My guess is vacuum developed in the pipe after the air filter and caused the air filter seal to deform. Then, maybe it sucked up a pine needle or something not allowing the plate to close fully temporarily. My vote is to replace that air filter with OEM quality conventional.

I did a valve job on a truck with the same engine. Burnt exhaust valve. Just one. Today, replacing leaky brake booster 99 Camry 4 cyl. 225,000 on the clock. Customer complaint was “I have to plan my stops wisely.”

it was installed properly, the filter got so clogged that the gasket sucked in

You scare me starting those spark plugs with the dewalt, i've seen things go south quick using that method.I am not trying to tell you what to do, but it only takes one.

Nice tune up! I was waiting for a MAF cleaning thou

Oh, gosh... what do you think of this scenario; Filter got so clogged that the excessive vacuum dislocated that seal, a bunch of debris and dirt got sucked in and temporary got the throttle jammed open a bit, the driver floored it after a restart, dirt got dislogedged (chewed up and spit out by the engine) but the now freed up plate is working just fine. Lesson: if you depend on your vehicle, remove all aftermarket crap! Even the "premium" aftermarket part's still inferior to reputable OEM which often undergoes fail-safe testing (in contrary to ANY aftermarket dito). Hope this one gets the point and installs the OEM-solution and keeps with the serviceintervall which makes it dependable.

Toss that POS aftermarket filter and buy a standard paper filter.

WOW! That air filter was hammered!! I've seen some dirty ones but it looks more like some cabin air filters I've pulled out that people never knew they had. Yikes! I think I'd just stick to changing with an OEM style filter.

If I were the owner of that truck I'd be embarrassed at the condition of that air filter. Even though those are reusable, I'd throw that one away and get a new one.

I have been a automotive technician for 20 years and I have come to the conclusion that 99% of people put those K&N filters in their vehicles and think they never need to check or clean them again. They are a waste of money if you ask me, but I've made a lot of money replacing contaminated MAF sensors over the years because of them!

One of your followers have a good point on K&N air filter, if that is one, they need to be cleaned and oiled on a regular bases. Even if they say they last thousands of miles but you must read the "take care / maintenance" on them.. That a lot of people don't read.... lol

Amazing how readily people will believe any ridiculous claim made by some after-market manufacturer. Toss that crappy filter and put in an oem filter.

I put 260,000 miles on a 1991 Pathfinder with a K&N air filter before the frame broke. I cleaned the filter ever 15,000 miles. I never got a filter that dirty even when I drove to Alaska. That filter needs a cleaner kit. Takes about two hours if you have a fan to dry the filter. My filter never looked like that. The cleaner fluid needs to be applied and rinsed after 20 minutes. I would do the cleaner twice then dry and apply the oil(it's a spray). I bet his mileage goes up by 30%. With that dirty filter I bet the engine was running rich. Great video Ivan. Stay well.

I would never be brave enough to install a spark plug into an aluminum head with a power tool. I guess if you're very careful and perfectly straight it works but I'd be scared I'd cross thread it.

Project Farm did a comparison of "Which car air filter is best" K&N did a little better breathing on the track but, it lets too much dirt threw for daily driving.

Nice one Ivan. Interesting to watch your troubleshooting thought process evolve in time. Going to miss your Staten island Express videos. Good to see Keith move upward in his career. Not a fan of using power tools to install spark plugs. Be safe out there!!!!

Timing belts on these engines are pretty bulletproof, usually a frozen idler pulley or a shot water pump gets them. A broken timing belt is a problem if you’re 350 miles from home

O no!!!! Get ride of it while it still running. The dirt/dust will act like sand paper in the piston cylinders and are probably glazed now. Your customer will probably will see smoke coming out of the tail pipe as he/she have blow-by very soon. Or/ and end up burning a lot of oil... Lv your shows, keep up the great videos Ivin!!!!!

He just shortened the life of that motor by 200,000 miles injesting filth to the intake, I don’t care how good a car is, you still need to do maintenance.

YASSSSS! BONUS FOOTAGE! It's like going backstage after the gig.

Those k & n filters do not do a good job at filtering fine pariculates. He will have advanced engine wear from using it. Given his offroading, You should should advise him to urgently replace the k & n with a stock paper filter and change it routinely.

Ivan, 260k out of anything and I'm not complaining one bit. I personally like a regular OEM filter. I had a Kendra and Natalie type and I would just forget to clean it. I order paper ones from rock auto pretty cheap. I change them every other oil change. Great maintenance video. Thanls

Thank you for sharing your work, you help me understand the logic and diagnoses for both electrical/mechanical systems and follow through with their subsequent repairs.

I was just thinking, intermittent throttle issues? Start from the first thing in the chain, the air filter, then the hose-clamps, then the throttle-plate itself. If plate all carboned up, methylated spirits is a good cleaning agent. If still issues then go into full diag mode. Then you opened up the filter housing and all was revealed. Dusty roads etc what you expect! I check my airways (the cars) once a year and make sure that air filter is clean and seals. And I agree Toyota is quality.

...but did the owner clean or replace the Air Filter? Also, I believe the seal on the bottom of the filter got pulled out of position because of lack of AirFlow thru the dirty filter. This created a vacuum, and the engine needed air from somewhere. The seal was the first to move. It also may have started crushing some of the plastic conduit attached to the Throttle body as well. LACK OF MAINTENANCE! Not good.

Ivan, Great video - thank you. In this case I have to agree with those that feel that air filter should have been tossed - it was too far gone. And I also winced when I see you use that impact driver to not only remove but also install the spark plugs with those fine threads in an aluminum head. God bless Paul (in MA)

I have the same fantastic model. I would have cleaned the mass air flow sensor for sure and installed the correct duel ground Denso or NGK plugs as specified by Toyota. Toyota has even placed a sticker on the timing belt cover the importance of the special plugs.

My 2007 Toyota sienna has a 3.5 L V6 in it 169000 miles Seems to be a very strong engine only replaced the water pump , which I guess is a weak point on those The shaft looks like it’s a pretty small diameter, Great video Ivan, Always a learning experience With your videos

Nice find there! Good that the code lead you in a general direction - usually they don't! I've seen this happen on dirt bikes- filter gets neglected, and pieces of grit (doesn't take much) take up the clearance between the throttle butterfly or slide, and jams the thing wide open. A fun ride on a 2-stroke, LOL! Alot of the time they won't shut off by yanking the spark plug cap, either! Have to get brave and hold both brakes and slowly let the clutch out to kill it. 😂 Been a couple decades since I've seen that! Good to know about these Toyotas - I'll keep that in the back of my brain. General quality seemed to head downward after '96. That's probably one of the last good vehicles made of ANY brand. I had a K&N filter in my Silverado for the first 50k miles. That could be why it started burning oil at 50k! It's definitely a ring issue, since it only burns alot of oil if I push it too hard on hills while towing. If I keep the cruise control off, and don't let it scream at 4,500 on every hill, the oil consumption goes back down to a reasonable level.

Owner does a great job taking care of the truck. LOL

probably put some hosed air back through the air filter in an effort to remove more dirt. maybe used a can of seafoam cleaner, but great job Ivan. thx for the vid.

I have seen this system on a Mitsubishi spacewagon, it has the regular throttlecable but the app was mounted at the struttower. Realy funky.

I had one like this some years ago with the standard air filter in a 7.3 IDI. The customer thought it needed a new injection pump, but clearing the air filter solved the issue I have no problem with these filters, and special cleaner and oil is not necessary. Any standard window cleaner works fine, and regular 30wt can be used in place of K&N products. Dump it in a bucket with some windex, wash it out with a hose, dry the element, spray some oil on it and it's good to go. Oh, one off road recovery will more than pay for a timing belt replacement, so, do the math.

Owner: wants problem fixed so the truck is reliable as possible and won't break down in the middle of nowhere Also owner: still has original timing belt with over 260k miles

Interesting situation. Truck definitely needed some PHAD TLC! Nice job Ivan.

K&N air filter only works best to clean environment but there is dangers of using a K&N filter on your vehicle the K&N air filter does not protect you from fine particles and drit .getting into your engine if you noticed that you will have multiple failures + your mass airflow sensor will go out of control that would be the first thing you will have problems with! dirt and fine particles will get through the filter and destroy your turbo and your engine if you can see sunlight through your filter than your filter is garbage ? if you going on long trips with your vehicle like New York to Florida do not use a K&N air filter!!!!!!

K & N filters are ok for on road use. They suck for dirty off-road use. The filter oil holds on to dirt and debris that should fall off the filter and accumulate in the box. This eventually reduces efficiency over time since most people will not clean and oil the filter every time they go and get it dirty.

24:50 the brown deposit on the threads is combustion deposits when very fine leak develops between the plug gasket and it's seat around the threads (dirt lodged between the plug gasket and head)

Maybe I missed something, but I certainly would have replaced the air filter as part of the tune-up along with the plugs and fluids you were to perform. Maybe you did, idk. If not, you contact the customer with a revised estimate to include a stock replacement air filter. Additional part won't break the bank and well spent, especially in this particular case.

Great diagnosis as per usual, great vlog Ivan. Thanks for sharing and stay safe all.

I trashed my Kinder and Natalie air filter years ago. Project Farm did some air filter testing. The kinder and Natalie air filters pass to much dirt. I had to remove my intake manifold and actually pressure washed it. Never seen so much dirt get washed out. I now run OEm type filters only.

Ivan good video and we can always count on the bonus footage. I see the STATAN ISLAND EXPRESS traded one of its team members to North Carolina. You going to keep it going? Don’t forget to send an Email to Rocco to wish him a Happy Birthdays. Hope all is well.❤️ Artie

Thanks for sharing. These videos are very much appreciated

I have a 1999 Tacoma 3400. I placed a K&N air filter on it and had to clean the Mass air flow sensor on it because oil from the filter covered it and slowly pick up dirt and it gave an incorrect reading. I went back to a paper air cleaner and it has run fine ever since.

In addition to checking if the throttle plate closes , I check the throttle shaft bushings . Just like carburetors in the old days , those shaft bushings can wear out . It may not be often , but it will send you running for a problem . As well as a loose throttle body .

That air filter looks like one of my lawn mower air filters after not cleaning it for 5 years LOL but my engine always ran lean (for 15 years) so it ran worse when I cleaned it. After a rebuild of the carb it ran good with a clean filter. Google says: . . . use Super Clean to clean the K&N filter and 30W oil can be used. You can use compressed air before washing as long as you don't get to close to the filter with it. Use a garden hose but not to hard. This engine might have eaten a chunk of dirt or a pine needle that set the code but then swallowed the debris and just burned up.

those filters are designed to be cleaned and reused,they do sell kn filter cleaner and oil but just hot soapy water works,im sure you could substitute oil for the filter using mineral oil/veg oil or somthing that wont evaporate in time.those filters are high flow so oil is very important as thats what catches the micro particles if you ever do clean one

ivan said damn there's your problem lady lol

Great video Ivan. At 16:43 you noted that the cam belt may not have been replaced. As the customer does not want to get stranded out in the back blocks, even thought a broken belt will not cause major motor damage, it will cause the customer some stranded problems if it occurs in the field. Did you ask the customer if he the belt has been replaced and when? 260,000 miles and no belt change is asking for trouble. The cause of the deformation of the bottom of the seal on the air "cleaner" could have been caused by increased air pressure and intake vacuum differential with the filter blocked.

I have that same motor on my 02 Tacoma. That's one filthy air filter! Looks like it's never been changed.

Good work. I keep my reusable much cleaner. I have two filters. Swap clean one in every two years. Oil and cleaners are cheap. Engines are expensive!

every time i watch this guy i feel cold

Yota power!! Haha, those motors are bulletproof!!! Reliable and strong lil uns... lol. I can't unsee this clip when you dewalt it in the spark plug hole. Damn! Makes me cringe lol. You're lucky it didn't go batshit, lol. Nice video! When i got my blazer at 223k miles. Throttle body got so carboned up. Cleaned the hell out of it. It runs like champ. Now it's 240k with original motor and trans. Lol. So anyway. Great job cleaning up the throttle body! Many thumbs up

Ivan, don't those engines use the twin electrode spark plugs? My 99 Corolla did.

Take a picture of that air filter, show it to the customer and follow up with a swift dope slap. No words need to be said.

Watching this makes me miss my old Tacoma 😔 310,000 miles when the rust took her down. Excellent job by the way! I always enjoy your videos, I've learned so much from watching both you and Eric O.

Yep filthy, no wonder it was acting up. I'm supprised all that dust didn't ruin the butterfly assembly. The owner should bring it to you more often for other stuff that needs checking. Shame that people get something good and reliable, then ignore it untill it stops :-(

The owner probably only opens the hood just long enough to run wires to those goofy bumper lights. Maintenance?,... it has gas! Good Video Ivan. Thank You for sharing.

Thanks for the video I'm nervous to keep wiggling the throttle plate in my Nissan! Despite I want to clean it

Those hybrid throttle body were what the used just before drive by wire system My nieces Suzuki Verona has the same sistem. The computer ajust the plate angle via step motor to keep control of the idle and eliminate the need of IAC valve. In addition eliminates the need of external motor to do the cruise control.

Interesting to see a model with a throttle cable but motor and sensors, too. Belt and suspenders on the transition year. Wise troubleshooting, Ivan.

I agree with some of the other commenters. The aftermarket filter letting debris in probably jammed up the throttle plate. The owner probably hasn't done it much good and should go back to an OEM filter. I think it may cause other issues down the line. God i love rusty old Toyotas. 😎

Use denso K16tR11 dual ground standard plugs or NGKBKR5ekb-11 as suggested on the lil picture on the timing belt cover, they will last longer. Ditch the K&N it doesn’t fit the air box well, poorly made and just dirties up the entire system with oil and ruins MAF’s.

Thank you. Great Diagnostic Video. Thumbs up..

Again lack of maintenance. I clen those K&N filters in turpentine and blow them dry. New NGK sparkplugs have a special coating so just check the gap and mount them.

Probably vacuum from clogged filter made that gap inside down there...also maybe was good enough to measure MAP sensor before dismounting filter itself.

The APP sensor is mounted there because it saved them a bunch of time and money NOT tooling a new pedal assembly. Still very strange. I swear, if all manufacturers put dielectric grease on the inside of the COP boot, there would be a lot less COP/plug problems !

K&N filters and ones alike are meant for pavement Princess vehicles. If you look at project farms video comparing air filters, K&N was 100 times worse at filtering dust, versus a paper filter.

Everytime you were moving the throttle, i can hear that buzzing sound change. Did you notice that Ivan?

Nice maintenance....

I’m a big believer that a clean vehicle will have less problems than a dirty one.

I would say that filter was definitely due to be replaced....When have you ever had you customer tell you what or what not is needed.

I believe Hammerjockey is right also maybe before it sucked the gasket not being able to get enough air caused the problem. Getting a new frame? Boy Ford would have just bought it back.

I had a 1987 4x4 with a 22r. The last year of the carborated trucks. I would have bought another but like you said they are not that good of trucks any more. Much of that is due I think to quality control and Chinesium steel.

Its possible a piece of debris got passed that filter just in time to stop the plate from completely closing? After causing that code the computer disabled the throttle control system. That filter was definitely the worst I seen too🤔

U are genius bro thanks for all help

Being a Toyota Master Technician. Always use factory parts. This engine uses Twin Ground spark plugs. See label on Timing cover.

Had similar problem with my 2000 tundra 4.7 going into limp mode over throttle body issue. Only on very cold days, if I were to do a quick throttle response after first starting to drive it cold, it would throw a engine light and kick into limp mode. It is a heated throttle body, and when it's real cold out that motor that moves the throttle plate can lag compaired to what the ecm reads the throttle position to be at. So on very cold days I make sure I fully heat my truck up before driving. Knock on wood it's been 6 years trouble free since it's happened.

Ivan, you are one of my all-time favorites ... could you please replace the poster on your garage wall with something less objectionable? Thanks.

I'll never understand the thinking that oem level air filters are somehow lacking. New frame - wow.

Great video! Original timing components LOL.

Ask indicated by others K&N filters are a marketing hype (to the tune of $40). More than one KZfaqr has tested them and the results are in. The K&N filters will let in a little more air (CFM). Along with more dirt and "filter oil". The results are measurable. You be the judge. At best with a modern engine you might get a pony or two for a few months. You then spend the "rest of your days" tracking down oil coated MAF sensors, extra wear in the engine, .... The Project Farm youtube channel had a good review of air filters.

I would change those coils too and use those as spares...

some mid year line change likely, so that one still had a cable. use up all the ready and stocked parts.

Wrong spark plugs for that engine. You need the dual grounded plugs. Even has a sticker saying that on the timing cover

I can hear the engineers now...."Hey, let's make it look old school, but give it ETC and have them scratching their heads!"

I can’t be bothered to clean oil a kn filter I just install a paper 🧻 filter every 4 oil changes. That plug was pretty worn and engine was running smooth it must be a Toyota 👍

Why didn’t you scope it great video

I swear nobody ever cleans those things.Should have pulled the mass air wich im sure was nasty.

Ivan check the pressurein the dpf if its a 28 diesel

I noticed the threads on wore out spark which are part of ground electrode was pretty rusty dirty , bad ground eh!?

I'm surprised you were not hearing the intake valve screaming???? Specially it started to sing while you were moving it? I'm sure it on it way out as well..... Ugggg

That particular engine type was vulnerable to oil sludge build up on the heads due to a tendency to run hot. Frequent oil changes using the right type of oil is critical. The sludge runs down the engine block into the oil pan plugging the oil pickup and causing the engine to throw a rod due to oil starvation. It's a well known well documented issue.

"Bullet proof truck"? Hey Ivan truly enjoy the channel. My question is, 4 or 6 cylinder? Or does it matter? Thanks.

These aftermarket filters do let through more particulates (especially if as poorly maintained as in this truck), so I wouldn't really recommend them for off-road use. Let's continue watching and see what horrors reveal themselves as you dig deeper. Edit: and the idle jumps high as the engine breathes easier... to be expected. That should sort itself out.

Oh Ivan. Tell me I didn't see you start a spark plug with an electric wrench.

Yep. Got an 03 and bastard did same shit.. randomly the throttle has no response.. replaced tps. Still broke. Tested all wiring and back to the ecu. No signal at ecu.. replaced ecu…. Fixed the issue.. pos.. for a month i just unplugged the tps and accel pos sensor along with the motor in the tb and rigged it up to use the cable only.. was the only time in that motors life where it actually went to 100% throttle.. lol. Otherwise it cuts at 70%..

I got a 2.7 automatic 2001 i got a loss of power , hardly goes past 2k rpm , i checked aur filthers, and cleaned them, and the Trothle and cleaned it, i changed the coils the 2nd and 3trd keep getting dirty, idk what problem could be

Water contaminated fuel got in so we cleand the tank etc n fuel to the motor but no start - we disconnected the battery hoping for a reset n now no crank n all the warning lights on ......any idea wtf happened....n a fix..?? Thnx

Are you have to do is put it in a small flat pail pan dish washing soap for a little while and let it soak and then rinse it with hot water do that several times and then let it dry out.