FLASHBACK!! SI Express: Keith's Crazy Canyon - Part1

SURPRISE!
Two years ago (January 2020) I made the last trip to Staten Island to visit my friend Keith DeFazio of New Level Auto before he moved to North Carolina for a new job.
/ onboardtech333kmd
This time we're diagnosing Keith's very own 2005 GMC Canyon 4x4 which he bought for $500.
Truck runs fine, until you try to accelerate hard or go up a hill. Then the engine SHUTS OFF, but restarts own after you release the gas pedal. WEIRD!!
Now it's January 2022, and the poor GMC Canyon is still NOT FIXED, and also blew a brake line :(
I'm heading down to North Carolina with a truck full of tools and an eBay ECM to help Keith get the Colorado back on the road :)
Stay tuned for the GMC Canyon REPAIRS in Part 2, and then:
*****LIVE STREAM THURSDAY, JANUARY 27th at 6PM!!!!******
Enjoy!
Ivan

[@MF-iy6oy]

KEITHHHHHHHHHHH BOY WE MISS THAT GUY!!!!! WE NEED YOU BACK HERE IN NYC KEITH!!! IVAN YOU AND KEITH WAS BATMAN AND ROBIN!!! LOVE TO SEE YOU GUYS WORKING TOGETHER!!!!

[@outofthinair1]

A shoemakers kid goes barefoot, and the Techs car stalls and has no brakes. Go figure.. This is a really good one, I've got a feeling there will be a plot twist some where along the line. GREAT video, I can't wait for the fix.

[@user-ee1ki5lz5e]

It is not his car; he bought a bad truck as a project. He has other vehicles

[@Cantante1963]

My wife: “how many times are you going to watch that video?” Me: five more times. I just want to make sure I understand most of what they’re saying.” (English is my second language )

[@n9wox]

Keith's timing is impeccable. Moved out of NYC in March 2020 just before all the lockdowns.

[@patrickcayton3072]

Can't wait for the fix and the live stream. Will be great to see Keith again.

[@DormantIdeasNIQ]

how does one hook up to the live stream? I have never done that...

[@MrAmorti]

@@DormantIdeasNIQ Activate notifications, and you'll get a ping from KZbin when the stream begins. Just watch the video, and instead of comments you'll have an interactive live chat box where you can interact with the guys.

[@dznuttzonyachin7499]

@@MrAmorti pretty sure these videos aren't live streamed because of editing. My guess he meant live stream on the data network

[@autoacoustics4938]

Check the engine harness , had a similar problem on a 5cyl that when the engine was under load from torque it would pull on the wiring

[@zeuscarver3112]

Given the history and the number of shops trying to fix it, I have to believe the ecm has been replaced already and didnt fix it.

[@jkbrown5496]

I had a brand new 1986 Mazda 323 that would shut off while driving full speed in traffic. Fortunately, it was manual so I could shift into neutral on the fly and restart without getting killed by traffic. Finally, fixed by a TSB on some missing ground to the PCM. Dealer was clueless up till then.

[@xerxes456]

Funny in Sweden they had the same symptom on Mazda 626 1986 but the dealer never got it fixed brand new car

[@sebry25ify]

you know it going to be a good one when Keith challenges you

[@chekelley6861]

I had an Envoy doing that exact thing. It was the terminating resistor that mounts on the rear frame had broken off it’s mount and was touching the exhaust ONLY when you drove up hill. It would cause those exact symptoms.

[@PineHollowAutoDiagnostics]

Very interesting!! This one is pre-CAN, so just class 2 single wire, no terminating resistors :)

[@chekelley6861]

@@PineHollowAutoDiagnostics actually it was a trailblazer. I’m getting them all mixed up🤣

[@zoidberg444]

Thats Nucking Futs. 🤯

[@kerryb2689]

@@PineHollowAutoDiagnostics I was thinking put a scope on the bus to see what's going on with no comm. Comm between TAC and PCM is it's own bus. Check 5v ref at TPS. I had a 99 Dakota that died in hot weather, started back up in about a minute. 5v to TPS was gone. I think the voltage regulator in the PCM was going into thermal shutdown -fairly common on dodge. Boneyard PCM fixed it, but it doesn't have a separate TAC. ....2 years later, this is beginning to sound like me now.

[@pvnugget]

@@PineHollowAutoDiagnostics can I have your number, I need work done to a few of my cars

[@neilmurphy845]

I loved these kinds of video's when Keith used to work on car's

[@crackertracker1176]

Good to see Keith on YT again

[@kidd1072]

It's good to see the legend again, we really miss him. Would like to see him having a new channel again

[@daveunbranded]

Over 35 it shuts down. That is perfect for Staten island.. especially with all them hidden cameras

[@MF-iy6oy]

OK I set up 3 alarms and I already told the wife im busy and not available Thursday after 5:30pm lol 😆

[@wskripka1]

You are very gifted individual , thanks for being there for us dummies.

[@martymurphy9627]

Sure be nice to see Keith restart his channel! Looking forward to part 2!

[@TheShop10]

This is Awesome! You brought back the man himself! I love a tough diagnosis with two of the best diagnostians on the planet.

[@BuggysTowJam]

Loved the diagnosis, and looking forward to the live stream. Really have missed Keith bestowing his knowledge on us. Be safe on your road trip Ivan. Liked!

[@kerrylewis2581]

I like how fired up you look for part two. Ivan and eBay to the rescue

[@unclemarksdiyauto]

Great to see Keith again, even if it is from a few years back. Looking forward to the live stream!

[@billziegmond4943]

SUPER COOL. I know what I am doing Thursday at 6 pm. It will be great to see Keith and you work together again. North Carolina Express here we go.

[@kboomarangfinch167]

Great to see Keith even in an oldie ! Hope all is well!

[@samdiamond7642]

LOL the computer needs a lunch break before it gets back to work

[@aldrinalmario1513]

Another interesting diagnosis Ivan & Keith! Can't wait to see if the new ECM fixes the problem. Either way, its a sweet 500dollar truck and if it does take another thousand to get it running right, its still a good deal. Looking forward to the next videos. Cheers!

[@rkan2]

In today's market it is a good idea... but not prepandemic when this was filmed :D

[@hxc7273]

Can't wait for the conclusion. The only other thing I would've checked before calling the ECM is pin fitment at the ECM on those powers, ground, and cmp/ckp signals.

[@jovangrbic97]

Has to be a broken solder connection power pin on the connector board, and the sudden acceleration jerks the pins to lose contact momentarily, the PCM 'reboots' which takes a moment then goes back to running, that way your scope powers and grounds would still look fine, but the PCM would be losing main power. Probably the hot at all times battery connected power pin. Even though it has multiple power inputs, one powers the main backbone which causes it to turn off.

[@daleturnley5882]

Great to see you again Keith! This one is a fun one to watch.

[@flatdaddio]

This is great! Looking forward to the fix and the LS..

[@ToolDemos]

That’s awesome Ivan! Can’t wait to see you and Keith back at it again.

[@keltecshooter]

This reminds me of my S 10 that would stall when it wanted to , drove it for days with everything I could think of back pinned / testing . Finally replaced the pcm and all was well !

[@brianw8963]

Love these tougher pixy mysteries! Have a safe and enjoyable journey Ivan. See Ya Thursday! 👍

[@alanhill8680]

I WILL BE TUNED IN. THANKS AND I MISS HIS VIDEOS.

[@stevemazzarella7212]

That’s awesome, can’t wait to see Keith again !!

[@brianmason8400]

Just seeing Keith in the thumbnail, am I the only one to hit LIKE before even watching? Yes, Ivan, we "like"and watch all of your videos routinely!

[@NewLevelAuto]

🤙

[@basshunter428]

Watching you guys chase that electronic phantom is a trip! Great to see Keith again! Looking forward to your live show! 👍

[@grownamansht4824]

The two masters at work love you guys love your content Ivan inspired me to go work in a garage and get learning some wave forms and data capture bless you guys keep inspiring and killing it

[@boilertech44]

Looking forward to the fix! And the live video. I will tune in while at my regular job in the Boiler Plant.

[@alexb9039]

This looks like a start of a movie sequel. “Speed 3, A Mechanics Perspective “. “ if we go below 35 miles per hour, the engine will explode”

[@twistedwrench490]

Come on !!!!!!! This is driving me crazy ,Im completely out of ideas. This shows me how much I don’t know 🤷‍♂️. Damn it Ivan this is going to keep me awake tonight thanks man!

[@kennydoolarchan9515]

Nice to see the diagnostics experts at work.

[@131R30]

Fun and interesting to see two knowledgeable diagnostic geeks exchanging ideas and thoughts!

[@robertaccorsini4663]

Keith is a good friend/teacher to spend the time to help train Ivan

[@rickd6421]

Great interesting case study! Look forward to the live video to find out if the ECM fixes the truck. Performing structured logical tests to eliminate possible causes to save time and money. Brilliant!

[@v8motors.]

Loved watching Keith and Staten Island express vids, I think Ivan regards Keith as a mentor. Great watching your cogs whirling to try and figure it out. I think it's bad tire air!...

[@dannyhubert5722]

That's awesome myfriend thank you besafe drving to North Carolina can't wait buddy happy New Year

[@themechanic6117]

Loving the diagnosis video so far. Can't wait for part 2 and the livestream on Thursday 👍

[@baukevandijk61]

Hi. First of all, I love your methodical way of diagnostics. Being a train technician myself I'm still trying to be as methodical as possible, just because of the sheer size of a train. I had a similar problem with my Tiger 955 motorcycle. After a cold start, full throttle would result in engine stal for a second and come back alive again. Didn't put much thought in it. But once on a hot day i had a crank no start. Intermittently the cooling fan wouldn't turn on, causing a overheating condition which made the ECM block a start. After carefull deduction I exchanged the ECM, because that was the only part of the fan controlside I couldn't guaranty to be good. Guess what, no fix! After studying the wiring diagram again I concluded that the intermittent stall and fan operation could be symptoms of the same problem. It was a power relay. Just like Keith suggested at the 14:48 mark. Cleaning the relay russian style and no parts required fix. Keep up the excellent video's. Best regards from the Netherlands

[@baxrok2.]

Very clever to short a sensor to see if it generates a code. Looking forward to the live stream. Thanks guys!

[@DaveSender66]

Have a safe trip Ivan enjoy the adventure. Looking forward to seeing you and Keith together again. Only thing better if we could get Bernie Thompson involved in that live stream 😀!! See you Thursday night!!!

[@coloradodirtriders]

super awesome to see keith can't wait to see the fix

[@AP9311]

Wow, in space is 2 years!!! Initial diagnosis then nothing happens, wow. Never seen the ecm being bad after that momentarily power loss, that is so strange! Look forward to the live stream in part 2! This should be fun to see Keith and Ivan banter and figure out the problem, lol!! Great part 1! 👏

[@agmc4me]

Go Ivan. Hope it's warmer down there.

[@stationaryenginesworldwide]

looking forward to this guys the fix !

[@donnieboger7666]

Hi, long time viewer in NC. Glad to have you down south.

[@cliffordgallagher4531]

Looking Forward to the Live Stream Ivan!

[@lawrencepevitts2434]

Your channel is one of the few I can like before I even see the video. Keep up the good content and good videos.

[@nelsonnarciso1791]

Looking forward do see if ecu works. Great video guys

[@mrkttrdr2919]

Awesome sauce, I have a 05 colorado with inline 5, never had any problems, except replaced # 5 coil last year at this time 174,000 mi still runs great, getting a fuel smell , gonna change pressure reg, and cap, can’t wait for pt 2

[@SmittySmithsonite]

HEEEY! There he is! Feels like forever since we've seen Keith! 👋 MAN that is one tough one! I'd have been frustrated BIG time, lol - it doesn't take much these days! That is definitely a strange one - never heard of or have seen those symptoms in anything, ever! Can't wait to see if that computer fixes it. I can't see what else it could be at this point! Enjoy NC - I went through there 3x this year! I absolutely love it down there. Wish my wife was onboard with moving, because I'd be down there in a second. I love heat, so FL is more my speed, but I'd be just as happy in NC I think. Anyway, we'll see you fellas on Thursday! 👍😎

[@rayfalcone6897]

cannot wait for the results ill be here !

[@TheShop10]

Guys..... Keith is on another level. I would bet anything that he already knows what's wrong with the truck. He used to figure this stuff out mobile in under 10 minutes.

[@NewLevelAuto]

I wish that were true , but this was just before my big move and I didn't get the chance to properly fix it yet.

[@TheShop10]

@@NewLevelAuto Well it's going to be awesome to see the Staten Island Express back in action for a few days. Thanks Keith

[@raula.flores1185]

That's crazy! The more extrange the problem, the more experience you get.

[@craiggoodwin9704]

All that traffic would have me visiting only once or moving to North Carolina. I had to replace the computer in my car last year and felt the same dilemma. You check absolutely everything else before you bite the bullet and buy a replacement computer. Waiting with bated breath to see how this turns out and also to see North Carolina. Thanks for Sharing!

[@mikeeustice4452]

Looking forward to it, I hope Keith and his family have been safe, would be good to see Rocco again, still subscribed to keiths channel 😆

[@dendkmac]

Will tune in for it poor Keith kept it LOL, should be fun to watch.

[@alrifainidal]

great diag, nice to see y'all

[@Ulrich_Wolf]

Reminds me of my own 2000 Jeep Grand Cherokee with the 4.7L V8. The PCM was narcoleptic JUST like this. We checked cam sensor, crank sensor, anything that could pull down the 5V REF, and it was all fine. In the end, just a bad PCM, as it was positioned too close to the right exhaust manifold, and was basically barbequed. (Thanks, Chrysler!)

[@HouseCallAutoRepair]

Super awesome to see you guys together!! Fun challenge! Keith, I thought you said no hints... lol

[@jeremyanthony9300]

Iva, Good to see you and Keith back together. Excellent Video man. Hope you have a safe trio to n.c. And as always , take care and be safe.

[@saaaron5213]

This is a good one.. I had a very similar issue on a 99 chrysler 3.5L. The only differences were the length of cut-out time, and when the pcm came back to life the CEL came on momentarily (just like when you first turn the key on). The engine cut-out time was usually around one second or less. Anyway, it was in fact the PCM. A used one completely fixed the problem.

[@michaelgleason4791]

Nice to see Keith. It's been quite awhile!

[@tam1381]

Sounds Awesome can't wait.

[@williamhague2768]

Hope you made it to NC safely...

[@raymondjones7489]

Very cool!!....I look forward to it👍👍😎

[@biggdawgg7455]

My 2014 GMC Sierra,did same thing , under the fuse block in engine bay ,a Negative cable was undone , fixed that & no problems since.

[@richardcranium5839]

wife's interpid would do the same thing only it set a cam sensor code. ended up being an in harness splice that broke on the v feed to the cam sensor. you could ride around all day until it was warm and you put your foot in it. only found it by moving the harness loom just the right way. appearantly the same way as the engine torqued. it load tested and volt dropped ok.

[@nickmayo2974]

Definitely looking forward to the livestream! One clue you mentioned was that it happens most above above 35mph. Does this truck have a separate ECM for the transmission? If not, could one of the speed sensors on the transmission be shorting a reference voltage to ground at that speed?

[@gediminasgribauskas4714]

nice video guys,thanks

[@Peter-pv8xx]

Looking forward to what i know will be an epic event for us fans, the only thing I'm concerned about is the weather in the south, they're getting more winter than we are in the northeast.

[@jovangrbic97]

*Open PCM housing, check board for bad solder joints at power pins!*

[@jordydereus]

We love you Ivan and Keith. !!

[@randym.4209]

You guys are going to break the internet on the 27th!

[@PineHollowAutoDiagnostics]

😂😎

[@tcasey251]

I would do a drag test on connectors at the ecm before replacing the ecm.

[@dustcommander100]

The conclusion ought to be interesting! I've had a couple cars with electrical issues that were extremely intermittent. One car malfunctioned only once in the 5 years I owned it, and the other malfunctioned only twice in the 13 years I owned it. Some issues, you just can't find - but when you can make it malfunction, maybe there's a chance! When you shorted out the 12V on the cam sensor, maybe it needed a heavier current draw? The other thing I was thinking is that when scoping the ignition and accessory inputs, there was a connector between the test point and the PCM. And maybe the test done by switching the ignition off and on wasn't quite representative of losing the input to the PCM because more than one contact was being lost, as opposed to losing power thru only one with the other functions being maintained.

[@comporangegt]

Need an NC meetup! I’ll bring the dunkin coffee!

[@robc5955]

Nice to see Keith again, miss his channel, but understand y he stopped. Probably won’t see the live feed, but will deffo watch the vid I thought any minute now Keith’s gonna go “ah but have you tried this”. I have no real idea what it is, dry joints in ecu? Let’s find out.

[@theadventuresofjavier8698]

Two great minds.

[@mrblonde2013]

Fascinating case Ivan. looking forward to the conclusion. Would there be any diagnostic value in measuring the current that the pcm uses on the power supply wires? I wonder if there is a change when the pcm fails? You said "overloading"...so that got me thinking. Is not something I ever tried myself, but that is now going on my list of things to measure on my own car to get a baseline.

[@georgebell3964]

Great video

[@mekenzim6413]

This just can't be better!

[@poq600]

Hi Ivan. Just saw first minute. My heart wept with terror when the passing vehicle showed up. I've been saying for years how a newscaster will eventually get run over soon because they are always near traffic. A newswoman just got hit in West virginia. Be safe dude. We love your channel too much. Lol

[@djosbun]

There's nobody better (or smarter) than Keith DeFazio.

[@Phantomas2011]

WOW a case study with Keith AKA Einstein 😀 (he is in my book from the videos I’ve seen about his knowledge ) Ivan your skills are also AMAZING!!!! Nice job guys! Wish I lived closer to you guys so I could hire your services and be done with it!!! It’s teeth cutting for me, I guess 🥶 Love the video Leor

[@jeff7.629]

Late 80's early 90's Fords first step was to check for 5v reference at the TPS. Reason being was the bulkhead connector would slightly loose connection under certain conditions.

[@waiting4aliens]

If one line is crusty, the rest in a NY car are likely to be so also. And ready to puke. On truck like that consider a prebent steel or stainless kit for the brakes. Install time is less than 1/3. I am going to sign up for a class a the local community college to better understand these highly informative and well produced videos. Stay well.

[@johnpavon799]

I agree there must be a circuit which is shorting out under heat acting like a heat sink! not enough to trigger a code, yet clearly a break in power side of the PCM.

[@rons9197]

Looks cold!

[@thehemiolds455]

Weird symptom mind blowing 🤯, but the greatest thing about this video is two masterminds at work is to chase the unknown like the "twilight zone"😁👍😎

[@juweekhan]

Great video all in suspense