Catalytic Converter - Volvo 740 1989 Owner's Maintenance Manual

1989 Volvo 740
Check that cars are not touching to prevent premature completion of negative circuit.
Note position of the battery terminals and using jumper cables:
First connect booster battery positive (+) terminal (1) to car battery positive (+) terminal (2).
Then connect booster battery negative (-) terminal (3) to a stationary solid metal part on the engine at
a point away from the battery (4).
Do not connect booster cable to any part of fuel system or any moving parts. Avoid touching hot
manifolds.
After engine has started, remove first the negative (-) terminal jumper cable. Then remove the positive
(+) terminal jumper cable.
WARNING!
To reduce the possibility of explosion, never expose battery to open flame or electric spark. Do not
smoke near battery. Batteries generate hydrogen gas which is flammable and explosive.
The battery contains sulfuric acid which can cause serious injury. If the acid comes in contact with
eyes, skin or clothes flush thoroughly with water. If eyes are affected. seek medical attention
immediately.
pg. 60 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 temperature. < Br> 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 backfires. A properly tuned engine will help avoid
malfunctions that could damage the catalytic converter.
Remember that tampering or unauthorized modifications to the engine or the vehicle may be illegal
and can cause catalyst or exhaust system overheating. This include Altering fuel injection settings or
components. Adjusting ignition timing beyond specified limits. Altering emission system components or
location or removing components. Repeated use of leaded fuel.
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