CO(H4DOTC)-2
General Description
COOLING
1. General Description
A: SPECIFICATION
Cooling system
Electric fan + Forced engine coolant
circulation system
Total engine coolant capacity
2
(US qt, Imp qt)
AT model: Approx. 7.4 (7.8, 6.5)
MT model: Approx. 7.5 (7.9, 6.6)
Water pump
Type
Centrifugal impeller type
Discharge
performance I
Discharge rate
2
(US gal, Imp gal) /min.
20 (5.3, 4.4)
Pump speed — Discharge pressure
760 rpm — 2.9 kPa (0.3 mAq)
Engine coolant temperature
80°C (176°F)
Discharge
performance II
Discharge rate
2
(US gal, Imp gal) /min.
100 (26.4, 22.0)
Pump speed — Discharge pressure
3,000 rpm — 49.0 kPa (5.0 mAq)
Engine coolant temperature
80°C (176°F)
Discharge
performance III
Discharge rate
2
(US gal, Imp gal) /min.
200 (52.8, 44.0)
Pump speed — Discharge pressure
6,000 rpm — 225.4 kPa (23.0 mAq)
Engine coolant temperature
80°C (176°F)
Impeller diameter
mm (in)
76 (2.99)
Number of impeller vanes
8
Pump pulley diameter
mm (in)
60 (2.36)
Clearance
between
impeller and
case
Standard
mm (in)
0.5 — 1.5 (0.020 — 0.059)
Thermostat
Type
Wax pellet type
Starting temperature to open
76 — 80°C (169 — 176°F)
Fully opens
91°C (196°F)
Valve lift
mm (in)
9.0 (0.354) or more
Valve bore
mm (in)
35 (1.38)
Radiator fan
Motor input
Main fan
W
120
Sub fan
W
120
Fan diameter /
Blade
Main fan
318.5 mm (12.54 in)/9
Sub fan
318.5 mm (12.54 in)/11
Radiator
Type
Down flow
Core
dimensions
Width × Height × Thickness
mm (in) 687.4 × 340 × 16 (27.06 × 13.39 × 0.63)
Pressure range
in which cap
valve is open
Coolant filler tank side
kPa (kg/cm
2
, psi)
Above: 108
r
14.7
(1.1
r
0.15, 16
r
2.1)
Below: –1.0 — –4.9
(–0.01 — –0.05, –0.1 — –0.7)
Radiator side
kPa (kg/cm
2
, psi)
Above only: 137
r
14.7
(1.40
r
0.15, 20
r
2.1)
Fins
Corrugated fin type
Reservoir
tank
Capacity
2
(US qt, Imp qt)
0.45 (0.48, 0.40)
Recommended
materials
Item
number
Alternative
Coolant
SUBARU SUPER COOLANT
(Concentrated type)
—
—
SUBARU SUPER COOLANT
(Diluted type)
K0670Y0000
Water for dilution
Distilled water
—
Soft water or tap water
Cooling system protective agent
Cooling system conditioner
SOA345001
—
Summary of Contents for 2009 IMPREZA
Page 18: ...PC 4 Precaution PRECAUTION...
Page 21: ...NT 4 Note NOTE Lift Rigid rack A Attachment NT 00241 A A Attachment NT 00242 A...
Page 23: ...NT 6 Note NOTE A Front B Rear 1 Front crossmember 2 Rear differential 1 2 A B NT 00210...
Page 66: ...PI 22 Pre delivery Inspection PRE DELIVERY INSPECTION...
Page 112: ...PM 48 A C Filter PERIODIC MAINTENANCE SERVICES...
Page 219: ...IN H4SO 10 Resonator Chamber INTAKE INDUCTION...
Page 324: ...ME H4SO 106 Engine Noise MECHANICAL...
Page 388: ...SP H4SO 6 Accelerator Pedal SPEED CONTROL SYSTEMS...
Page 395: ...IG H4SO 8 Spark Plug Cord IGNITION...
Page 418: ...SC H4SO 24 Battery STARTING CHARGING SYSTEMS...
Page 725: ...EN H4SO diag 308 General Diagnostic Table ENGINE DIAGNOSTICS...
Page 926: ...GD H4SO 202 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION...
Page 1181: ...EX H4DOTC 16 Muffler EXHAUST...
Page 1212: ...CO H4DOTC 32 Engine Cooling System Trouble in General COOLING...
Page 1221: ...IG H4DOTC 8 Ignition Coil IGNITION...
Page 1818: ...GD H4DOTC 230 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION...
Page 2154: ...5MT 82 General Diagnostic Table MANUAL TRANSMISSION AND DIFFERENTIAL...
Page 2227: ...RS 20 General Diagnostic Table REAR SUSPENSION...
Page 2364: ...DS 36 General Diagnostic Table DRIVE SHAFT SYSTEM...
Page 2615: ...BR 48 General Diagnostic Table BRAKE...
Page 2624: ...PB 10 General Diagnostic Table PARKING BRAKE...
Page 2681: ...PS 58 General Diagnostic Table POWER ASSISTED SYSTEM POWER STEERING...
Page 2730: ...AC 50 General Diagnostic Table HVAC SYSTEM HEATER VENTILATOR AND A C...
Page 2961: ...SB 22 Rear Seat Belt SEAT BELT SYSTEM...
Page 3035: ...COM 6 Horn Switch COMMUNICATION SYSTEM...
Page 3070: ...GW 36 Wiper Deicer System GLASS WINDOWS MIRRORS...
Page 3092: ...IDI 22 Clock INSTRUMENTATION DRIVER INFO...
Page 3158: ...SL 54 Immobilizer Antenna SECURITY AND LOCKS...
Page 3167: ...SR 10 Sunshade SUNROOF T TOP CONVERTIBLE TOP SUNROOF...
Page 3240: ...EI 74 Ornament EXTERIOR INTERIOR TRIM...
Page 3286: ...CC 12 Neutral Position Switch CRUISE CONTROL SYSTEM...
Page 3311: ...CC diag 26 Diagnostic Procedure with Cancel Code CRUISE CONTROL SYSTEM DIAGNOSTICS...
Page 3421: ...LAN diag 88 General Diagnostic Table LAN SYSTEM DIAGNOSTICS...
Page 3486: ...WI 67 Remote Engine Start System WIRING SYSTEM...