Wow 😀

Had the same issue where a ground wire wasn't tighten properly on an engine block for a nissan car of which someone was working on. It was located under the intake manifold near the starter. Crank no start majority of the time then magically starts when it feels like it. When i touched the wire and saw that it was slack i jumped for joy cause i knew that was the problem. Tighten the ground properly, installed everything, turned the key and starts one time with no hesitation

It should be mandatory for every mechanic to watch your videos at least 5 hours a week after watching every video start over until they have skills as a real mechanic. I have been working on my own autos for over 60 years I wish I was younger so I could be more in touch with today's technology. I never miss your videos like always great thinking.

I have noticed in the comments some call it earth instead of ground. Is earth what a ground is called in the UK?

Excellent work, Ivan. I had a strong suspicion that it was a bad grond. The only problem would be isolating it. Your technique was fantastic!

Ivan, that was awesome troubleshooting!! My big toe looked like your thumb but it's almost healed. There's nothing like smashing a thumb or toe. LOL!!

I bought a low mileage Corolla with an automatic transmission once that acted crazy. It turned out to be the speedometer. I pulled out the cluster and replaced only the speedometer with a junk yard replacement and it drove like a new car. Toyotas are a different breed.

There are a number of funky ground points on the metal plenums on those 1MZ/3MZ engines. It's shocking how many CELs & mystery driveability problems have been created by people doing spark plugs as maintenance and missing a 10 or 12 MM ground fastener during reassembly. There is some truth to the idea of not touching old Toyotas unless they're really broken.

Ivan, you are a total Guru. I'm sitting here thinking from the first episode "Bad ground." (Erik O taught me that). You showed the process from "I think" to "I know, for sure."

Wow, amazing. Explains why the car was surging too! Idle air control ground was affected.

I have a matching smashed thumb like Ivan's!

wow, sudden engine replacement no closure on why.

I just want to know how many Russian curse words were uttered when Ivan smashed that thumb?

I'm from London England. Ivan is the best. You should change your middle name to NO PARTS REQUIRED! now we can totally understand why the Mercedes 55 AMG SLK was shipped from Florida. It came from a customer who is tired of part changers and bs rip off stealerships. Ivan is what mechanics should be. Along with Diagnose Dan and Eric O. God Bless KZbin..

I called a bad ground in the first video based solely off symptoms, although I said on the fuse box or relay. Well done Ivan.

Endlessly cool! Well done!

Great job!!! That is worth two pats on the back!

that was a cool scope capture

Refer to my comment part 1... Exactly what I said, where I said......👍😊 Good catch Ivan.....👍😊

That was a good one.. your the man. wish there was someone near me in the midwest that was this good. worth every penny.

Please help me to understand Why a bad ground produce vlts ? Is that produce by the icv? Thank you

At first I tough was an alternator issue

Good job as always Mr Ivan Alexander , your videos are amazing every video that you posted I’m trill about cuz I know I’m going to learn something. Your cases are fenómeno cuz they are very rare . Keep pounding

Interesting case study just a loose ground with 12mm wrench

I glad to see I am not the only one that gets excited when your logic deduction and scope capture solves a problem. NICE Job my friend. BTW Hey Amanda 1 week until the Kentucky Derby!

Awesome video Ivan and great diagnosis. Once again you have shown that patience and the basic skills can move mountains. Keith would be proud of you on this one and I loved that money shot moment with the scope seeing that 2 volt reading.....Priceless!!!!!

Fantastic investigation!

I'm thinking that the master tech was told not to fix it, it's a dealership after all and dealerships sell cars, specifically new cars, so they really don't want to repair an old car

you do that well check all the symptoms take good note check logic on diagram you are very smart

My initial guess was a ground affected by a twisting/moving engine...

Amazing diagnostics.

Awesome video ! Thank you so much for sharing. I do have 1 question. My '89 Silverado with a 5.7 goes into what would normally be a choke mode, slightly higher RPM as I drive. If I throw it in neutral at a stop light, jab the throttle it kicks down to a correct idle. Any ideas ? Thanks !!

Wow, you're jumping all over the place tracing through a bunch of circuits that aren't the issue. While some people may find it interesting seeing your thought process I would much prefer that you figure it out 1st then just take us through the pertinent wiring. Makes you look smarter and far less confusing for those of us trying to follow where you're going. 😊

Great work Ivan, a thorough diagnosis, and not shooting from he parts canon like others….But now you keep us hanging for the conclusion !

Would applying some moisture prevention or other prevention be advised prior to merely tightening the ground bolt?

the thing is Ivan, and you probably know this all to well, independant guys, like yourself, are solely dependent on your skill levels, because you have no back -up, where as shops. i.e. toyota, these guys are under the gun, are harassed with time constarints and cannot afford to due what you and others do, that is, take your time, be thorough, and not be Greedy! working for the man is a greed induced system. i ahve been there. it sucks. working for yourself is a survival technique which embues self-respect and compassion for others,i.e. your customerrs, because like yourself, we all pay too much for somewthing.

2008 Volvo s60 2.5t is stalling. I can’t figure it out, seems like a very common issue with no solution. CODE P0089 Maf changed Fuel filter Fuel rail regulator Spark plugs/coils Fuel pressure :43psi

First thing I said on part 1 when I saw tthe initial video and issue was check the grounds. If you cant find them, make new grounds. Looks ugly but has saved my ass.

NPR 👍🅰️🎓

Amazing diagnostic!!

Ivan I was following along and my research on my All Data came down to a Ground, being a possible Issue. I want to thank you for getting my 67 year old brain thinking. Your the best teacher I've had in 50 years. Thank you!

Loved this, but youre killing me with the cliffhanger, I want to hear what the Toyota tech recommended.

Haaaaa, the epitome of Data Driven Results, that was awesome Ivan, paint all fingernails black till thumb heals, so new subscribers don't think your weird lol

Wow!!! That was crazy! Awesome Diag! 👍👍

Mine is cylinders 3,4, and 6. 2006 subaru tribeca b9 3.0. I'm just starting. All I've done so far is scan it and drive it. It ran really rough and shut off. I'll pull the plugs and check the coil packs.

Not running 91 or higher octane in Benz causes bad carboned valves. I have a 05 ML350 200k I run nothing but 91 or higher octane fuel. Never had a problem.

🤠 awesome work!!!!

Hyundai Accent GDI 1.6L, does it require a relearn / calibration if you replace all 4 injectors if OEM from manufacturer?

CHARGE your time 1 or 2 may be 3 hours 😊😊😊😊

I commend your tenacity and perseverance in diagnosing this 6.5 Ivan. I know your motto is Never Give Up.