1998 VOLVO S90 climate control

1998 Volvo S90
lock, the cruise control will
disengage automatically.
Heating, ventilation and air conditioning pg. 25


ECC - Electronic Climate Control

This is an automatic system that also permits
manual operation. The in-car temperature is
automatically monitored by two sensors located in
the passenger compartment.
One sensor is located on the top of the dashboard
where it can sense sunlight. The second sensor is
located on the courtesy light fixture where it can
sense the temperature in the center of the car. The
following pages describe how ECC works and
how it can be used most effectively.

Refrigerant

Volvo cares about the environment. The air
conditioning system in your car contains a CFC-
free refrigerant - R134a. This substance will not
deplete the ozone layer. The system contains 2 lbs
(0.9 kg) R134a and uses Sanden SP-20 (type
PAG) oil.

Air vents (dash)

A Open
B Closed
C Directing air flow horizontally
D Directing air flow vertically

NOTE:All maintenance on the climate control
systems should be carried out by an authorized
Volvo service technician only.
Heating, ventilation and air conditioning (cont.) pg. 26
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1998 Volvo S90
ECC - Electronic Climate Control panelBlower
0= off
5= max speed
aut = blower speed
automatically
regulated Function
selector
Set desired
function
aut = normal
settingTemperature dial
Set desired
temperature
Function selector
AUT =Air distribution
automatically regulated


Air through panel
vents

Defrost. Air to
windshield and side
windows.

Air to floor,
windshield and side
windows.

Air through floor
vents.

Bi-level. Air through
floor and panel vents. Air
supplied from panel vents is
slightly colder than air
released at foot level.
Air in the passenger
compartment recirculates with
this button depressed. Will not
function in defrost setting. Light
is on when recirculation is
active* The air conditioning
system is ON when this button is
depressed (the light will be on). The
light has two functions:
l air conditioning *
l fault in system (see next page)
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1998 Volvo S90
recommended on the tire information label*
located on the rear facing side on the right front
door. This label lists both tire and vehicle design
limits. Do not load your car beyond the load limits
indicated.

*Please note that the tire information label
indicates pressures for both comfort and fuel
economy.
Wheels and tires (cont.) pg. 75
Uniform tire quality grading

ALL PASSENGER CAR TIRES MUST
CONFORM TO FEDERAL SAFETY
REQUIREMENTS IN ADDITION TO THESE
GRADES

TREADWEAR
The treadwear grade is a comparative rating based
on the wear rate of the tire when tested under
controlled conditions on a specified government
test course. For example, a tire graded at 150
would wear one and one half (1 1/2) times as well
on the government course as a tire graded 100.
The relative performance of tires depends upon
the actual conditions of their use, however, and
many depart significantly from the norm due to
variation in driving habits, service practices and
differences in road characteristics and climate.

TRACTION
The traction grades, from highest to lowest, are
AA, A, B, and C, as measured under controlled
conditions on specified government test surfaces
of asphalt and concrete. A tire marked C may
have poor traction performance. TEMPERATURE
The temperature grades are AA (the highest), A,
B, and C, representing the tire's resistance to the
generation of heat and its ability to dissipate heat
when tested under controlled conditions on a
specified indoor laboratory test wheel. Sustained
high temperature can cause the material of the tire
to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure. The
grade C corresponds to a level of performance
which all passenger car tires must meet under the
Federal Motor Safety Standard No. 109. Grades B
and A represent higher levels of performance on
the laboratory test wheel than the minimum
required by law.

WARNING!The temperature grade for this
tire is established for a tire that is properly
inflated and not overloaded. Excessive speed,
underinflation, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.
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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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