1996 VOLVO 850 gas type

1996 Volvo 850

Unstable idle, misfiring, or poor emission control is often caused by le\
aking vacuum hoses or
connections. Check all vacuum hoses and connections.

Checking and adjusting idle air control system

Your Volvo is equipped with an electronically controlled idle air contro\
l system that requires no
checking or adjustment.

Timing belt

For proper functioning of the vehicle and its emission control systems, \
Volvo recommends that the
timing belt be replaced every 70,000 miles (112,000 km).

Fuel system cap, tank and lines and connections

The effectiveness of the fuel system to contain hydrocarbons is dependen\
t largely on a leak-free system.
Check for proper sealing of the gasoline filler cap which contains "O" r\
ing type seals.

Fuel (line) filter

The fuel line filter is located next to the fuel pump. For proper functi\
oning of the vehicle and its
emission control systems, the fuel line filter should be replaced at 100\
,000 miles (160,000 km). The
filter is replaced as one complete unit. Replace more frequently if cont\
aminated fuel is introduced into
the tank (or if there is reason to suspect that this has occurred).

Charge air cooler (Intercooler)

The B 5234 Turbo engine employs a turbo-compressor to force air into the\
engine inlet manifold and a
charge air cooler to cool the compressed inlet air. The resulting increa\
se in air flow raises pressure in the
intake manifold by approx. 8.7 psi (over atmospheric pressure) and eng\
ine power output by approx. 50
horsepower over that developed by the normally-aspirated engine. The cha\
rge air cooler (which
resembles a radiator) is located between the turbo-compressor and inlet\
manifold.
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1996 Volvo 850
Engine

Liquid-cooled gasoline, 5-cylinder, in-line engine. Aluminum alloy cylin\
der block with cast-iron
cylinder liners cast directly into block. Aluminum alloy cylinder head w\
ith double overhead camshafts
and separate intake and outlet channels.
Engine lubrication is provided by an eccentric pump driven from the cran\
kshaft. Full-flow type oil filter.
Exhaust emission control accomplished by fuel injection, heated oxygen s\
ensor(s) and three-way
catalytic converter
Designation Volvo B 5252 S Volvo B 5234
850 R Turbo Volvo B 5254 S Volvo B 5234 T
Turbo
Output 142 hp at 5400
rpm (106 kw/90
rps) 222 hp at 5280
rpm* (166 km/88
rps)* 168 hp at 6200
rpm (125 kw 103
rps) 222 hp at 5280
rpm (166 km/88
rps)
Max torque 152 lbs. at 3600
rpm (206 Nm/60
rps) 221 ft. lbs. at 2000-
5280 rpm (300
Nm/33-88 rps)* 162.3 ft. lbs. at
4700 rpm (220
Nm/55 rps) 221 ft. lbs. at 2000-
5280 rpm (300
Nm/33-88 rps)
Number of
cylinders 5
5 5 5
Bore 3.27" (83 mm) 3.19" (81 mm) 3.27" (83 mm) 3.19" (81 mm)
Stroke 3.54" (90 mm) 3.54" (90 mm) 3.54" (90 mm) 3.54" (90 mm)
Displacement 2.4 liters 2.3 liters 2.4 liters 2.3 liters
Compression ratio 10.0:1 8.5:1 10.5:1 8.5:1
Number of valves 10 20 20 20
Valve clearance Self-adjusting Self-adjusting Self-adjusting Self-adjusting

* The 850 R turbo engine generates increased power on cars equipped with\
an automatic transmission
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