Throttle Bore & IAC Service Toyota Tacoma 1995-2004
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- Опубликовано: 13 янв 2016
- In this video we show how to service the throttle bore and the IAC on a Toyota Tacoma from years 1995-2004.
If you have any further interest please visit www.2carpros.com
*Disclaimer: Please use all safety precautions 
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Thanks again, after replacing my air intake hose I followed this video to clean my throttle body and IAC. It was very dirty with 238k but it cranked right up and runs great. Thanks also to the folks who left comments and tips. 2000 prerunner V6.
2 car pros are badass!
They're videos are clear and down to the point. They've even answered my questions in detail through their website.
Hands down, one of the best produced instruction vids on YT.
Hats off to your cameraman too. Subbed to your channel and looking forward to browsing other material.
Oh thank you so much for saying that! That is so nice! Well I am creating content once a week every Saturday. :)
He missed so much.
Thanks for the video! My son and I just completed this on my 02 Tacoma!
It worked great and runs prefect again!!
Nice work!
This is, without a doubt, the very best video I have ever seen on youtube. Great camera work. Great demonstration on how to clean throttle body and IAC.
Glad you enjoyed it!
Hi is this cause no compression in the cylinders
Very well done short and to the point in very understandable language.
Estuve días buscando un video en español para hacerlo y no pude, por suerte di con tu canal. Muchas gracias, saludos desde México!
This is a good video thanks for posting. I have a 02 Tacoma and will be doing the same service with confidence because of your videos. Thank you. And this music 🎶 wasn’t to bad.
No problem 👍
Great vid. Did this yesterday but your vid is way better than the one I watched
Thank you so much for watching!
Step by accurate step instructions.... thank you.
Thanks for watching!
Thanks for video. This video is perfectly for me to follow service my 3rd gen 4runner.
Great to hear!
Thank you much. I really appreciate it
Thank you for watching!
Good and straight to the point.
Thank you for watching!
all good, but missed re-installing the 3rd throttle cable off the throttle body -
Thanks for the helpful video.A comment about installing new gaskets would be good. There is a plier that is for those pesky hose clips.
yes; the throttle mounting gasket is thin metal and is 'crushed' to make a good seal, so a new one is needed when re-attaching the throttle body...
320k miles on my 2002 Tacoma pre runner probably should do this.
338K on my '02 Tacoma, I just did this work and had a beer afterwards.
I have a 2002 also, but with 144,200 on it! Tacoma are awesome ain’t they!!!
03 Tacoma 4 banger here. It’s got kind of a rough idle. I plan to do this. Needs a new catalytic converter as well. Other than that runs like a damn horse. Will update if this helps the idle. 190k miles.
My 2004 3.4 Pre runner has a different throttle body than this throttle body.It has no access to IAC.
3888k in my taco 🌮 98 2.4l. l never have any problem with the idle running like 0k 🤣🤣🤣💪💪💪
Good video. I must say, however, that carburetor cleaner may adversely affect certain kinds of rubber gasket, causing them to swell and/or crack, so I generally use citrus based solvents, which do not contain alcohol or petroleum based solvents. (I have made this mistake before :) ). Thank you for your high quality video, I loved the in depth and easy to follow instructions.
Thank you for your pro input.
This was REALLY helpful. It looks like am going to save myself $200.00
Awesome! That is some serious cash! Thank you so much for watching!
Thank you!!
Thanks for watching!
very nice thank you
Thank you for watching Mike!
Is it standard to service it without symptoms, preventative? Would verifying proper functional elec test only be done if it's not working right? Thanks for making the vid!
You say to use carburetor cleaner. Shouldn't it be throttle body cleaner? Also do you reuse the old gaskets, even the metal one? One last question. How often should this be done? Great video.
Did this job recently. Spent a lot more time cleaning my ISCV. Tip- remove gasket so it does not get cleaner on it. Mine got swollen and could no longer fit. Now idle is very high and I am trying to bring it down. It used to fluctuate a lot and more recently it was cutting off and triggered check engine light.
Curious to what your outcome was? Mine is doing the same after cleaning it
Wait a minute, first, "this hose" is a coolant hose, a warning about that is warranted...possibly even pinching off that hose. Secondly, why would you ever suggest using carburetor cleaner? Carb cleaner is heavily concentrated with ether, and ether will eat away at the coating applied to all fuel injected vehicles in latter years to reduce carbon buildup. Use throttle body cleaner only for this task. Why not explain why that oily buildup exists in the upper intake plenum? If you're at this point, you might as well suggest at the very least replacing the pcv valve....a warning about the high idle speed and the relearn of the tps would be nice. Not to nitpick, but if you're doing "pro" content....
10 out of 10 👍
Thanks for watching!
perfect, thanx for that
You're welcome!
It's a 3.4v6 5vze... Excellent video. I like how you make it really easy to see all the bolts, etc. you have to remove. Seems you forgot to mention you need to drain the coolant a lil, so coolant doesn't flow out of the hose you removed from the IAC. Or you can also not drain the coolant and just hold the hoses up above the coolant level with tape or a hose clamp. Your choice.
Mr. Bosch Thanks for the tip.
I have an 03 Tacoma 3.4l same engine and my throttle body looks nothing like this
how to you guys remove the large hose from the throttle housing? the one connected to the air intake? i have the 2001 tacoma. thanks.
why didn't you removed the iac motor from the valve?
Great video. The 2004 3.4 v-6 has a different throttle body. It doesn't have the iac on the bottom of the TB. Still a good idea to remove the TB and do a good cleaning.
Thank you for watching!
Agree, one of the best videos I have ever seen!
Do you have to bleed the system after putting everything back to place since some of the hoses where coolant runs were disconnected?
probably wouldn't lose enough coolant to warrant bleeding the system. if ya need to, top up coolant level if it has gone down. otherwise take it for a drive and check once its cooled down again.
My IAC is corroded to the tb from a coolant leak. Three of the screws that hold the IAC to the tb won't budge. How would you get those off? I only managed to remove one screw out of four.
I have a tacoma 2002 2.7-liter 4-cylinder engine does not have light on but the accelerator pedal is a bit heavy and birds do not accelerate as it would be what the problem would be
Hello,I have Toyota Corolla Fielder motor 1.8 1ZZE, I did a test, I removed the rubber from the air filter, so I had access to the throttle body, I started up and gradually covered the air intake that enters the IAC valve, as the covers stretch to stop until when completely covered, the engine stops. But I can't find the fault, which is that it starts and as it warms up the rpm goes up to almost 2000 rpm. Then when driving on the street or highway, if you leave it in neutral, the rpm goes up to 2000 and goes down to 1000 until in a moment if I stop the car they go to 2000. A query, I made contact, I measured the female card of the IAC with tester and 12 volts to the positive (black cable) arrive at the connector, nothing to the ground cable and the other signal 0.14 volts and the signal 0.14 volts..., I also tell you that if I disconnect the connector from the IAC, the car runs and does the same problem. I am very concerned that it may be the ECU that may be sending an inappropriate voltage. thanks for your help
Anything on an 86 toyota truck 4wd efi 22re where the IAC is not bolted to the throttle body but is way under the damn thing?..thks jc
Cleaned mined while ago but keeps hard starting cranks alot no engine light changed fuel pump tps sensor plug wires and fuel regulator but still hard starts even when its warm or cold sometimes starts right up but very rare can this be the problem? Thinking of putting new iac
If you have done this service and still getting a code for the IAC do you replace it to remedy?
All new gaskets for reinstall, and watch those coolant lines for awhile, as they sometimes will leak.
Great
This video makes it look easy 5 starts
Next, you're left with a high idle after cleaning! Uggh! That's what happened to me! Before cleaning, car was shutting off at stops, after cleaning, now a 2000 idle on cold start and 1500 idle once warmed up in park and neutral, 1000 rpm in drive was warmed up. Been driving the 1998 4runner for 2 weeks, nothing's changing. Don't know what to do. Unhooked battery for an hour but that did nothing. : ((
Does antifreeze run through the IAC? I’m asking because when I removed my hoses antifreeze came out.
Yes through bottom of IAC.
Yes, he only showed one water line being disconnected. Shoddy at best.
Nice video, however, do not use carburetor cleaner. Instead use throttle body cleaner. Carb cleaner leaves deposits whereas throttle body cleaner does not and is made just for this job.
I use brake cleaner.. as long as you dont got any sensors poking out or plastic junk anywhere you should be good..
Listen to this guy. Throttle body cleaner leaves a dry lubricant behind and as another commenter mentioned its not too harsh for on plastics or throttle position sensors and iac valves
Since it was all cleaned out, will it cause the idle be high now? If so do you adjust the idle or just restart the battery?
It will should self adjust. Thanks for watching!
96 Tacoma 4 cyl 2.4 litre Error Code P0505, we'll give this a try, thanks!
Does this fix engine stalling and rpm fluctuations while coasting in neutral
How play should there by with the butterfly? Mine moves in and out if I pull it when it's not running. I mean pulling toward the front of the truck. There is noticeable play from side to side of the throttle body. Truck has 585K miles.
What about spraying cleaner on that IAC gasket? Wouldn’t that damage the rubber gasket? That metal throttle body gasket is a one time use gasket , it crimp seals when the throttle body is reinstalled.
some in other videos suggest doing it upside down and wipe the crud away with clean paper towels to prevent entering the iac.
Is there anything different for a 2002 toyota 4runner, or is the procedure the same??? Would greatly appreciate an answer, thanx!
Should be really similar if not the same. Thank you so much for watching!
the same
scott fresiher I have not yet done this, but supposedly it “learns” how to control idle again after cleaning. Just gotta drive around for a while, I have heard.
Good video ! What is u used to clean ?
Carburetor spray. Thank you for watching !
hello i had a bad TPS throttle control sensor then i replaced with a aftermarket one it only last like a week do you guys think i should check something else???
What are your symptoms? Codes?
Sorry to bother you I have a question I was removing the radiator on my car and my throttle body was exploded I accidentally dropped a small amount of coolant into it and it went down what should I do
If you are worried that coolant is in your engine, I would take the spark plugs out and crank it slightly and watch how much comes out of the spark plug holes. Then I'd change the engine oil to be on the safe side. Thanks for watching!
I got same motor but my tb doesnt have that iac deal on it at all. Wtf? I confused.. my cruise ctrl works electronically also. Is an 03.. has a little motor inside and all.. thought that was odd but now i know its odd.. wonder if the tb was replaced with a newer models.. but the wiring wouldnt have been there.. just confusing myself more.. i know it wasent an option from factory..
would u need to replace the metal plate ?
u didn't check the operation of the IAC valve. it may be barely operational. there are bearings inside that need lubrication.
I cleaned the throttle plate on one of these without removing the throttle body from the truck. I would caution anyone who does so to spray the cleaner on a shop rag. Do not spray cleaner into the throttle opening. Dissolved crud will run into the IAC, necessitating removal of the throttle body.
Is a high idle normal after cleaning tb and iac?
Oscar Flores It does often happen. The computer should relearn soon after.
It happens a lot.. but should go away after a minute or two. Try shutting the vehicle off and restarting it if not. You also could have coated one of the sensors with the cleaner spray which is causing it to misread... should go away too after a minute unless you used something like brake cleaner on your intake parts (don't recommended).
I don't see this IAC anywhere on my 2004 runner.
I wouldn’t say the first thing is the electrical plugs considering I have an entire air take hose in the way. Definitely didn’t know or need to see how to take that off
Does anyone understand why even after I replaced the idle air control my truck idles at 2300 rpm.
Hey how do I get your guys expertise? I’m dead in the water. How can I get ahold of you?
You can go to our website 2CarPros.com and ask a question for free! Thanks for watching!
Hi there, so my flap isn't closing all the way on my 2001 tacoma throttle body & its causing idling issues, can I fix it or do I nd a new one? Thanks in Advance
Isn't closing, or there's space around it when it is closed?
There may be an adjustment screw for the tilt action limit of the plate. (I haven't checked)
OR
It's apparently common among these Toyotas that a gap forms between the throttle plate and the bore of the throttle body housing. I just saw guys in a forum mention using a business in FL called MaxBore for doing a re-bore/plate service on their throttle body and it solving the idle issues.
I'm chasing the gremlins too. Good luck
@the_Boost_within yup I seen that also @ maxbore in Florida, I just bought one from pick a part with low miles on it for like $40, thanks tho!
I believe the 03-04 Tacoma is electric TB, so it looks completely different from your… just a heads up
This is just PM care. Or when your vehicle is idling ruff or dying?
You could look at it as PM but really I only do it when the vehicle is idling rough or throwing a throttle actuator trouble code. I even fixed a pedal positioning sensor code once by doing this. Thanks for watching!
2CarPros
Awesome. Thank for getting back to me. Nice job on the video.
My truck is throwing the check engine light and idling high/rough occasionally, it comes and goes. Last time my truck did this it was winter and it idled really high (behaviour is not quite the same this time). Last time toyota dealer sourced a used throttle bottle as they cited a sensor as the issue and said they were not replaceable on their own. A) is that true? B) My mechanic (not toyota dealer) said the current error is associated with O2 sensor, but said as long as it is running okay to just leave well enough alone. Is it possible that current issue is a dirty throttle body? It was replaced 5 years ago and has had less than 10,000 miles on it since that time.
Yeah it could just be a dirty throttle bore and IAC. I'd clean both and see what happens. Thank you for watching!
can you use throttle body cleaner instead of carb cleaner?
Yeah. It is typically the same thing. Thanks for watching!
How often should this be done. I have 153k on my 2000 2.4lt
Maybe every 60K? Usually do it when it starts causing a problem. Thanks for watching!
why does look like the mirror opposite of my 2000 2.4 4 cyl ? In this video the throttle cables are coming from the driver side unlike my vehicle where they are coming from the passenger side.
michael christensen probably because this is a different engine
michael christensen because this engine is a 3.4 6 cyl
Why didn't you test the IAC valve before you reinstalled it ?
Usually works after a service. If it still didn’t work then I’d replace it. Thanks for watching!
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thanks for sharing bro. let me show the original RPM in speed meter and the voice from the silencer and engine too.
I think the accelerator cable was forgotten on the install ooops. I'll just use my feet like the Flintstones, do.
I did this now it sounds all choked up when I step on gas
Check the Throttle Position Sensor, rear side of the throttle body shown at 0:25 in this video.
I’m no mechanic, so is this about a 3 hour job?
Yeah if you were doing it at home it might take that long if you really take your time. Thanks for watching Jim!
Not pictured: stripping the crap out of the screws that hold the IAC to the throttle body
You gotta be really careful. Thanks for watching!
for toyota sequoia 2001 how you do
My 02 made a knocking noise for a min when cold, i think due to a lean fuel issue, cleaned throttle plate and no more knock...take it if she goes lol
timing chine meed replaceing
Jesse Jordan Bell
Nice spelling🤦🏻♂️
and if you lose that metal gasket with the embossed snake around the vac ports then youre fucked. I can't find that part anywhere. I don't want the fiber one, where are the metal ones!!
my 2002 TB looks nothing like this one I'm so lost
There were different motor sizes for this body style truck. It might look different but it is still the same process.
Haynes Manual for your particular vehicle will give you a picture of your engine. The procedure is the same as the PROS have neatly indicated!
What was the point of cleaning that ? It didn’t look that dirty
What's the point of wiping your ass if you're going to use the restroom again?
That gasket needs to be replaced.
Have you ever run into an instance where cleaning the IAC caused an air leak?
rustyATV It can if you forget to install a gasket or don't tighten up the bolts.
4:53 to 4:59 he installs the idler air control without draining that puddle of accumulated cleaner! oops!
It evaporated before we replaced the IAC. Carb cleaner evaporates fairly quickly. Thank you for watching!
@@2carpros that's right it'll evaporate in seconds
They always put the most annoying music in these videos 😂
Trust me you would hate it more if it was just silence. Thanks for watching!
Attached to the IAC is a grayish/greenish plastic part. Doesn't that part have something that spins round and round ? If yes, shouldn't it be cleaned also ?
That is the gate. Its need to be taken off, and then the gate needs to be spun around while blasting with cleaner. One of the most important things. It wasnt done in this video.
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