How to Clean the Throttle Body in the Audi A4
- 1). Remove the air duct tube from the throttle body. You will need to unscrew the hose clamps to remove the tube.
- 2). Spray throttle body cleaner onto the throttle body, both inside and out. Allow it to liberally cover the throttle body and butterfly valve but avoid the throttle body sensors.
- 3). Wipe off the throttle body cleaner using a clean rag. Use a toothbrush to get the smaller areas that the rag cannot easily reach.
- 4). Repeat Steps 2 and 3 until the Audi's throttle body is completely clean.
- 5). Reattach the air duct hose and tighten the hose clamp.
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