Volvo 240 Owner's Manual page 68

Volvo 1990 240 Model
pg. 52 Catalytic Converter
Catalytic Converter Cautions
Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical,
fuel or ignition systems, may cause unusually high converter temperatures. Do not continue to operate
your vehicle it 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 in avoiding malfunctions
that could damage the Catalytic Converter.
Remember that tampering with or unauthorized modifications to the engine or the vehicle may be
illegal and can cause catalyst or exhaust system overheating. This includes:
-- Altering fuel injection settings or components.
-- Adjusting ignition timing beyond specified limits.
-- Altering emission system components or location or removing components.
-- Use of leaded fuel.
WARNING: Do not park your car 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 continuous minute) with an intermittently firing or
flooded engine, can cause catalyst or exhaust system overheating. This also applies to lengthy pushing or
towing of vehicle to start (manual transmissions only). Do not attempt to start a car with automatic
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