WWW.MANUALS.WS
WWW.MANUALS.WS
1993 Volvo 240
Fuel system cap, tank, lines and connections
The ability of the fuel system to control hydrocarbon emissions is dependent largely on a leak-free
system. Check for proper sealing of gasoline filler cap which contains "O"-ring type seals. Check all
evaporative hoses in vehicle for tightness. Check fuel lines under vehicle. Repair if necessary.
Timing gear belt
B 230 F
We recommend that the timing gear belt be replaced every 50,000 miles (80,000 km)
B 230 FD only: Replace the timing gear belt every 100,000 miles (160, 000km)
Air cleaner
Replace the air cleaner cartridge every 30,000 miles (48,000 km) The cartridge should be replaced more
often when driving under dirty and/or dusty conditions.
The filter cannot be cleaned and should always be replaced with a new one.
Checking and adjusting idle speed
Your Volvo is equipped with an electronically controlled idle air control system that requires no periodic
checking or adjustment.
Heated oxygen sensor system
This is an emission control system designed to reduce emissions and improve fuel economy. The heated
oxygen sensor monitors the composition of the exhaust gases leaving the engine. The exhaust gas
analysis is fed into an electronic module which continuously influences the amount of fuel injected. This
adjusts the air-fuel ratio to provide optimum conditions for combustion and efficient reduction of the
three major pollutants (hydrocarbons, carbon monoxide, and nitrogen oxides) through a three-way
catalytic converter.
pg. 79 Servicing (cont.)
file:///K|/ownersdocs/1993/1993_240/93240_77.html (2 of 5)12/30/2006 9:42:13 AM
