Mechanical Fault In the Throttle Body (TB)

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

If there is a mechanical malfunction in the throttle housing it must be replaced as a complete unit.
The throttle disk must not be adjusted.
The throttle housing may require cleaning to remove carbon or oil deposits.
If the throttle position sensor is malfunctioning it must be replaced.