Throttle Body: Carbon Build-up and Electronics

Introduction

The throttle body controls airflow into the engine. Dirty or faulty, it causes rough idle.

Mechanical vs electronic throttle

Detailed guidance — practical steps, procedures and indicative costs for UK drivers.

Carbon build-up

Detailed guidance — practical steps, procedures and indicative costs for UK drivers.

DIY chemical cleaning

Detailed guidance — practical steps, procedures and indicative costs for UK drivers.

Throttle body relearn procedure

Detailed guidance — practical steps, procedures and indicative costs for UK drivers.

Motor replacement

Detailed guidance — practical steps, procedures and indicative costs for UK drivers.

Conclusion

Regular preventive maintenance and knowing your vehicle helps you avoid most costly breakdowns.

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