Why Does Fuel Consumption Increase After Cleaning the Throttle Body?

1 Answers
SanElla
07/30/25 7:38am
There are two main reasons for increased fuel consumption after throttle body cleaning: 1. Failure to perform or successfully complete ECU adaptation after cleaning: After throttle body cleaning, the throttle position becomes unfamiliar to the engine control unit (ECU), causing confusion in throttle opening control and resulting in increased fuel consumption. 2. Poor self-learning capability of the ECU in some vehicle models: Due to this uncontrollable factor in certain models, fuel consumption may temporarily increase for a short period but will return to normal after some driving.
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