Cleaning throttle body on 2007 LS460.

Cleaning the throttle body plate can be done safely. Fly by wire units like the LS just gently use your finger to push in on the plate. Do not use a screwdriver to avoid it slipping and causing damage to the TB gears or scratching the plate or side walls. Only takes a few minutes and really only needs done once a year unless you put a lot of miles on per year.
The ECU will reset the calibration after a few short drives. Just need to clean off the plate both sides and the walls around where the plate touches.

[@skiboxing]

Excellent guide, Jonnyg. For future reference and saving your throttle body actuator and calibration, you can turn the car "on" and not start the engine (press the start button without holding the brake does the trick). Then you can have a friend or use a brick/stick/other contraption to hold down the accelerator pedal in the car. This will actuate the butterfly in the throttle body and you can get full access for cleaning. Just be sure that the pedal is held firmly because the butterfly motor has some serious torque and can do some finger damage pretty easily ;).

[@fishflash1]

I decided to clean mine out of curiosity/boredom. 2013 LS460 with 60k miles, never done previously. It was very easy and exactly how the video explained it. I used the rubber handle of a screwdriver to hold the plate open. I got all the surface buildup off. It wasn't very dirty at all. But I feel good about doing it. Now that I've got new plugs, clean MAF sensor and a bottle of chevron fuel system cleaner behind me, I feel the engine is running as intended.

[@jimhamilton3544]

Very nice video and throughly explained things to be aware off. Thanks just what I needed for my LS460 , 2008 with 134k never have cleaned it 🤔

[@johnnyglexus5730]

thx

[@sensay813]

My brother we always pull the EFI FUSE THERE'S 2 LOCATED IN JUNCTION BOX That holds the internal ABS relay. After pulling both fuses out the car we push the start button twice WITHOUT starting up the car, then use a brick, stick or another person to push the gas puddle all the way down to the floor and hold it there until done cleaning the throttle body. Clean it fast ass you don't won't the battery to die on you. After cleaning replace the fuses and all other components and start the car let it run for 5-10 min. After that if needed and you have techstream, you can calibrate the throttle body. It shouldn't need to be calibrate if it's done this way. The EFI fuses are for the electronic fuel injection. This will keep gas from dumping into the engine while your cleaning the throttle body. You'll need to clear all codes that are present when the job is done with a scan tool or techstream 👍

[@matthewjohnson3518]

Bruh that engine looks sick

[@ZLOZL1]

My 2012 Lexus LS460 just been showing signs of low idle around 500 rpm. I did some research and I’ve decided I should clean the throttle body because everything else is replaced and cleaned so this is the last option I’ll keep you posted on how it goes

[@johnbrown905]

My ls idles around 800-900. I thought that was high. Sometimes it idles at 500 where I think it should be. Does yours normally idle at 800?

[@ripwins]

Any more idle problems? how is car running ??

[@deonmayfield619]

How is it now?

[@fishflash1]

How many miles on the engine since the throttle body was last cleaned? My 2013 has 60k on it and I don't want to do this unless it's really going to make a difference. I understand you did this to make a video. It didn't look dirty enough to affect the performance of the engine under normal driving conditions. Very good video and explanation though.

[@johnnyglexus5730]

I have 180k on mine. I have never cleaned it so cannot say if had been done by last owners. Not something you need to do often.

[@Miha5571]

Thanks for your video. I have issue that sometimes my throttle closed totally during the driving ( I checked ir with comp diagnostic). And I have no response from accelerator. Maybe throttle stuck in closed position? What is your opinion? Thanks. Sorry fot my English.

[@johnnyglexus5730]

Sounds scary if your on highway. This video might offer some help. kzbin.info/www/bejne/sITPeX-agdKHfJY.

[@ibrahimi220]

I heard you say to not move the plate too much because you’ll hear clicking and that’s too far, but when you were moving the plate (at around the 14:19 mark)I thought I heard clicks. I’m concerned about attempting it myself - is some clicking okay? Thanks.

[@johnnyglexus5730]

Hey. Yes just be gentle with it when you open the fly. Do not rush or force it open hard. Cleaning helps.

[@tredi2]

I have shaking engine (also misfire faults on 4 and 5 cylinder) on cold idle, after coolant is getting warmer everything going back to normal. Replaced coils and spark plug with no results. I had identical problem with previous engine ( I had to replace it) and the only common part for both engines is throttle body. Do you guys think cleaning would be enough or I should take another shot and replace the throttle body?

[@johnnyglexus5730]

Hard to say it could e a sticking throttle body but the misfires i am not sure. I say give it a shot.

[@reneerogers9680]

Did this & now have Code p0123....relearn procedure???

[@johnnyglexus5730]

Might have overdid it. Try this....kzbin.info/www/bejne/jXa2oKd_jJZjn5o

[@SaltyD619er]

I have a low idle on my 07 LS 460! Do the same process

[@johnnyglexus5730]

Might help. These cars are notorious for low idle. Just don't over do it. I leave my air control system on all the time and it keeps the idle about 600-700. Any lower and the motor can stumble.

[@SaltyD619er]

@@johnnyglexus5730 thank you sir.

[@gt-c-]

I have a 2001 Lexus LS-430. Can not take down the intake boot I'm afraid to force it. Do I have to remove it from both sides or only the side where attaches to the throttle body? I have the code P0174. What shall I do?

[@johnnyglexus5730]

See this video. kzbin.info/www/bejne/eau0i6Gppax3pMk

[@gt-c-]

@@johnnyglexus5730 Saw it already, I also have a comment there related to this.

[@johnnyglexus5730]

If you have enough room to reach in and clean it with just one side off than ok. Don't take. much to remove whole intake tube by looks of it. That code is a vacuum leak. Probably wont solve your issue with a cleaning.

[@gt-c-]

@@johnnyglexus5730 Correct: System too lean (Bank 1) for P0171 and System too lean (Bank 2) for P0174. So how do I fix this 'vacuum leak'?

[@johnnyglexus5730]

@@gt-c- A lot of things can be happening. TB cleaning is one place. Check all vacuum hoses possible exhaust leak or bad O2 sensors. If you cannot self diag than have to take it to a good shop.