Your video is the DIY only, and if they do not have a scan tool to reset the idle speed after cleaning the TB properly. I must disagree with you, who is a professional and you should not teach this type of improper job, people can afford to own a car, then they can also afford to pay for proper cleaning, this should be part of a tune-up and people need to maintain their car so they can get better fuel economy, that is what you need to teach please, cheers.
You need to remove the part and clean both ends with a tooth brush and throttle body cleaner.
The half arse job just makes the person a full arse
Your video is the DIY only, and if they do not have a scan tool to reset the idle speed after cleaning the TB properly. I must disagree with you, who is a professional and you should not teach this type of improper job, people can afford to own a car, then they can also afford to pay for proper cleaning, this should be part of a tune-up and people need to maintain their car so they can get better fuel economy, that is what you need to teach please, cheers.