Acura RL 2004 3.5 Owner's Manual

Place the new air cleaner element
in the air cleaner housing.
Reinstall the air cleaner housing
cover, snap the four hold-down
clamps back into place.
Remove the old air cleaner
element. Remove the air cleaner housing
cover. Do not disconnect the air
intake tube from the air cleaner
housing cover.
Unsnap the f our clamps holding
the air cleaner housing cover.
To replace it: The air cleaner element is inside the
air cleaner housing on the passenger’s
side of the engine compartment.
Caref ully clean the inside of the
air cleaner housing with a damp
rag.
1. 2.
3.
4.5.
6.
A ir Cleaner Element
Maint enance
Replacement
268
CLAMPS
AIR CLEANER
ELEMENT

Clean off any dirt and oil that have
collected around the ignition coils. Remove the two bolts and the f our
nuts with a wrench and remove
the tower bar. Then remove the
A/C tube f rom the three clips.
Remove the two bolts and the
three nuts with a 7/16 inch (10
mm) wrench, then remove the
engine cover.
The spark plugs in your car are a
special platinum-tipped design f or
longer lif e. The spark plugs should
be replaced according to the time
and distance recommendations in
the maintenance schedule.
1.2.
3.
CONT INUED
Replacement
Spark Plugs
Maint enance269
NUTS
BOLTS NUTS
BOLTS
NUTS

Put the new spark plug into the
socket, then screw it into the hole.
Screw it in by hand so you do not
crossthread it.
Use a wrench to remove the two
bolts holding the ignition coil.
Remove the ignition coil by pulling
it straight out.
Remove the spark plug with
a f ive-eighths inch (16 mm) spark
plug socket.
Disconnect the wire connector
f rom the ignition coil by pushing
on the lock tab and pulling on the
connector. Pull on the plastic
connector, not the wires.
4.
5.
6.7.
Spark Plugs
Maint enance270
IGNITION COIL CONNECTOR
LOCK TAB BOLTS
IGNITION COIL

Install the ignition coil. Reinstall
the two hold-down bolts.
Repeat this procedure f or the
other f ive spark plugs.
Torque the spark plug. (If you do
not have a torque wrench, tighten
the spark plug two-thirds of a turn
af ter it contacts the cylinder head.)
Tightening torque: Put the A/C tube back in place.
Install the tower bar and tighten
the two bolts and the f our nuts.
Tightening torque:
Push the wire connector onto the
ignition coil. Make sure it locks in
place. Install the engine cover. First
tighten the two bolts on the front
of the engine cover, then tighten
the three nuts on the engine cover.
Tightening torque:
8. 9.
10.
11. 12.
13.
14.
CONT INUED
Spark Plugs
Maint enance271
13 lbf·ft (18 N·m , 1.8 kgf·m) 16 lbf·ft (22 N·m , 2.2 kgf·m)
7 lbf·ft (9.8 N·m , 1.0 kgf·m)
Tighten the spark plugs caref ully. A
spark plug that is too loose can
overheat and damage the engine.
Overtightening can cause damage to
the threads in the cylinder head.

´
µSpark Plug Gap:Check the battery condition by
looking at the test indicator window
on the battery. The label on the
battery explains the test indicator’s
colors.
Check the condition of your car’s
battery monthly. You should check
the color of the test indicator window,
and f or corrosion on the terminals.
NGK:
DENSO: Battery
Specif ications:
Spark Plugs, Battery
Maint enance272
TEST INDICATOR WINDOW
0.04 in (1.1 mm) PFR5L-11
PK16PR-L110
0.1 mm

µ
Check the battery terminals for
corrosion (a white or yellowish
powder). To remove it, cover the
terminals with a solution of baking
soda and water. It will bubble up and
turn brown. When this stops, wash it
of f with plain water. Dry of f the
battery with a cloth or paper towel.
Coat the terminals with grease to
help prevent f uture corrosion.
If the terminals are severely cor-
roded, clean them with baking soda
and water. Then use a wrench to
loosen and remove the cables f rom
the terminals. Always disconnect the
negative ( ) cable f irst and recon-
nect it last. Clean the battery termi-
nals with a terminal cleaning tool or
wire brush. Reconnect and tighten
the cables, then coat the terminals
with grease.
Battery posts,
terminals, and related accessories
contain lead and lead compounds. If you need to connect the battery to
a charger, disconnect both cables to
prevent damage to the vehicle’s
electrical system.
CONT INUED
Battery
Maint enance
WARNING:
Wash hands af ter handling.
273
The battery gives off explosive
hydrogen gas during normal
operation.
A spark or flame can cause the
battery to explode with enough
force to kill or seriously hurt you.
Wear protective clothing and a
face shield, or have a skilled
mechanic do the battery
maintenance.

Make sure the climate control sys-
tem is off.
Start the engine and let it run until
it warms up (the radiator cooling
fan comes on at least twice), and
let it idle f or f ive more minutes.
If your car’s battery is disconnected
or goes dead, the engine’s computer
needs to ‘‘relearn’’ the idle control.
Af ter replacing or recharging the
battery:
Your driver’s power window (see
page ) and your audio system
will also disable itself when the bat-
tery is disconnected or goes dead.
Thenexttimeyouturnontheradio
you will see ‘‘ ’’ in the f requency
display. Use the Preset buttons to en-
ter the f ive-digit code (see page ).If your car’s battery is disconnected
or goes dead, all stored driving
positions will be lost. To store the
driving positions again, see the
storingprocedureonpage .
The Navigation System will also
disableitself.Thenexttimeyouturn
on the ignition switch, the system
will require you to enter a PIN
bef ore it can be used. Ref er to the
Navigation System Owner’s Manual.
1.
2. 103
98
180On cars with Navigation System
Battery
Maint enance274
Charging the battery with the cables
connected can seriously damage your
car’s electronic controls. Detach the
battery cables bef ore connecting the
battery to a charger.

µ
Check the condition of the wiper
blades at least every six months.
Look f or signs of cracking in the
rubber, or areas that are getting
hard. Replace the blades if you f ind
these signs, or if they leave streaks
and unwiped areas when used.
To replace the blade:Turn the ignition ON (II), switch
the wipers to INT or (low
position), then turn the ignition
OFF when the wiper arm is
approximately midway in its travel. Disconnect the blade assembly
fromthewiperarmbypushingin
the lock tab. Hold the lock tab in
while you push the blade assembly
toward the base of the arm.
2.
1.
CONT INUED
Wiper Blades
Maint enance275
WIPER ARMS LOCK
TAB

Remove the blade f rom its holder
by grasping the tabbed end of the
blade. Pull f irmly until the tabs
come out of the holder.Examine the new wiper blades. If
they have no plastic or metal rein-
f orcement along the back edge,
remove the metal reinf orcement
strips f rom the old wiper blade and
install them in the slots along the
edge of the new blade.Slide the new wiper blade into the
holder until the tabs lock.
Slide the wiper blade assembly
onto the wiper arm. Make sure it
locks in place.
Turn the ignition switch ON (II)
andreturnthewindshieldwipers
to their park position.
3. 4. 5.
6.
7.
Wiper Blades
Maint enance276
BLADE
BLADE
REINFORCEMENT

Run the air conditioning at least once
a week during the cold weather
months. Run it f or at least ten
minutes while you are driving at a
steady speed with the engine at
normal operating temperature. This
circulates the lubricating oil con-
tained in the ref rigerant.If the air conditioning does not get as
cold as before, have your dealer
check the system. Recharge the
system with Ref rigerant HFC-134a
(R-134a). (See Specif ications on page
.)
Periodically check the engine’s
radiator and air conditioning
condenser f or leaves, insects, and
dirt stuck to the f ront surf ace. These
block the air f low and reduce cooling
ef f iciency. Use a light spray f rom a
hose or a sof t brush to remove them. Your car’s air conditioning is a sealed
system. Any major maintenance,
such as recharging, should be done
by a qualif ied mechanic. You can do
a couple of things to make sure the
air conditioning works ef f iciently. 338
A ir Condit ioning Syst em
Maint enance277
AIR CONDITIONING CONDENSER
Whenever you have the air conditioning
system serviced, make sure the service
f acility uses a ref rigerant recycling
system. This system captures the
ref rigerant f or reuse. Releasing
ref rigerant into the atmosphere can
damage the environment.
The condenser and radiator f ins bend
easily. Only use a low-pressure spray
or sof t-bristle brush to clean them.