Volvo XC90: Emission controls - STARTING AND DRIVINGVolvo XC90: Emission controls

Three-way catalytic converter

  • Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical, fuel or distributor ignition systems, may cause unusually high threeway catalytic converter temperatures. Do not continue to operate your vehicle if you detect engine misfire, noticeable loss of power or other unusual operating conditions, such as engine overheating or backfiring. A properly tuned engine will help avoid malfunctions that could damage the three-way catalytic converter.
  • Do not park your vehicle over combustible materials, such as grass or leaves, which can come into contact with the hot exhaust system and cause such materials to ignite under certain wind and weather conditions.
  • Excessive starter cranking (in excess of one minute), or an intermittently firing or flooded engine can cause three-way catalytic converter or exhaust system overheating.
  • Remember that tampering or unauthorized modifications to the engine, the Engine Control Module, or the vehicle may be illegal and can cause three-way catalytic converter or exhaust system overheating. This includes: altering fuel injection settings or components, altering emission system components or location or removing components, and/or repeated use of leaded fuel.

NOTE

Unleaded fuel is required for vehicles with three-way catalytic converters.

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.

Octane rating
Volvo requires premium fuel (91 octane1 or higher) for all T5, T6 and T8 engines, and recommends AKI 93 for optimal performance and fuel economy. See decal examples in illustrations 1 and 2. Minimum octane ...

Overheating of engine and transmission
In certain driving conditions, such as driving in mountainous areas or hot weather, there is a risk of the engine or transmission overheating, especially when carrying heavy loads. Engine power may be ...

See also:

Data sharing for services
If you haven't activated data sharing for a connected service or for downloaded apps, you can do this when you start them in your center display. The first time that you start a service, or e.g. after ...

Front Body. Body Repair
Front Body A * These dimensions indicated in this figure are actual-measurement dimensions. [ Unit : mm (inch) ] Front Body B * These dimensions indicated in this figure are actual-measurement dimensions. ...

Playing media
The media player is controlled from the center display. Several other functions can also be controlled using the right-side steering wheel keypad or by using voice commands. The radio can also be controlled ...