Volvo XC90 owner manual Three-way catalytic converter general information

11 Specifications

Three-way catalytic converter

Three-way catalytic converter - general information

•Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical, fuel or distributor ignition systems, may cause unusually high three- way catalytic converter temperatures. Do not continue to operate your vehicle if you detect engine misfire, noticeable loss of power or other unusual operating condi- tions, such as engine overheating or back- firing. 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 condi- tions.

•Excessive starter cranking (in excess of one minute), or an intermittently firing or flooded engine can cause three-way cata- lytic converter or exhaust system over- heating.

•Remember that tampering or unauthorized modifications to the engine, the Electronic Control Module, or the vehicle may be ille- gal and can cause three-way catalytic con- verter or exhaust system overheating. This includes:

NOTE

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

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