Heated oxygen sensors
The heated oxygen sensors monitor the oxygen content of the exhaust gases. Readings are fed into a control module that continuously monitors engine functions and controls fuel injection. The ratio of fuel to air into the engine is continuously adjusted for efficient combustion to help reduce harmful emissions.
See also:
2005 Volvo S40 Review
Volvo's compact S40 sedan looks great and has a nicely appointed interior.
The fact that it's available with a turbocharged engine and all-wheel drive only
heightens its appeal.
The S40 has two ...
Getting started
Use the controls on the steering wheel keypad and in the center console to access,
navigate and make selections in the hands-free system’s menus. ...
Belt check
Check the belt regularly to make sure it is in
good condition and is clean. A worn or dirty belt
can cause poor cooling and low alternator output
as well as impair the operation of the power
steer ...