2008 Lexus IS 250 Intake runner repair

I made this short video for my son to explain to him why he was getting a check engine light in his car. The check engine light along with the vehicle stability control warning light stayed on constantly but didn’t appear to run bad or anything.
The first shot is of the two codes that I pulled off the computer. The last shot is a picture I took of the runner control motor as I found it when I took it apart with a nut laying inside.

[@ospuddy]

Thanks for the video. I wanted to see those swirl control valves up close. Those butterfly valves are there to change the swirl pattern as the air enters the combustion chamber. When the valves are closed, the swirl is horizontal to the piston top. When the valves are open, the swirl is vertical to the piston top. The swirl patterns are there to promote good air and fuel mixture. The valve that changes the runner length is in the plastic upper intake manifold (air surge tank) and is part of the Acoustic Control Induction System (ACIS). Your video is way cooler than the diagram in the manual. Thank you!

[@dude12348]

this video was so extremely helpful. thank you for taking the time to post this!

[@stearman]

You’re entirely welcome. I’m glad you got some use out of it.👍

[@nelsonmaldonado7094]

Thanks for that video I check mine today and when I remove de sensor the little nut was completely out,I put back with Little bit of locknut glue but Still have the issue the RPM don’t pass 4500

[@j73millet]

You got a part number I can get my Lexus is doing that too

[@Zborrb]

actully i am thinking to take mine out totally . that can brake the engine if one of the screw fall in the engine . i had mine complety open (with check engine light ON) and no different make apart the it was given a good kick ...

[@Zborrb]

also the is350 doesn't have the swirl flps and is not direct injector

[@thechapman4894]

Did you clear the code when you out everything back together? I have the same problem

[@PS_D.]

Hello, I also have a problem (code:P2006 make manifold air control operator,bank1 - actuator stick closed) Please help me. And where do you sell the parts?

[@jokerdejesus4756]

Thank you sir I have the same code on my lexus will check that but to see if it backed out and can I use lock tite to make sure it doesn't back out again

[@stearman]

Yes, use blue lock tite, or for a more permanent bond, use red.

[@Getshartedon]

Part number for the Runner? Can’t find a part for it.

[@malcolmvalintine9055]

i have rebuilt the whole intake runner and replaced the sensors and the code still won’t clear.

[@stearman]

It has been so long since I did this, I can’t remember the code. Bank lean or rich? Leaking and or rotted, cut vacuum hoses will also cause these type codes. Also bad POV or CCV systems can do it also.

[@NewBeginningNewCreation]

That last part you showed with the bolt without loctite. Is that the runner actuator?

[@stearman]

I guess that would be a good name for it. I put that nut shown in the still photo at the end of the video back on the gear shaft with red loctite. That last pic shows how I found it when I opened the actuator. Nut just laying in the housing. Pitiful design.

[@NewBeginningNewCreation]

@@stearman gotcha. Did your son say he had grinding noises at random times while driving? That's what I've been having happen and I'm wondering if that nut could be the culprit