3.4L Toyota HIGH IDLE FIX! (5VZ-FE Tacoma, 4Runner, T100)

Автокөліктер мен көлік құралдары

Today we fix the very high idle in our 1996 Toyota 4Runner. One these it is very common to find a clogged up and dirty IAC Idle Air Control Valve on the throttle body of the 3.4 5VZ-FE. Problem occurs in all Tacoma, 4Runners, T100s, and Tundras with the 3.4L engine, and process to repair is essentially the same.
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Пікірлер: 89

  • @davidcorralesfonseca5826
    @davidcorralesfonseca582611 ай бұрын

    Fantastic, thank you very much for your time and kindness to explained how to fix this. I do appreciate it. Cheers from Costa Rica, ALberto

  • @tinytattoomike7943
    @tinytattoomike7943 Жыл бұрын

    Excellent video man I’m about to tackle this on my T100 It wasn’t the slop in the throttle shaft because mine has none so this is the video I needed 👏

  • @wahiawabound808
    @wahiawabound8086 ай бұрын

    I did that with my 96 tacoma and your right the screws for the idle air control was a pain and 2 out of 4 got stripped I even had to extract one of them so as I finally got them all out I took the screws to ace hardware match it with some Allan screws and it worked out perfectly fine the next time it won't be hard at all.

  • @megh9806
    @megh9806 Жыл бұрын

    Those screws are JIS, not Phillips, and that’s why they are dangerously prone to rounding out. Use a hammer on a Phillips screw driver or an impact driver (one that you actually whack with a hammer as you turn)

  • @matthewtrotter4035

    @matthewtrotter4035

    Жыл бұрын

    My buddy showed me the hammer trick years ago. Messing with old dirt bikes it was a life saver.

  • @98erics

    @98erics

    Жыл бұрын

    I bought a JIS screwdriver a few months ago and it really is amazing how much easier it makes those little screws. They're still tight af but it does help.

  • @912ruckus2
    @912ruckus2 Жыл бұрын

    great video, gotta do mine this week

  • @manfredolson6889
    @manfredolson68897 ай бұрын

    And what do you do if that doesn’t work?? I replaced mine and idle is still high…

  • @jsvallee567
    @jsvallee5678 ай бұрын

    just did that same job on my 01 tacoma and 3 out of the 4 crew striped doing it so i replace them with 8MM bolt problem solve for the next clean up !

  • @evanburgeson
    @evanburgeson Жыл бұрын

    Just finished replacing my timing belt, water pump, accessory belts, power steering pump and lines and some other odds and ends on my 97 runner and when I fired it up i was idling at like 1800RPM. After triple checking my timing marks were all still aligned (they are) I found this video and after blasting a bunch of gunk out of my throttle body and idle air controller now it purrs along at 800RPM again. Thanks for the video this saved me some serious headache! -Cheers

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    Glad I could help!

  • @2028end

    @2028end

    3 ай бұрын

    @@DirtGarage Unfortunately, after cleaning my throttle body and IAC valve is when i got the hight idle 2000 rpm. Been driving 98 4 runner for a week now and nothing is changing. Tried disconnecting the battery, but nothing changed. Can I pull the ECM fuse? ECU fuse or something to reset the IAC?

  • @jmandonutsm4847
    @jmandonutsm484711 ай бұрын

    Really great video thanks

  • @samran4654
    @samran4654 Жыл бұрын

    Love you Bro...Best of luck.

  • @cristobalvillalpando7451
    @cristobalvillalpando7451 Жыл бұрын

    Great video great help thank you

  • @TheCarlosCordova
    @TheCarlosCordova Жыл бұрын

    My problem is that it starts high and eventually goes down after the engine is at operating temp. This can take 5 minutes and yes I did remove the IAC and cleaned it

  • @m0rdecai_047

    @m0rdecai_047

    Жыл бұрын

    I had the same issue, cleaned the throttle body and throttle valve plate itself with throttle plate cleaner and a shop towel. It fixed the issue and now only takes a minute to go down to idle rpm.

  • @julioserna5659
    @julioserna565911 ай бұрын

    Hi, and thanks from.the caribbean, could it also fix when the rpm is like stall and doesn't go past 2000 rpm, thanks again !

  • @Deveak
    @Deveak11 ай бұрын

    Could you put one in a sonic cleaner or does it have fine gaskets that could be damaged?

  • @k-art-L
    @k-art-L Жыл бұрын

    What about motor rattling, is anything related with the ICV? Or any posible misfiring? It just started Last night not sure if for the cold weather, but it happen while driving started to rattle and shaking if you reach the 45mph is when you can feel it

  • @meangreen3038
    @meangreen30386 ай бұрын

    Let me just say bud the way you opened was great also great vid all around👍

  • @DirtGarage

    @DirtGarage

    6 ай бұрын

    Glad you enjoyed

  • @varmint223
    @varmint223 Жыл бұрын

    After replacing the IAC mine idles at 1100

  • @alexandermorrison2299
    @alexandermorrison22996 ай бұрын

    Very well done...

  • @jameshall4385
    @jameshall4385 Жыл бұрын

    You should get yourself an ultrasonic cleaner. You can pick them up cheap at harbor freight or in Canada princess auto. Or off slamazon dirt cheap

  • @jemallybrookes
    @jemallybrookes7 ай бұрын

    My 2001 Toyota Tacoma, is idling high in park and neutral. And when driving and take my foot off of the gas the speedometer needle going up.

  • @Phillmo8
    @Phillmo810 ай бұрын

    Still didn’t fix the problem anyone else have an idea besides throttle position sensor or clutch spring I can’t figure it out

  • @frankmabuku2076
    @frankmabuku2076Ай бұрын

    Thanks very much. My vehicle 🚜 was in a mess and got 800 also 🎉😊😊😊😊😊 from Zambia . Enjoy my surf. Low consumption.

  • @nulcable
    @nulcable Жыл бұрын

    Another thing fixed! Next week the 4wd issue? Curious what's wrong with that. Keep up the great work!

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    It was the ADD system, I completely defeated the ADD now. So pretty much fulltime hubs locked in front end. Gonna add slight drag to driveline and slightly decrease fuel economy I'm sure. But totally worth it for reliable 4x4 system. Simper the better in my books.

  • @JoseLuiz-nz2nz
    @JoseLuiz-nz2nz Жыл бұрын

    What about low ldle issues, should l do the same thing,by away l love this video demonstration 2 thumbs up

  • @stellamatutina3573

    @stellamatutina3573

    3 ай бұрын

    Hi, did it turn out to be the IAC..?

  • @nemesis851_
    @nemesis851_ Жыл бұрын

    Surprisingly most (not hand tool) people don’t understand the force pressed down should be equal or more than the turning force. Otherwise strippage GG on not stripping those small screws 🤙

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    I came super close to stripping these probably 5 years back when my truck had a 3.4 in it. That's why I ended up putting the throttle body on the ground to get my body weight on the screw driver when turning. Not gonna play those games!

  • @lestervelez163
    @lestervelez163Ай бұрын

    Thanks You From Panamá 🇵🇦 City Thanks For help me

  • @2028end
    @2028end3 ай бұрын

    When I cleaned my IAC valve, afterward is when I had the 2000 rpm idle on startup (park) and neutral. After warmup it goes down to 1500 in park and neutral, and 1000 rpm in drive. What can I do? Been driving it a week and nothing is changing? Is there a way to pull the ECU fuse or something ECM fuse? To reset it? It obvious is retaining the old information when the valve was dirty and sticking, and now that it's free, moves easily, it's open to far and getting too much air.

  • @aftabqureshi981

    @aftabqureshi981

    19 күн бұрын

    Disconnect battery for at least 15 minutes then reconnect

  • @2028end

    @2028end

    18 күн бұрын

    @@aftabqureshi981 I tried that several times and doesn't change anything with my 1998 4Runner. I'm still driving it 2 months later with the same high idle readings. I'm thinking this truck probably needs it's idle to be reset with a computer or something? That's probably the only way? Because I looked at everything else and there's nothing leaking.

  • @peterbear6570

    @peterbear6570

    10 күн бұрын

    @@2028end Try with your hand and [engine running] to turn your throttle body assembly to closed position if the RPM go down, your throttle body butterfly is wear out, add a extra spring so the butterfly stay close tight it should fix the problem without spend too much money.

  • @justinmas299
    @justinmas2997 ай бұрын

    could be a worn throttle body butterfly, especially if you clean the old deposits off with a spray, oddly enough they help keep the idle tame, all from personal experience

  • @levizimmerman34
    @levizimmerman34 Жыл бұрын

    Love watching this as I'm mad dash restoring a 01 4 runner 😂

  • @christianvennetti3624
    @christianvennetti3624 Жыл бұрын

    98 4Runner 3.4 Will crank with Throttle position sensor unplugged (with a little help from gas pedal) but has a hard time cranking with sensor plugged in. Change the TPS? Very rough idle with this sensor plugged in or not

  • @travistucker7317

    @travistucker7317

    Жыл бұрын

    Clean your maf, tps, and iac. Google is there is a tps relearn procedure for 5vz engine. There probably is. Then check back.

  • @403outdoors4
    @403outdoors4 Жыл бұрын

    This isnprobly why mine idles weird on cold start I should check

  • @jordanlynch8185
    @jordanlynch8185 Жыл бұрын

    Sea-foam. Pour sea foam in the iacv tube then turn on. Had to resort to this cheap fix when I couldn't get the JIS screws. Cleared my code! Idles smooth as.. Those screws suck.

  • @sYnSilentStorm
    @sYnSilentStorm Жыл бұрын

    Mines only idling high when I first turn it on and it's cold out, once it warms up it idles normal, is this the same cause of the problem?

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    Nah, that is normal. I would not worry about that

  • @petrvales9869
    @petrvales9869 Жыл бұрын

    Love watching this considering I already spent hundreds of dollars to figure out my high idle issue with no success yet LOL being a self mechanic is a hobby for rich ppl.

  • @skatertrash4205
    @skatertrash4205 Жыл бұрын

    Cool video buddy

  • @malcolmeatuful
    @malcolmeatuful Жыл бұрын

    Where can I find the seal for the air control valve? I can’t seem to find it anywhere

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    I bought from dealership

  • @malcolmeatuful

    @malcolmeatuful

    Жыл бұрын

    Thank you!

  • @nemesis851_
    @nemesis851_ Жыл бұрын

    Oh sheet !!!! It’s Sunday ?!? Where did the weekend go ?

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    We clearly stick to our schedule very strictly here.

  • @Glocktard
    @Glocktard6 ай бұрын

    May 2001 Tacoma 3.4L had weird acceleration issue (sleight students/hesitation) when cold, I sprayed Amsoil power foam in the AIC and soaked it every other day for 4 days & then drove it. after that it fixed its self.

  • @rodneyrodriguez3676

    @rodneyrodriguez3676

    5 ай бұрын

    Did you take it apart?

  • @aaronscott2278
    @aaronscott2278 Жыл бұрын

    I did this and cleaned the whole intake manifold now running nearly 2000 rpms it was find tell I decided to clean my throttle body and intake it really sucks

  • @zombieslothcrapped

    @zombieslothcrapped

    7 ай бұрын

    Did you ever figure out what caused it? I'm having the exact same issue. Idle was fine before cleaning and now I'm between 1500-2000.

  • @aaronscott2278

    @aaronscott2278

    7 ай бұрын

    @@zombieslothcrapped kinda lol I replaced the toyota 3.4 idle air control valve and noticed before I fixed it the more I drove it the better it got

  • @stellamatutina3573

    @stellamatutina3573

    3 ай бұрын

    @@zombieslothcrapped I think over time when the carbon builds up in the throttle body and IAC the RPM can also drop and mechanics adjust the idle screw back up to 800 RPM. Then when someone cleans the throttle body and IAC the RPM go back up and you have to adjust the idle screw back down to around 800 RPM.

  • @2028end

    @2028end

    3 ай бұрын

    @@stellamatutina3573 Does the 1998 4runner have an idle screw? Because this is what I got now too ... after cleaning throttle body and IAC it's now 1500 to 2000 rpm in park or neutral. Ugghh I didn't know there was an idle screw?

  • @stellamatutina3573

    @stellamatutina3573

    3 ай бұрын

    @2028end Have a look just above to the right side of the accelerator adjustment cable with the two nuts, should be a flat screw in the throttle body, try turning it half turn to the left or until you get it at the right RPM while the car engine is running, warm the engine up first, keep it in the park position and bring the idle down to wear it should sit in park and hopefully when you put it into drive the RPM should come down 👍

  • @freddyrafaelariasinfante5688
    @freddyrafaelariasinfante56882 ай бұрын

    I have the same problem So I bought a new one but the problem does not go away .... Please help!!!

  • @jr567

    @jr567

    Ай бұрын

    Me too have same issue after changing it

  • @jr567

    @jr567

    Ай бұрын

    Me too i changed it and still same idling at 1200 rpms at park and neutral and in gear 850 -900rppms

  • @KasanShedd-sc6po

    @KasanShedd-sc6po

    23 күн бұрын

    You need to clean the butterfly valve on the throttle body itself as well. Clean both of those, put some seafoam in the tank and oil, run it for a few miles then do an oil change. That should just about clean everything and it’s relatively cheap and easy

  • @ESbro831
    @ESbro831 Жыл бұрын

    What’s the normal idle when cold start?

  • @megh9806

    @megh9806

    Жыл бұрын

    Mine is over a grand at cold but eventually idles around 600 when warm

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    We are currently 1200ish cold, and comes down to 700-800 warm

  • @joecoool100

    @joecoool100

    Жыл бұрын

    You can put manual hubs on the 3rd gen. Takes some press work and patience, but it can be done

  • @michaelrueckert8507
    @michaelrueckert85074 ай бұрын

    You have the lid from a brake cleaner can on your dashpot? lol

  • @RicardoRodriguez-bi7yk
    @RicardoRodriguez-bi7yk Жыл бұрын

    I cleaned my iac and know it's too low rpm at cold Start haha any suggestion ?

  • @megh9806

    @megh9806

    Жыл бұрын

    Vacuum leak from disassembling things?

  • @RicardoRodriguez-bi7yk

    @RicardoRodriguez-bi7yk

    Жыл бұрын

    @@megh9806 chekked, seems fine, low rpm at cold Start supossed to be for a vacuum leak?

  • @megh9806

    @megh9806

    Жыл бұрын

    Depends where the leak is. Could be low or high idle. Make sure all your hoses are on, not cracked and the throttle body bolts are all snug.

  • @RexDog

    @RexDog

    Жыл бұрын

    Try disconnecting the battery for a bit then hook it back up and turn the key to on for a few seconds should zero itself (hopefully)

  • @KCampen1986
    @KCampen1986 Жыл бұрын

    Where’s the video on the lights????

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    What lights?

  • @erebusros7807
    @erebusros78073 ай бұрын

    Any chance you have a slower video of taking all this apart? Hard for my ADHD brain to keep up with that speed

  • @LifeTimeDreams51
    @LifeTimeDreams51 Жыл бұрын

    🥇

  • @coolghoul9
    @coolghoul9 Жыл бұрын

    Is 1500 rpm high idle

  • @DirtGarage

    @DirtGarage

    Жыл бұрын

    Yes

  • @toyotadude6771

    @toyotadude6771

    7 ай бұрын

    Hell yeah thats high, even when its cold

  • @2028end

    @2028end

    3 ай бұрын

    @@toyotadude6771 Shoot, my 98 4runner is idling at 2000 when cold, then comes down to 1500 when warmed up, after I cleaned the IAC valve! Is there an idle set screw on the 98 4runner?

  • @15205golfer
    @15205golfer6 ай бұрын

    JIS screw driver

  • @elultimo102
    @elultimo1022 ай бұрын

    My '63 VW was a lot easier to work on---damned computers !!!

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