2005 SUBARU IMPREZA WRX engine

11 -4 3
Maintenance and service
– CONTINUED –
Brake pedal
Check the brake pedal free play and reserve distance
according to the maintenance schedule in the “War-
ranty and Maintenance Booklet”. „Checking the brake pedal free play
1) 0.04 – 0.12 in (1.0 – 3.0 mm)
Stop the engine and firmly depress the brake pedal
several times. Lightly press the brake pedal down with
one finger to check the free play with a force of less
than 2 lbs (10 N, 1 kg).
If the free play is not within proper specification, con- tact your SUBARU dealer. „
Checking the brake pedal reserve dis-
tance
1) More than 2.56 in (65 mm)
Depress the pedal with a force of approximately 66 lbs
(294 N, 30 kg) and measure the distance between the
upper surface of the pedal pad and the floor.
When the measurement is smaller than the specifica-
tion, or when the pedal does not operate smoothly,
contact with your SUBARU dealer.
1
HSB049BB
1
HSB050BB

11 - 4 4
Maintenance and service
Clutch pedal (MT vehicles)
Check the clutch pedal free play and reserve distance
according to the maintenance schedule in the “War-
ranty and Maintenance Booklet”. „
Checking the clutch function
Check the clutch engagement and disengagement.
1. With the engine idling, check that there are no ab-
normal noises when the clutch pedal is depressed,
and that shifting into 1st or reverse feels smooth.
2. Start the vehicle by releasing the pedal slowly to
check that the engine and transmission smoothly cou-
ple without any sign of slippage. „
Checking the clutch pedal free play
1) 0.16 – 0.51 in (4.0 –13.0 mm)
Lightly press the clutch pedal down with your finger
until you feel resistance, and check the free play.
If the free play is not within proper specification, con-
tact your SUBARU dealer.
1
HSB049BB

11 - 5 6
Maintenance and service
Windshield washer fluid
Check the level of the washer fluid at each fuel stop. If
the level is low, fill the fluid up to the neck of the reser- voir.
Use windshield washer fluid. If windshield washer fluid
is unavailable use clean water.
In areas where water freezes in winter, use an anti-
freeze type windshield washer fluid. SUBARU Wind-
shield Washer Fluid contains 58.5% methyl alcohol
and 41.5% surfactant, by volume. Its freezing temper-
ature varies according to how much it is diluted, as in-
dicated in the following table.
Never use engine coolant as washer fluid be-
cause it could cause paint damage.
UGB134HA
Washer Fluid Concentration Freezing Temperature
30% 10.4 °F (–12 °C)
50% –4 °F (–20 °C)
100% –49 °F (–45 °C)

11 - 6 6
Maintenance and service
The other one is housed in the engine compartment.
1) Fuse puller
2) Spare fuse
The fuse puller and spare fuses are stored in the main
fuse box cover in the engine compartment.
HSB065BA
1
2
HSB066BB

12-1
12
Specifications
Specifications ................................................ 12-2 Dimensions ....................................................... 12-2
Engine ................................................................ 12-3
Electrical system .............................................. 12-3
Capacities .......................................................... 12-4
Tires ................................................................... 12-5
Wheel alignment ............................................... 12-6
Fuses and circuits ........................................ 12-7 Fuse panel located behind the coin tray ....... 12-7
Fuse panel located in the engine compartment .................................................. 12-9
Bulb chart ...................................................... 12-10
Vehicle identification .................................... 12-11

12-3
Specifications
– CONTINUED –
„Engine
„ Electrical system
AT: Automatic transmission
MT: Manual transmission
Engine modelEJ253
(2.5-liter, SOHC, non-turbo)EJ205 (2.0-liter, DOHC, turbo)EJ257 (2.5-liter, DOHC, turbo)
Engine typeHorizontally opposed, liquid cooled 4 cylinder, 4-stroke gasoline engine
Displacement cc (cu-in)2,457 (150)1,994 (122)2,457 (150)
Bore × Stroke in (mm)3.9 × 3.1 (99.5 × 79.0)3.6 × 2.9 (92.0 × 75.0)3.9 × 3.1 (99.5 × 79.0)
Compression ratio10.0 : 18.0 : 18.2 : 1
Firing order1 – 3 – 2 – 4
Battery type and
capacity (5HR)MT12V-48AH (55D23L)
ATWith 2.5-liter non-turbo engine12V-52AH (75D23L)
With 2.0-liter turbo engine12V-52AH (65D23L)
Alternator2.5-liter non-turbo and
2.0-liter turbo engine12V-75A
2.5-liter turbo engine12V-90A
Spark plugs2.5-liter non-turbo engineFR5AP-11
2.0-liter turbo enginePFR6G (NGK)
2.5-liter turbo engineIFLR6B (NGK)

12-4
Specifications „
Capacities
AT: Automatic transmission
MT: Manual transmission
Fuel tank15.9 US gal (60 liters, 13.2 Imp gal)
Engine oil4.2 US qt (4.0 liters, 3.5 Imp qt)
Transmission oil (MT)5 speed3.7 US qt (3.5 liters, 3.1 Imp qt)
6 speed4.3 US qt (4.1 liters, 3.6 Imp qt)
Transmission oil (AT)10.0 US qt (9.5 liters, 8.4 Imp qt)
Power steering gear fluid0.7 US qt (0.7 liter, 0.6 Imp qt)
Engine coolant2.5-liter non-turbo engineMT7.4 US qt (7.0 liters, 6.2 Imp qt)
AT7.3 US qt (6.9 liters, 6.1 Imp qt)
2.0-liter turbo engineMT8.1 US qt (7.7 liters, 6.8 Imp qt)
AT8.0 US qt (7.6 liters, 6.7 Imp qt)
2.5-liter turbo engineMT8.1 US qt (7.7 liters, 6.8 Imp qt)

12-7
Specifications
– CONTINUED –
Fuses and circuits „Fuse panel located behind the coin tray
1
23456
78 9101112
13 14 15
16 17 18 19
20 21 22 23
HSC001BB
Fuse panelFuse ratingCircuit
115AyHeater fan
215AyHeater fan
315AyPower door lock
y Remote keyless entry
420AyCigarette lighter
y Remote controlled rear
view mirrors
510AyTail light
y Parking light
615AySRS airbag
715AyFog light
820AyABS solenoid
915AyRadio
10Empty
1115AyEngine ignition system
y SRS airbag
y AT control system