Відео

ive only gotten into parts changing in the last year and ive been feeling pretty stupid for changing my fuel pump chasing a P0300, P0301,2,4 under WOT. im speechless like the last guy

During the ignition waveform analysis I used to see on the old caprice opti spark when the burn line sloped down it was the spark plug.

Just had this problem occur yesterday. Thanks for the video!!

On the white board you didn't show the test light connected to ground!

Matt what if the vehicle don’t have a spark plug wire for example like the notorious 2002 expedition you worked on. How would I use the probe ?

“Ass Hat” cool term for the never ending source of arm chair quarterbacks. Will listen to this video after writing my comment. After I Subscribe!

Dan is the man....maaaan!

Don’t let the comments get you down. Ignore the idiots.

-12% Negative LTFT ?

Dude.

Excellent video and another example of how important it is to go back to first principles on such difficult to find faults. I'm in the UK and wanted to say 'thanks' for a great video session.

The parts slot machine lmfao ..😄

Sir, my caddy STS SIVELLE 99 K3 stars for a second then turns off، what's going on? somebody helps me finding the cure.

This man here def has a spot in heaven. Thank GOD for you my guy.❤

My MAF and MAP are the same part on my 09 LR RRS . I could never find the MAP and I think someone told me it was inside the MAF. I assume you read it the same way tho?

what did this cost in labor ? $ 100.00 hr.........

Love it. The sarcasm was great. Guys that give you idiot comments need to make their own videos. Keep up the great work 👍

You can access from the top by removing the intake manifold. Also it's probably a broken wire to the sensor. You can bypass the plug with a jumper wire.

Like watching a murder mystery unfold. Thanks!

I had high hopes for this. I was deeply saddened to find out that it can't even reset the oil change light on my 3rd gen prius. It tells you instructions on how to reset the light, which doesn't require the scan tool. They are instructions available for free in many different places. On that front it falls totally flat.

Mate!! I love your vids!!!! Been watching heaps Cheers! 🇦🇺 🍻

This has happened to my wife's vehicle and to at least 10 of our company vehicles Everyone of them has been because people topped off the fuel tank when they were filling it up.

Wow... Common theme with his videos seems to be everyone is a hack, except for himself. Couple quick points, the intake R/R is 2hrs labor. Which is generous. So the $700 figure thrown out there is way off. Also, what happened to the For Sure vacuum leak? A misfire caused by a vacuum leak will only be at idle. So driving the car would be and is always a 1st step. Fuel trim readings can be very misleading with a misfire. Next point, the PCM/ECM is not inside the car. It's in the cowl, AND they fail very often. So your time saving techniques are nice, but what if the PCM is sitting in a pool of water? Or what if it would be in water because the drains are clogged??? If the PCM is bad, the proper fix is ALL the coils ALL the spark plugs and a PCM, and they need to be Motorcraft OE parts. I'm not a flat rate tech, but I was, and I can tell you its the system more then the techs. You simply can't spend the time required to properly diag a car. You have zero pressure on you, no customer in the waiting room, no advisor asking you how much more time, or whats wrong with the car. You don't have 8 other cars that need to be looked at. Perhaps you should just do your diags for your customers and your You Tube fans, I think thats great, and you likely help educate some folks out there. But stop throwing the rest of us under the bus. We are not all hacks or dishonest, in fact I think the overall majority of techs want to do things properly. We are all very impressed with your knowledge, if thats what you need to hear.

Vortex sensor does it work the same way as flaps in inlet manifolds creating swirl?

Okay brother.. i see the UA-cam plaqué on the wall. And yes!! Green eye lady was that shit bruh!! 70s and 80s music for me...

Once again, another effin awesome video from the man who gets straight to the heart of the matter and explains how things work like a master. Brilliant Matt 👍

As usual, great video. We need a video for Evaluation of a working mechanism of spark plugs.

Great explanation. I had the engine management light on intermittantly, car ran great. Plugged in scan tool long term fuel trim was around 8% short term 16%. I tried this a few times watching the live data when someone else was driving. STFT fell to 0% LTFT has not moved yet but I know it takes longer too respond. If I had a small vacuum leak I would have expected the LTFT to fall. I will keep an eye on it. Had code PO1071 for a while but found another code PO170. I erased the codes, engine management light out and so far staying out. Keeping watching your videos, great educational value thank you Matt. I am a great believer in proper diagnosis, your videos give me a much better understanding of what is happening. Incidently I read if the P170 code returns the fault is most likely the car's electronic control module. We shall see.

I love ur vids man they always pop up after I watch a vid for my tdi and I end up watching for a while, I've been wondering what is the can bus system in a dummies down explanation lol when I look up what it is it's kinda confusing

Just got a topdon great value

American car are such crap! You can add Airplanes to the list too. They refuse to add talent to their team... My car spends more time in the shop than the road. while my Mazda with 2x the km never gives me any issues. Stop using tax money to bail them out, the never learn!

Finally learned something especially not to rely on the multitester reading of the coil because it's different under load. This applies to other electronic stuffs. Also teaching me to think through first. Awesome troubleshooting sir.

Nice video. Thanks for sharing your experience and knowledge. Gracias por compartir con nosotros 😊

On my 97 tacoma, I had a crack in the head. I was only using about a pint of coolant every six months so it didn't produce much tail pipe smoke. It heated and sealed quickly. For three years I thought it was a small system leak.

❤❤❤❤❤❤❤❤

I don’t trust anyone with clean hands

I respecfully disagree with installing a used engine. If I am paying 15-25 hours of labor to remove and replace an engine, it has to remanufactured.

Two prior crank censors, a cam censor, and you still diagnose it in what I would still call a few minutes. You are Brilliant my friend. I learn something every time I watch your videos.

Have you watched the crazy engine mods vids on D4A?

ok so whatever it is (a component) it makes sense to replace all of them if they are the same age. Oooorrrrr you can have them go off one at a time. I get your point though from an upsell perspective.

Hi Matt, FYI to fully understand your teaching one needs to experience the issue on a vehicle watch the video repair the vehicle then rewatch the video a few more times. You do an awesome job of explaining the system.

Hey 👋

Excellent video. Did you have a relative compression test mode in the scan tool? Did scan data have ignition burn time per cylinder? Ohm meter test, if it shows good it does not mean anything, if it shows bad it is bad. Have you tried to make a trigger circuit with a TTL 555 to bench test coils? Thank you in advance for your answers. .

I have also found the ohms test wrong on several bad coils on different makes. Would you not address the vacuum leak too?

What many people stumble on, and it didn't make sense to me until someone explained exactly how the multimeter works..... when you connect in series, AKA just the negative side, to read a voltage, what you are doing is supplying another path for the electrons to go through (through the multimeter). Basically electricity chooses the path of least resistance. If it is going though your multimeter then the normal path has resistance, and this is what is measured.

Hello Matt ! Happy Sunday evening to ya’ ! 📈🔥💡 I want to ask you if you can help me understand where initially the symptoms and especially with fuel trims pointed to a vacuum leak and in reality (ultimately) those were caused by this failed ignition coil . If you don’t mind .

Another great video. Although your method of actually diagnosing problems is more time consuming than simply firing the parts cannon. I'm sure it is greatly appreciated by your customers.

Common voltage feed to injectors AND coils but don't they trigger at different times... i.e. bank 1 injector is followed by bank 1 coil? Intake/compress/ignite/expell... So scoping that common while triggering on front #4 injector would I.D. the cylinder sequencing?

Anymore.... diagnostic fee is appropriate.... 21st century requires 😢 diagnosis! And it ain't free!

Very good. What I am trying to figure out is how to identify a crank sensor problem in a Holley Terminator X. The car has an intermitent stall or bog at WOT only. Off the line of while cruising.