You're a good man, the amount of people out there that couldn't give two hoots, even though they have been taken care of themselves by others, Good to see someone being paid back in kind.

so glad I discovered your channel. You rock, not just because you're a thorough mechanic, and a renaissance man, but because you're an awesome human being. In our "dog eat dog," "get mine" culture, you model true success. Keep doing what you do, I'm spreading the word!!! Sincerely, new fan :)

Way to go helping Dory out! You rock man.

I almost spit my coffee out watching this video 🤣🤣🤣 Absolutely hilarious. Luv it .

Thank you so much for this. Ive searched far and wide for this exact problem on an 03 aviator and couldn't find anything on any forums, Google, or on KZfaq. This is exactly what the problem is. I didn't even know what to search and I came across your video on accident somehow. Thank you so much again.

great video. Subscribed. Loved the carpet/box/scissors hint. chuckled. Anyway, can't wait to watch more videos. Thanks for your potential future help.

I like your analytical approach. Very nice video

As soon as you said munching carpet , scissoring , etc . . I almost died!!!😭😭😂😂😂😂😂😂

Awesome, Awesome boss! You made me crack up and everyone in my house wondered why! Love your sense of humor! By the way, keep up the great work you do for folks!

Great video; definitely gotta find the original problem. Perfect example: I bought a 2000 4runner a few months ago. I noticed that the brakes had a slight vibration, but nothing too bad so I didn't really worry about it. After a few weeks it was noticeably worse and when I came back from the mountains it was TERRIBLE heading downhill. I figured the rotors needed to be turned but they were so old I just bought new ones. This somewhat fixed the problem but the vibration was still there (just not as bad). I wondered if the pads wore weirdly in the one month I used them in conjunction with the bad rotors (pads were new when i bought the car). Sure enough when I checked them out, the pads on the driver/front were noticeably more worn at the top than at the bottom. I replaced the pads and the vibration was gone...for a couple days lol. After a few days it was bad again and when I re-checked the brake pads,the pads on the driver/front were cracked! At this point I figured it had to be the caliper. I rebuilt the caliper (and swapped out the pads) and WOW what a difference. Not only was the vibration gone but the braking was awesome. The 4runner caliper actually has 4 pistons (two on each side); I assume only 1, maybe 2, pistons were working when I bought the car which was causing weak braking, weird wear, and excessive heat/pressure. Once all 4 were working the vehicle had world-class braking. I rebuilt the other side because I could tell it wasn't operating at 100% and sure enough once all 4 pistons were moving freely the braking was superb and like-new. So, yeah, you may be tempted to point at the obvious problem (like old rotors, or worn pads) and say THAT is the problem. But you will just keep having problems until you find the axiomatic problem.

Someone give this man a show had my heart poundin at moments lol

Matt you the man! Always looking to help someone out, not to mention returning a well deserved favor. If there was more people like you, the world be a much, much better place. Wow, 15,000 subs, God Bless!

You're a good dude. I appreciate you making the video and even more so I appreciate you for taking care of the little people.

Awesome video. You are like the Steve Irwin of drive train repair! Your enthusiasm and knowledge are excellent! Thank you for sharing your knowledge with us shade tree mechanics. My problem is a drive shaft CV joint or propeller joint issue. I was just getting a little more information before heading out to the parts store tomorrow. Subscribed and liked!

Man if half the human beings on earth had a heart like yours our world would be a paradise.

Way to go... 'Diagnostic scientific mind set' and 'down stream and up stream'. I like that.👍

Always nice to have good friends. Props to you sir!

Oh man.. Just keep doing what you doing you're unbelievable 👍

what a top bloke you are good man

man, you are the best at what you do

Thanks, and God bless you!

Thank you for being the type to give back. I'm sure it means more to Dory (sp?) than you know.

Very good diagnostics you made and being honest to your customer. No mechanics around here in Cassville, MO. don't use the theory's that you use and should be done, period. They just polished the teard so to speak to make it an easier fix. But in theory, it wasn't fixed at all. Good job Mr. Schrodinger.

Been watching your Videos for awhile, including your Christmas Vid awhile back ago. Love your your Vids...very technical in your explanation. Thanks for this!

From 15,000 to 1.6 MILLION ! Congrats!

Thanks for posting 👍, I have a similar scenario with my 2000 Ford Explorer but, alot worse sounds, I totally get wat you mean by "quick diagnosis", ex: a miss doesn't always mean it's the coil pack. 👍

You’re awesome! I wish someone in Colorados was like you I’m in the same situation single dad Covid took my job and now I can’t get her to the dr times are tough I’m trying to learn on here and hopefully fix it myself but I love seeing people like you do things for others makes me dream

I wish more people would park the vehicle rather than continue to drive till it breaks. I do most diagnostic tests for free or very cheap. I've got 25 years experience and I would rather lose a few dollars in the diagnostic then replace a destroyed part that could have been repaired And even with two many years as a A.S.E certified tech. Sometimes I have a problem that i get stuck on and need advice or i just watch to see what other people are doing. Great video and problem diagnosis. You picked up another subscriber.

This guy has such a great point.... Find the issue and the cause of the issue... MAF sensor went bad, I just bought a new one ($100) and put it on. The new one also short circuited. Finally, I looked for the cause... and found it. Exposed wiring got wet from the rain and shorted the MAF. I insulated the wiring, then I put another MAF sensor on... no issue ever since.

You did a good thing for your friend. May you be repaid many times over.

At first i thought you talked too much, but later i found it informative

Thanks for all the great tips! And education

Scissoring munching on box going on in there, got it!

You are a good man! Subscribed!

There is simply no other car guy on KZfaq who has this man's scientific mindset. His videos are always such a joy to watch.

Really detailed video really really really detailed

Very good job and advices,thanks.

Championship material right there Matt. We need a few more humans like you in the world, I see so many users and takers in my business it just breaks my heart. Your friend is very fortunate and its good to see some positive karma make its rounds. Stay gold.

congratulations on your success in your KZfaq channel. You are a genius and help me and 50,000 other subscribers. I love my 2011 Ford Edge Sport AWD. with your channel I appreciate my car even more. More power to your channel. and Thank You for the knowledge

I'm not a Ford guy, either. GM and Subaru. Just bought a Toyota off my buddy, which is making a clunking noise, hence why I found my way to this video. Trans Am is still sitting in the driveway, now with a dead battery.

love your presentation wish I knew you in real life.

Just watched your video. Very informative. Thank you. Oh and your clues as to why there is absolutely no possibility that you have ulterior motives re. Dori were very clever...."munching carpet, eating box and scissoring" hahaha! Very funny!

When I worked at a Pontiac dealer in 1966 there was a drive line issue. Some cars had a drive line clunk and the factory found the problem and had the cure. It was too much clearance between rear end pinion and U joint flange. The cure was to put red lead on the splines to take up the slack. It worked. I'm sure there is something better today to use.

Bloody good man. Cheers mate

Thanks for your video. You went pretty deep there. I think that's where my jeep is heading. I just wasn't sure what to look for. You helped me narrow it down. 👍 👍

Nicely done. Love the innuendo.

Hey, I've watched a couple of your videos before, but this put me over the edge with the comment retorts. I lol'd and subscribed. Thanks for sharing your auto knowledge.

Absolutely great

I haven't had an unexpected laugh like that in some time. Message received. Maybe if Carrot top needs an understudy you got another career choice lol. Great diagnostic work as usual. Love your work and your methods presented. You're a credit to KZfaq

How aren't you more popular. You're the revolution of the 2%er's my friend. Congrats on your successes and the ability to explain these complications to us viewers in an understandable fashion . You're awesome man! Been watching your videos like its television! You look healthier from a couple years back keep up the health, knowledge and positivity. Peace out homie!

Not Cv... Bearings On Wheel Side / Bearings Gear-Box Side / Universal Joints- Front-Rear Drive Shafts... Diff Mounting..???.... Broken Tooth in the Transfer Case...?>>> On The Money Mate Front Diff... I Love You Mate... I Help People All the Time... I Love Your Mind...!!!... Keep Up the Good Work...!!!... Your a Ledged...!!!... Huge Love & Respect from Australia... Regards; Dario...

You know I really like your channel! But more importantly I really like your videos.

Thank-you for your awsome video, from Yukon, Canada

Finally someone who knows what they are doing we more people like in every business 😉

good video man thanks gave me a better idea of whats going on in my car

THANKS FROM RUSSIA ! YOU ARE GOOD GUY !!!

Ha! I didn't have a clue what you were on about when you started talking about the carpets, 1st I thought you meant there had been rats in the car then when you said about the box and the scissors I thought she kids who had cut the cardboard to shreds, lol! confused! :-S Hey well it's good of you to help her out like that, even if you did say at 16:50 that you're really not worried about destroying her worn out front box while banging your cold hard chisel into it, and showing the ring gear, teeth marks and talking about the carpet when we can clearly see that there is no bush there anymore!.. hey great video, I hope they take you for the 1st ride just to make sure no more holes get blown out, fluid spills or biting teeth dude..

Man I wished most mechanic are half as good as you!

Im In Littleton! Good to see!

Good job.. great video

That is good info, thanks Matt. My mystery noise is a clunking that seems to be (seems to be) in the middle at the front. It is more of a light clunking as the expy moves forward from stop to very slow speeds. It seems like it might be a broken tooth in the differential. When 4x4 is engaged it develops an ugly shake around 40 kph (25 mph). The vibration/shake stops when I disengage the 4x4 on the fly. Two thumbs up. One for helping out others (I try to do that too), and one for the great diagnostics. Although I am sick and sore of getting under vehicles (64 yoa), your style and enthusiasm makes me want to get at it. Thanks.

well done very helplful

Great video man. Yeah you use the die on the ring gear to set it. I watched my brother do it on his car and on his drive for his inboard out board ringing on his old speed boat. He's a machinist and knows about lash and so on. The rear is hands down as hard as a bottom end. That's the worst blown rear I've seen. it blew out the front not the cover were the cast is thicker. That's took alot of force.

Your videos are extremely helpful. Thank you. I know this is 2 years old but I want you to know that I appreciate the help!

Wow, had no idea about the precise tolerances in that carrier! I too thought it just fits right in snug!........uh oh

Ha. Some folks just can't help but preferring munching on the carpet. I can relate. Good on you for helping out. 🙂

That was awesome !

Why not rebuild it!? How bout the fact it has a hole in the case lol Good video Matt. Quit calling us mechanics mindless monkeys! Also no decoding on the rear tag on a Ford. It says right on it 3.55 ratio and it was an 8.8" :)

Hi from COSTA RICA. I saw your video and it was pretty well made. Also helped a lot cause i'm having that issue with a Hyundai Santa Fe 2007 2.7cc AWD. The Clunking noise shows up on 90 degree turns at less than 40 Miles and hour. The noise drive me insane. Hopefully i get to fix this issue based on this video. Thanks a lot

I came looking for a completely different clunk my truck was making. But stayed because this was really interesting.

First of all, Thank you for your efforts with these videos. I truly appreciate your application of the scientific method, its certainly refreshing and informative compared to other diagnostic resources available. I found your channel when looking for videos relating to Jetta Mk4 2.0 timing belt changes. I am just breaking into DIY car diagnosis and repair so I'm not going to make the mistake of attempting most of the things you are doing in your videos. None the less, I have watched several of your videos in a row, partly because they are so educational but mostly because I love to "hate" you, or is it that I hate that I "love" you? I just can't tell. One moment I want to be your best friend and the next I want to punch you in your smug face! Anyway, I hope you continue to find the time to provide this unique KZfaq experience, hopefully curing cancer and diabetes won't interfere too much! Oh, and never forget when you're a genius!! Also, please continue the terrible puns.

You sound like a physician also, are you. I'm a RN and I work with Drs who love to do auto work, and their good at it too. Etiology!!! and you explained it too

love your videos

LMFAO The Subliminals!!!

Reminds me of when I put 4.10 ring and pinion in my 07 mustang. Ford has very tight tolerances luckily on their pinions and I had bought a FRPP ring and pinion and I was able to just take the original pinion shim and transfer it. The pain in the ass was adjusting the backlash.

my 02 mercury Mountaineer doing same thing. with mine it's the rear. i jacked up suv put it in neutral turned tire in back. found hard spot. my brother was able to hold driveshaft still and i was able to turn the tire. no hole in mine. now i need 2 find a used 3.55 rear

I had a similar problem with mine and a mobile mechanic ended up just removing the loose metal through the hole and welding up the hole. I can say I was overcharged and It did not last long before I needed a tow again. He charged me 2500 for the crappy work!!!

I do the same thing for people all the time... There is not enough love and good people in the world now day's. If everyone would pull together on this principle the world would be a lot lot better place to live....

Hi, Don't listen or rush to do expensive transfer case maintenance without trying an easier fix if this applies to you. My slipping and clunking wasn't turning related - just while driving in 4 wheel drive. My Ford Ranger is a relatively new v6 with low miles so I thought this shouldn't be happening. The problem was an easy fix but figuring it out wasn't as easy. My key question for you is: Are u driving with four IDENTICAL TIRES? I was driving with 2 different pairs but they were the same size. I thought this was OK. However, the front transaxle noise only started when I chged tires. My tranny guy informed me that the height of the tire is VERY IMPORTANT and Ranger's 4x4 system is not really designed to be used on normal highway conditions (this is where the clunking began). Furthermore, different manufacturer's will produce tires with different circumferences, even if the sizes are the same. I measured my two pairs and sure enuf, one pair was a HALF INCH higher than the other one. Multipy this difference exponentially at higher speeds and the front end will slip and or clunk. I went out and bought 4 new IDENTICAL tires and lo and behold - PROBLEM SOLVED! Good luck, Mike, NS Canada

It takes a lot to make me laugh. It really does. And the carpet munching reference had me dying. Your videos are great. Helped me diagnose bad pinion bearings when I watched your video about tightening the pinion nut on your TA. Keep up the great work!

I was hoping that you could use your whiteboard and give a quick rundown on the theory of 4 wheel drive.Great video as usual and good camera work.

About 10 years ago a co-worker had a early 2000's Grand Cherokee and his rear differential went due to NO lubrication. Turned out that his axle seals were leaking, i told him whom ever was doing his oil changes should have been checking the fluid level at each oil change, that overlooking cost him about $1500.00 to rebuild due to someone's laziness

Broken Teeth ... I Have Same Symptoms with mY Car... Will Investigate... Thankyou...

And it was well worth the watch for the carpet and sissor info! Bonus fun facts no matter what year video I watch of yours! It's always PRESENT in the moment! Lmfao

very great videos

You're comment about the carpet, box and scissors made me laugh.

OMG, carpet munching, ate out box and scissoring....who knew Campbell's Chunky "Clam" Chowder could be expelled out of a person's nose? I'm dying her Matt. That was fucking hilarious my man!

Loved it...

the tag on the diff is actually a machining tag. if this were to be a serviceable diff, you would use the numbers on the tag to get the correctly machined parts to rebuild the diff. the escape triplets escape/tribune/mountaineer do not have serviceable rear diff. even the stealership will only swap the complete unit.

Think the terms you were missing after cracking open the rear diff are pre-load and backlash. I don't have a RWD vehicle though but you know me always learning stuff I'll never use, like OBD-II diagnostics. haha

LMAO @ the carpet and scissors

+1 for filming under a vehicle and having it look pretty decent (i know the pain of being able to see something clearly with your eyes, but near impossible to get it in a pic/video)

Happy St Patrick's day.

thanks for the life story....

I found an old gem here 😌

Best professor

We get it, you’re helping Dory!

Thank God your diagnostic approach led you to the munched carpet and scissors... That could've been dangerous for l dory😂

We didn’t need the 4 minute life story of the owner of the vehicle. Buahahahaha 14 minutes in… she’s 80 plus someone’s been munching on Dory’s carpet and eating her box apparently Hahahahaha Good for Dory @ her age!

That swoop in for the intro tho hahaha