong guys. Eric says it as well. If i can do it so can you. Don't forget that.

@Anonymous-it5jw 5 лет назад

In a small town, you keep your friends by respecting their customers and helping them out when you can, and by not being greedy. Seems like that arrangement is working pretty well in the Avoca area.

@Doplar12 5 лет назад

Dear Eric, I enjoy all of your videos but the 'nuts and bolts' ones are my favorite. However I do appreciate and am impressed by your skills with all the diag equipment and wiring diagrams. Your explanations as you work are mostly comprehensible even for someone like me who will never have that equipment or those skills to apply to a DIY job. God Bless and when you are ready to move South (North Carolina is a beautiful State) please let me know. You would love working on my 6 yr old, very clean and rust/salt free Honda Accord Ex. And I would love having you work on it. Jim

@Master.Elekchicken 5 лет назад

I love how youtube does the cc before you click on a video. Its diffrent every time. Instead of south main auto sometimes its "self made auto" or "cell phone auto" its always a surprise!

@joedorosh 5 лет назад

LOL "There's that damn compressor again!" I love that compressor! It means I'm watching a SMA Video!!!! :D

@cstar2839 5 лет назад

You do good work! very good video, I actually learned something.

@mejiac6313 5 лет назад

I like that scanner,and is fast too,i know you moving fast and the scanner is perfect for you

@PhatboyHD88 5 лет назад

I am truly impressed by your knowledge. Its way past my pay grade lol,, ill be watching your train of thought and find i don’t have enough bread crumbs to find my way home lol.. of course I’m not a mechanic , impressive none the less ..

@mikechiodetti6737 5 лет назад

Nice quick diagnostics, on to part 2.

@martinschaffmeir7729 5 лет назад

Good video sir and great work

@JMassengill 5 лет назад

once again showing that testing is key! I really thought it was a relay and I was WRONG. Great video. (Full disclosure, I no longer bend a wrench to make a living so any input I had would be a guess! )

@vincescalise4821 5 лет назад

I really thought it was A relay also I would be too afraid to Replace the ECM but then I’m not Eric O

@georgeshadrick640 5 лет назад

With love thank you for your video and service

@pyro323 5 лет назад

All that for a faulty ECM. Real nice Chrysler. Nice work Eric O!

@bigdaddypat3697 5 лет назад

Excellent Video and Info as always Mr. O... SMA is the best out there

@raymondlodge260 5 лет назад

Love your channel, would love to see some videos on the ford's power shift transmission. Fan from the UK.

@BigDaddy_MRI 5 лет назад

I want a hoodie from SMA. “There’s that damn compressor AGAIN!!” With the SMA logos, natch. 😂😂 That compressor out-foxes you every time. Love the video!! A Chrysler ECM failing? UNHEARD OF!! Jeez, Eric.

@tvento 5 лет назад

You are really good at what you do.

@juliopadron 5 лет назад

Hey Eric, great video, keep up with the good work! I think the scanner have a bug in the display list when you try to customize the view on bi-directional controls. Can you hit the sort a-z button on the cuztomize screen? It Is bad, but I think this will be a workaround and will allow you to select at least 19 different items (no 02 related).

@hillbillyrigrepairs1814 5 лет назад

Could you show me more of the programming or relearns of PCMs and modules in the future. Maybe what modules require a pass-thru device etc. thanks

@javaidmalik1 5 лет назад

Sir thanks 👍 your good video your the most favorite of Machanics like me I learned lot from you and change my living

@AntonioClaudioMichael 5 лет назад

Great video Eric O

@harrisonmcdowell4885 5 лет назад

Excellent Video Eric O. Always a pleasure to watch and learn. I'm a young mechanic learning my way and id would be keen to see if youd sell me one of your old scan tools that you use in your videos. Happy to pay for it and ship. Thanks, wait to hear.

@emerymidence4585 11 месяцев назад

He’s vídeos are very helpful Thanks a lot 👍👍👍

@FoxHole345 5 лет назад

You need a shirt/hoodie that says “There’s that DAMN compressor again!”

@johnlenz8221 5 лет назад

Great minds think alike! Should've read further down the comments before posting mine.

@throttlebottle5906 5 лет назад

I think he should just convert it to run 24/7 and just waste the air. lol

@brenthartline4417 3 года назад

Lol all small shops are the same. Me and the guys at my shop always say the compressor is bluetoothed to the phones. It always comes on the moment we receive or make a call

@drgonzo3237 5 лет назад

Nice work, Mr O. I have the same Jeep with half the miles. Hope this repair isn’t in my future!

@benjaminunderwood12 5 лет назад

I don't know what it is but I have watched a lot of RU-vid because that's what I like doing I like your channel because I just love it but yours the only one that blacks out and I have to go back and restart it again I don't know what that's all about but I'm just letting you know I don't know if anybody else is having a problem or not but keep up the good work God Bless America jeeps and BBQ