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42,632 Views • Apr 27, 2024 • Click to toggle off description
-Stall/stumble on Cold Start
-Clicking Fuel Pump Relay
-Flashing/flickering Check Engine Light and Low Fuel Light
-Transmission Solenoid Code
-Flashing Info Display
-Wonky Temperature Gauge
Can we nail down the root cause with ONE scope measurement, and maybe fix it No Parts Required?
Or is the WEIRD Toyota hiding more tricks up its sleeve?
IVAN'S PICO WAVEFORMS:
drive.google.com/drive/folders/13klP3GYr9Mwt7EsXu6…
Enjoy!
Ivan
Views : 42,632
Genre: Autos & Vehicles
Date of upload: Apr 27, 2024 ^^
Rating : 4.966 (34/3,940 LTDR)
RYD date created : 2024-05-08T17:22:08.72515Z
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YouTube Comments - 370 Comments
Top Comments of this video!! :3
This is why the general public needs to wake up and realize that this is why technicians have to charge diagnostic time. As far as Ivan putting his hands on the car and fixing the actual problem, that took a very short period of time. It's everything else beforehand that needs to be accounted for as well.
32 |
Specialty electrical shops that don't check grounds are not competent. Most of the electrical problems I have dealth with for 52 years have been neglected grounds.
41 |
There was this old ship stuck at harbor and nobody could fix the engine. They found the old master tech and hired him to come and take a look. He diagnosed and gave them a $25 K estimate. The ship owner agreed, and the old tech took his tiny hammer and tapped the engine and it sprang to life, The customer got his bill which read $5K for diagnostics $20K for knowing where to tap it at. You boggle the mind Ivan, you have mad skills my friend!
49 |
Reminds me of the story where a man brings his car to a shop to fix a problem. He returns later and the mechanic says "that will be $100". The car owner asks what the problem was and the mechanic says the he "needed to replace a bolt that had fallen out". The owner asks sarcastically "$ 100 for a bolt ?"
The mechanic replies, "No, $1.00 for the bolt and $99 for knowing where to put the bolt".
9 |
This is why whenever I buy an new/used car the first thing I do is locate every ground connection I can get access to. Remove the connections, clean the wires, posts etc. Lube it nicely with N-OX-ID and reinstall. It will save you a ton of headaches down the road!
21 |
Great diagnosis. If it were at the Yoda stealership that I worked at, it would have a new relay, ECM and temp sensor. And still not repaired…oh, and an alternator.
28 |
Anytime you have multiple electrical symptoms look at grounds first. A prior repair which solved the problem for a period of days involved a ground. What I see is automotive electrical systems getting more complex and mechanics/"technicians" get overwhelmed and miss the basics.
While I'm all for the diagnostician aspect of your work Ivan I think using this approach for a training example is just furthering that instant trigger that overwhelms mechanics. The basics don't involve a lab scope or a research thesis. A list of what items are affected, a look through the wiring diagrams, a recognition of the symptoms and you'll easily end up in the same place.
This car displayed symptoms very reminiscent of some of the first automotive electrical troubleshooting I ever did as a 14 or 15 year old, trailer lighting faults. Hit the brakes an everything except one marker goes out, brake lights only work with parking lights, or in conjunction with turn signals, symptoms changing with every turn and every pothole, etc. In 1990 these systems were the epitome of basic, there was no need to look any farther forward than the 4 flat. This is a lesson that most mechanics have learned but fail to apply in situations like this. Eric O did a video a year or so ago on a Chevy truck that was at a dealership with multiple inoperative modules and they ordered all of the modules then charged a restocking fee because the customer chose not to fire a $5,000 parts cannon, Eric O quickly found a corroded in half main ground strap.
Moral of the story is, just because the vehicle has a complex electrical system doesn't mean the problem has to have a complex diagnosis.
11 |
Ivan's mostly used tool the notepad aka Ivan's flowchart also much appreciated for not being behind a paywall 😎👍
14 |
Ivan, I thought 2023 videos were top notch but this year 2024 is of another level. Can't wait for Part 3 to find what the so-called 30 year technician thought. You are without a doubt amazing in your field. Dave in Guernsey, Channel Islands.
16 |
No dealership
No repair shop
No tech is ever going to go this in-depth for a car this old that’s why they just replace parts until the problem is solved because no dealership is going to let a tech get paid to sit in a room with a notebook trying to CSI this problem. Ivan is one in a million 7:36
18 |
Great find without touching anything on the car in your diagnostics. When you know proper diagnostic techniques, it's incredible what you can decipher.
On another note, when you stated the customer had it at another shop and they tightened a ground and it disappeared for a day, that was the first clue of where this would end.
Also, in my experience, a problem like this affecting multiple systems in crazy ways is typically going to be a ground issue. I had a customer complain that his windshield wipers would turn on if he engaged his running lights on his boat. There were a couple of other odd things that happened but as well.
After testing and checking, I found the main ground wire for the replay box was completely broken off. you might wonder how anything would function. The reason why it still did but all crazy was that the electrical current was dissipated by all the connected grounds at the electric panel, which confused the system and it would turn on random things like the wipers when you wanted the lights.
Grounds area very tricky thing but when strange things happen for no logical reason, you can bet there will be a faulty ground somewhere in the system.
23 |
Back in the 80's, had a Ford Aerostar that kept burning up the brushes in the blower motor. Electrically, it kept leading me to the ignition switch, which I wrote off as not possible as there were no other problems. After the third time I decided to pull the ignition switch and found the crimp loose, which was causing an intermittent resistive connection. Replaced defective switch and blower motor and it lived happily ever after until the recall notice came for defective ignition switches, which led to a court battle for complete reimbursement.
7 |
The very rare big difference is Ivan cares and gives the time (being self employed) to care about his customers and their vehicles, most just look for the $$££ and stealerships must have targets to hit forced on them from above...
3 |
It’s a awesome feeling when you positively see and find the problem
4 |
19:00 Every "scope capture" you take my man is the BEST
18 |
Incredible ! But yeah, bad grounds can be responsible for so many seemingly crazy issues. Data driven diagnosis for the WIN. Well done Ivan, fantastic job as always M8 !
18 |
Yep, PHAD is separated from typical wrench turners with the simple use of logic. I like your restraint from going directly to the suspected problem and proving the issue through measurements. Your dad has got to be proud of you!
5 |
Part three tomorrow? Some people would have spent five times what it should have cost to repair and then gave up and sold the car. Great job and content.
6 |
Next step would be to find the guy that forgot to tighten that ground bold. Maybe you can "capture" that guy on your scope too 😂 Excellent diagnosis as usual 👏👍 This approach takes patience not to rush to conclusions and it pays off! I learn a lot from you. Thank you.
7 |
@AtanasDimitrov954RR
1 week ago
Nothings better than coffee and pine hollow on a Saturday morning.
92 |