torque VOLVO V90 1998 Owners Manual

1998 Volvo S90
extreme operating conditions such as trailer
towing in sustained ambient temperatures over
104° F (40° C). However, SAE 10W-30 synthetic
oil would be a better alternative in such
conditions.
SAE 15W-40 should not be used under normal
operating conditions.
American Petroleum Institute
(API) labels. These labels certify
the oil conforms to the applicable
standards and specifications of
the API.
Servicing pg. 110
Torque exhaust and
intake manifold nuts


A loose manifold could alter air/
fuel ratio and cause an increase
in emissions and/or poor
driveability.

Air cleaner

Replace the air cleaner cartridge
with a new one every 30,000
miles (48,000 km). The
cartridge should be replaced
more often when driving under
dirty and dusty conditions, The
filter cannot be cleaned and,
therefore, should always be
replaced with a new one.

Vacuum fittings, hoses
and connections


Unstable idle, misfiring, or poor
emission control is often caused
by leaking vacuum hoses or
connections. Check hoses and
connections on distributor
vacuum unit, connections on
heater control servo systems and
hydraulic brake servo.
Fuel system cap, tank
and lines, and
connections


The effectiveness of the fuel
system to contain hydrocarbons
is dependent largely on a
leakfree 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 and repair if necessary.

Fuel (line) filter

The fuel line filter is located
next to the fuel pump. This filter
should be replaced every
100,000 miles (160,000 km).
The filter is replaced as one
complete unit.
Replace more frequently if
contaminated fuel is introduced
into the tank (or if there is
reason to suspect that this has
occurred).

Timing belt

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:
l Replacing distributor
ignition components e.g.
plugs, coil, etc.
l 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
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1998 Volvo S90

Idle air control system

Your Volvo is equipped with an
electronically-controlled idle air
control system that requires no
checking or adjustment.
Volvo recommends that the
timing belt be replaced every
70,000 miles (112,000 km).

PCV system

The orifice nipple in the intake
manifold and the filter at the
end of the PCV hose in the
aircleaner should be inspected
every 60,000 miles (96,000 km).
Check/replace rubber hoses at
the same time.
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.
Battery maintenance pg. 111
Battery maintenance

Driving habits and conditions, climate, the
number of starts, etc. all affect the service life and
function of the battery. In order for your battery to
perform satisfactorily, keep the following in mind:
l Check the fluid level in the battery every 6
months or every 10,000 * miles (16,000 km).
The fluid level in each battery cell should be
checked - use a screw driver to open the caps and
a flashlight to inspect the level.
*More frequently in warm climates.
l If necessary, add distilled water to
approximately 0.4 in. (10 mm) above the plates in
the cell or to the level indicator. See the
illustrations above.
l Check that the battery cables are correctly
connected and properly tightened.
l Never disconnect the battery when the engine is
running, for example when changing the battery.
l The battery should be disconnected when a
boost charger is used.
l Switch off the radio before disconnecting the
battery. If your radio has an antitheft code and the
battery is disconnected, the radio code has to be
reentered in order for the radio to function.
Fuel/emissions systems pg. 112
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1998 Volvo S90
Engine

Liquid-cooled, gasoline, 6-
cylinder, in-line engine.
Aluminum alloy cylinder
block with cast-iron cylinder
liners cast directly into block.
Aluminum alloy cylinder head
with double overhead
camshafts and separate intake
and outlet channels.
Engine lubrication is provided
by an eccentric pump driven
from the crankshaft. Full-flow
type oil filter. Exhaust
emission control
accomplished by fuel
injection, heated oxygen
sensors and three-way
catalytic converter.
Type designation

Output (SAE J 1349)

Max. torque (SAE J 1349) at
rpm
Number of cylinders
Bore
Stroke
Displacement
Compression ratio
Valve clearance:Volvo B 6304 S

181 hp at 5200 rpm
(135 kW at 73 rps)
199 ft. lbs. (274 Nm) at 4100
rpm
6
3.27" (83 mm)
3.54" (90 mm)
2.92 liters
10.7:1
Self-adjusting


All specifications are subject
to change without notice.
Specifications (cont.) pg. 124
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1998 Volvo S90
Cooling System

Type: Positive pressure, closed system
Thermostat-begins to open at 186°F (87°C)

Coolant: Volvo Genuine Coolant/Anti-freeze

Capacity: 10.5 qts (10 liters)

Fuel system

The engine is equipped with a multiport fuel injection system

Distributor ignition System

Firing order / 1-5-3-6-2-4 Distributor ignition setting / Not adjustable\

Spark plugs / Bosch FR 6 DC (or equivalent)
Spark plug gap / 0.024-0.028" (0.6-0.7 mm)
Tightening torque / 17.3-20.3 ft. lbs. (23-27 Nm)




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