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owners manual Volvo 940
owners manual Volvo 940 - year of production: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 - Volvo 940 owners manual EN
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from owners manual to the vehicle Volvo 940, year of production 1990 - 1998:
1994 Volvo 940
Check/replace hoses at the same time.
Exhaust Gas Recirculation (EGR)
This system operates by returning some of the exhaust gases to the engine to be recombusted: since this
lowers the combustion temperature the amount of nitrogen oxides released into the atmosphere is
reduced.
The EGR valve should be cleaned at 100,000 miles (160,000 km) and thereafter cleaned every 20,000
miles (32,000 km).
* B 230 FD/B 230 FT with EGR only: clean at 100,000 miles (160,000 km).
pg. 8:11 Servicing
WARNING!
The distributor ignition system operates at very high voltages. Special safety precautions must be
followed to prevent injury.
Always turn the ignition off when:
● connecting engine test and diagnostic equipment to the vehicle (timing light, tach-dwell tester,
ignition oscilloscope, etc).
● Replacing distributor ignition components e.g. plugs, coil, distributor, HT leads etc.
● Do not touch any part of the distributor ignition system while the engine is running. This may result
in unintended movements and body injury.
Replacing spark plugs
The spark plugs should be changed every 30,000 miles (48,000 km). However, city driving or fast
highway driving may necessitate changing after 15,000 miles (24,000 km) of driving. When installing
new plugs, be sure to fit the right type and use correct torque, see Specifications. When changing the
plugs, check that the suppressor connectors are in good condition. Cracked or damaged connectors
should be replaced. When changing the spark plugs, clean the terminals and the rubber seals.
CAUTION: Do not use silicone-based lubricants, which can have adverse effects on electrical
components.
Battery:
● Make sure the battery leads are properly connected and tightened.
● Never disconnect the battery when the engine is running.
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Volvo 940 owners manual
pages 184 - 190
Volvo 940 owners manual
page 187 / 202
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