Guys,

Just felt like sharing my experience, I have a 2007 GS 350 AWD, it has 130K Miles, I never did MAS or throttle body cleaning until today. I decided to use CRC MAS cleaning agent for the job, I didnt bother about buying the CRC throttle body agent as I thought logically about it. MAS is very sensitive and if that CRC MAS agent wont harm it then it will not harm the throttle body. So i went ahead and cleaned both with it. A lot of black mess was on the throttle body, i was amazed, all was removed with a shop towel and I did tilt it manually to clean the back of the plate (throttle body was not removed). I turned on my car and there was a slight vibration for one sec then the idle was rough (close to 2000RPM), my idle is usually 800RPM. I got scared and thought that i might have left a hose lose or something. I hit the internet and a couple of posts mention that the engine is supposed to do that and it is a good indication that the throttle body was dirty. they suggested to disconnect the battery for 15 min which i did. I came back, turned on the engine and a I experienced a harder vibration for a couple of secs. drove the car for a mile or two, things were getting better, I turned it off then on, and it was butter smooth. my idle has improved even better than before, it is running now at about 600RPM. i felt a big difference. It was worth it. What I wanted to point at is the possibility to save money and just buy the MAS cleaning bottle.

 

Make sure to remove the battery or the TB wire. The TB is designed to clear ice, it is not finger friendly.

 

thanks for the advise, its too late now. I will update the post if i experience any problem for others to be aware