Daewoo Matiz (2003 year). Manual - part 11

1D – 14 ENGINE COOLING

MAA1D020

4. Remove the thermostat.

D

Remove the bolts.

D

Remove the thermostat housing.

D

Remove the thermostat with the gasket.

5. Check the gasket for crack or other damage.

6. Inspect the valve seat for foreign matter that could

prevent the valve from seating properly.

7. Inspect the thermostat for proper operation. Refer to

“Thermostat Test” in this section.

MAA1D011

Installation Procedure

1. Install the thermostat with the bolts and the thermo-

stat housing.

Tighten

Tighten the mounting bolts to 8–15 N

S

m (71–130

lb-in).

2. Secure the upper radiator hose to the thermostat

housing with a hose clamp.

3. Refill the engine cooling system. Refer to “Draining

and Refilling the Cooling System” in this section.

4. Install the air filter assembly. Refer to Section 1B,

SOHC Engine Mechanical.

D102D515

COOLANT TEMPERATURE SENSOR

Removal Procedure

1. Disconnect the negative battery cable.

2. Disconnect the lower radiator hose and drain the

coolant. Refer to “Draining and Refilling the Cooling
System” in this section.

3. Remove the coolant temperature sensor.

D

Disconnect the electrical connector (1).

D

Remove the coolant temperature sensor (2).

D12D516A

10 N

S

m

Installation Procedure

1. Install the coolant temperature sensor into the

threaded hole in the intake manifold.

Tighten

Tighten the coolant temperature sensor to 10 N

S

m

(89 lb-in).

D

Connect the electrical connector to the coolant
temperature sensor (1).

2. Connect the lower radiator hose and refill the coolant.

Refer to “Draining and refilling the cooling system” in
this section.

3. Connect the negative battery cable.

ENGINE COOLING 1D – 15

D102D517

ENGINE COOLANT TEMPERATURE
SENSOR

Removal Procedure

1. Disconnect the negative battery cable.

2. Disconnect the lower radiator hose and drain the

coolant “Draining and Refilling the Cooling System” in
this section.

3. Remove the engine coolant temperature (ECT) sen-

sor.

D

Disconnect the electrical connector (1).

D

Remove the ECT sensor (2).

D12D518A

20 N

S

m

Installation Procedure

1. Install the ECT sensor.

Tighten

Tighten the ECT sensor to 20 N

S

m (15 lb-ft).

D

Connect the electrical connector to the ECT sen-
sor (1).

2. Connect the lower radiator hose and refill the coolant.

Refer to “Draining and Refilling the Cooling System”
in this section.

3. Connect the negative battery cable.

D102B533

COOLANT PUMP

Removal Procedure

1. Disconnect the negative battery cable.

2. Disconnect the lower radiator hose and drain the

coolant. Refer to “Draining and Refilling the Cooling
System” in this section.

3. Remove the timing belt. Refer to Section 1B, Engine

Mechanical.

4. Remove the rear timing belt cover.

D

Remove the bolts (1).

D

Remove the rear timing belt cover (2).

D102D519

5. Remove the coolant pump.

D

Remove the nuts (1).

D

Remove the bolts (2).

D

Remove the coolant pump (3).

D

Remove the gasket.

Notice: Remove the coolant pump as shown figure (a).

1D – 16 ENGINE COOLING

9–12 N

S

m

9–12 N

S

m

D12D520A

D12D521A

Installation Procedure

1. Install the coolant pump with the new gasket.

Tighten

Tighten the bolts and the nuts to 9–12 N

S

m (80–106

lb-in) (a).

2. Install the rear timing belt cover.

Tighten

Tighten the bolts to 9–12 N

S

m (80–106 lb-in) (b).

3. Install the timing belt. Refer to Section 1B, Engine

Mechanical.

4. Connect the lower radiator hose and drain the cool-

ant. Refer to “Draining and Refilling the Cooling Sys-
tem” in this section.

5. Connect the negative battery cable.

ENGINE COOLING 1D – 17

SPECIFICATIONS

GENERAL SPECIFICATIONS

Application

Description

Unit

Standard

Limit

Cooling
System

Cooling Type

–

Forced Water

Circulation

Coolant

Coolant Capacity

L/qt

3.8/4.00

Thermostat Type

–

Pellet Type

Temperature(opened initially)

°

C(

°

F)

82(180)

Thermostat

Temperature(perfectly opened)

°

C(

°

F)

95(203.4)

Temperature(perfectly closed)

°

C(

°

F)

80(176.4)

Stroke(perfectly opened)

mm(in.)

8 (0.32)

Cooling Fan Type

–

Electric

Blade Number

EA

6

Cooling Fan Diameter

mm(inch)

300(11.8)

Electric Cooling

Temperature At Low Speed ON

°

C(

°

F)

93(199.8)

Fan

Temperature At Low Speed OFF

°

C(

°

F)

90(194.4)

Temperature At High Speed ON

°

C(

°

F)

100(212.4)

Temperature At High Speed OFF

°

C(

°

F)

97(207)

Surge Tank

Open Pressure of The Pressure Valve

kPa (psi)

120–150

(17.4–21.8)

Surge Tank

Open Pressure of The Vacuum Valve

kPa (psi)

10 (1.5)

Water Pump Type

–

Centrifugal

Coolant Pump

Impeller Diameter

mm(in.)

60(2.36)

Impeller Blade Number

EA

7

Radiator Type

–

Cross–Flow

Core Width

mm(in.)

458(18.03)

Radiator

Core Height

mm(in.)

295(11.61)

Core Depth (Standard/Heavy Duty)

mm(in.)

16/27(0.63/1.06)

Resistance
(Coolant Temperature 50

°

C(122.4

°

F))

Ω

185.2

Coolant
Temperature

Resistance
(Coolant Temperature 85

°

C(185.4

°

F))

Ω

49.2

Sensor

Resistance
(Coolant Temperature 105

°

C(221.4

°

F))

Ω

27.5

Engine Coolant

Resistance
(Coolant Temperature 20

°

C(68.4

°

F))

Ω

3,520

Temperature
Sensor

Resistance
(Coolant Temperature 80

°

C(176.4

°

F))

Ω

332