Uploaded April 2026 | Updated September 2026, 1 week ago
How to remove, clean and replace the throttle body on a 2006 to 2013 Toyota Yaris Mk2 with the 1.0 litre 1KR-FE 3-cylinder petrol engine. A dirty throttle body can cause several performance issues in your vehicle. Common symptoms include:
Rough or erratic idling:
A dirty throttle body can disrupt airflow, causing the engine to idle unevenly or shake.
Poor acceleration:
Reduced airflow can lead to sluggish or delayed acceleration when you press the gas pedal.
Stalling:
In severe cases, a dirty throttle body can cause the engine to stall, especially at idle or when coming to a stop.
Check engine light:
The car's computer may detect the issue and trigger the check engine light.
Reduced fuel economy:
Inconsistent airflow can affect the air-fuel mixture, potentially leading to decreased fuel efficiency.
Hesitation or surging during acceleration:
A dirty throttle body can cause the engine to hesitate or surge when accelerating due to inconsistent airflow.
Visible grime or carbon build-up:
You may see dirt, grime, or carbon deposits on the throttle body itself
If you experience any of these symptoms, it's worth cleaning the throttle body to see if the symptoms improve.
NOTE: It is highly recommended to disconnect the negative battery terminal before removing the throttle body to prevent electrical shorts, protect the ECU, and prevent the throttle motor from activating unexpectedly. Disconnecting the battery also helps reset the ECU's memory, clearing old idle adaptations.
Key Reasons to Disconnect:
•Safety: Protects against electrical shorts, as the throttle body features an electrical connector for the throttle position sensor.
•ECU Protection: Prevents damaging the car's computer when disconnecting the throttle harness.
•Idle Management: Allows the ECU to clear old idle adaptations, making it easier to recalibrate the throttle position after cleaning, if necessary.
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All of my uploaded material is protected under copyright law. None of my videos may be re-uploaded, reproduced or transmitted, in part or in full, in any form or by any means, without the written permission of the copyright holder.
©Youtube.com/Screwsnutsandbolts 2026
Read important information below:
Disclaimer:
My videos are a guide to making repairs and also to provide helpful information.
Do not attempt to make any repairs unless you’re sure you know what you’re doing. For more detailed information, if something is not clear to you, or you don't understand something, have the repair carried out by a qualified mechanic or at your local car dealer. Any repair you carry out on your car you do at your own risk.
Under no circumstances will Screwsnutsandbolts be responsible or liable in any way for any content, including but not limited to, any errors or omissions in the content, or for any loss or damage of any kind incurred as a result of any content communicated in this video, whether by Screwsnutsandbolts or a third party. In no event shall Screwsnutsandbolts be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits arising out of or in connection with the availability, use or performance of any information communicated in this video. Due to factors beyond the control of Screwsnutsandbolts, it cannot guarantee against improper use or unauthorized modifications of this information. Screwsnutsandbolts assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Screwsnutsandbolts recommends safe practices when performing any do it yourself repairs and or with tools seen or implied in this video. Due to factors beyond the control of Screwsnutsandbolts, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Screwsnutsandbolts.
How to remove, clean and replace the throttle body on a 2006 to 2013 Toyota Yaris Mk2 with the 1.0 litre 1KR-FE 3-cylinder petrol engine. A dirty throttle body can cause several performance issues in your vehicle. Common symptoms include:
Rough or erratic idling:
A dirty throttle body can disrupt airflow, causing the engine to idle unevenly or shake.
Poor acceleration:
Reduced airflow can lead to sluggish or delayed acceleration when you press the gas pedal.
Stalling:
In severe cases, a dirty throttle body can cause the engine to stall, especially at idle or when coming to a stop.
Check engine light:
The car's computer may detect the issue and trigger the check engine light.
Reduced fuel economy:
Inconsistent airflow can affect the air-fuel mixture, potentially leading to decreased fuel efficiency.
Hesitation or surging during acceleration:
A dirty throttle body can cause the engine to hesitate or surge when accelerating due to inconsistent airflow.
Visible grime or carbon build-up:
You may see dirt, grime, or carbon deposits on the throttle body itself
If you experience any of these symptoms, it's worth cleaning the throttle body to see if the symptoms improve.
NOTE: It is highly recommended to disconnect the negative battery terminal before removing the throttle body to prevent electrical shorts, protect the ECU, and prevent the throttle motor from activating unexpectedly. Disconnecting the battery also helps reset the ECU's memory, clearing old idle adaptations.
Key Reasons to Disconnect:
•Safety: Protects against electrical shorts, as the throttle body features an electrical connector for the throttle position sensor.
•ECU Protection: Prevents damaging the car's computer when disconnecting the throttle harness.
•Idle Management: Allows the ECU to clear old idle adaptations, making it easier to recalibrate the throttle position after cleaning, if necessary.
Thanks for watching. Please comment, like and subscribe !.
All of my uploaded material is protected under copyright law. None of my videos may be re-uploaded, reproduced or transmitted, in part or in full, in any form or by any means, without the written permission of the copyright holder.
©Youtube.com/Screwsnutsandbolts 2026
Read important information below:
Disclaimer:
My videos are a guide to making repairs and also to provide helpful information.
Do not attempt to make any repairs unless you’re sure you know what you’re doing. For more detailed information, if something is not clear to you, or you don't understand something, have the repair carried out by a qualified mechanic or at your local car dealer. Any repair you carry out on your car you do at your own risk.
Under no circumstances will Screwsnutsandbolts be responsible or liable in any way for any content, including but not limited to, any errors or omissions in the content, or for any loss or damage of any kind incurred as a result of any content communicated in this video, whether by Screwsnutsandbolts or a third party. In no event shall Screwsnutsandbolts be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits arising out of or in connection with the availability, use or performance of any information communicated in this video. Due to factors beyond the control of Screwsnutsandbolts, it cannot guarantee against improper use or unauthorized modifications of this information. Screwsnutsandbolts assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Screwsnutsandbolts recommends safe practices when performing any do it yourself repairs and or with tools seen or implied in this video. Due to factors beyond the control of Screwsnutsandbolts, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Screwsnutsandbolts.
