Mitsubishi Eclipse. Manual — part 654

ON-VEHICLE SERVICE

TSB Revision

COOLING SYSTEM

14-19

3. Raise the vehicle at the front with a garage jack.

CAUTION

When removing the radiator cap, use care to avoid contact
with hot coolant or steam. Place a shop towel over the cap
and turn the cap counterclockwise a little to let the pres-
sure escape through the vinyl tube. After relieving the
steam pressure, remove the cap by slowly turning it coun-
terclockwise.
4. Remove the radiator cap, radiator drain plug and if equipped

engine coolant drain plug to drain the coolant.

5. Remove the reserve tank and drain the coolant.
6. After completely draining the coolant, reinstall the drain

plugs and flush the engine and radiator using a radiator
cleaning fluid.

7. After the flushing is completed, completely drain the

cleaning fluid and install the radiator and engine drain plugs.

CAUTION

Do not use alcohol or methanol anti-freeze or any engine
coolants mixed with alcohol or methanol anti-freeze. The
use of an improper anti-freeze can cause corrosion of the
aluminum components.
8. By referring to the section on coolant, select an appropriate

concentration for safe operating temperature within the
range of 30 to 60 %. Use special tool MB991871 to refill the
coolant. A convenient mixture is a 50 % water and 50 %
antifreeze solution [freezing point:

−31°C (−32.8 °F)].

Recommended antifreeze:
MITSUBISHI GENUINE Part NO.MD970389 or equiva-

lent
Quantity:
<2.4L Engine> 7.0 dm

3

(7.4 quarts)

<3.0L Engine> 8.0 dm

3

(8.5 quarts)

9. Reinstall the radiator cap.
10.Start the engine and let it warm up until the thermostat

opens.

11.After repeatedly revving the engine up to 3,000 r/min several

times, then stop the engine.

AC106167

GARAGE JACK

AB

AC000106

DRAIN
PLUG

AB

AC106423AB

MB991871

AIR HOSE

ON-VEHICLE SERVICE

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COOLING SYSTEM

14-20

12.Remove the radiator cap after the engine has become cold,

and pour in coolant up to the brim. Reinstall the cap.

CAUTION

Do not overfill the reserve tank.
13.Add coolant to the reserve tank between the "FULL" and

"LOW" mark if necessary.

ENGINE COOLANT CONCENTRATION TEST

M1141001100192

Refer to GROUP 00, RECOMMENDED LUBRICANTS AND
LUBRICANT CAPACITIES TABLE

P.00-38

.

FAN CONTROLLER CHECK

M1141006100120

1. Remove condenser fan motor connector.
2. Start the engine and run it at idle.
3. Turn the A/C switch to ON and maintain the coolant

temperature at 80

°C (176°F) or less.

4. When measuring the voltage between the fan controller-side

connector terminals, check that the value changes
repeatedly as indicated by (1)

− (3) below.

(1) 0 V
(2) 8.2

± 2.6 V

(3) Battery positive voltage

± 2.6 V

5. If the voltage does not repeatedly change as indicated,

replace the radiator fan motor and the fan controller
assembly.

FAN CONTROL RELAY CONTINUITY CHECK

M1141006200138

AC000274 AC

FAN CONTROLLER

BATTERY
VOLTAGE

TERMINAL NO. TO
BE CONNECTED
TO TESTER

CONTINUITY
TEST RESULTS

Not applied

4

− 2

Open circuit

Connect terminal
No.3 and battery (

−)

terminal.
Connect terminal
No.1 and battery (+)
terminal.

4

− 2

Less than 2 ohm

AC102593

FAN CONTROL RELAY

AB

RADIATOR

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COOLING SYSTEM

14-21

RADIATOR

REMOVAL AND INSTALLATION

M1141001500457

Pre-removal Operation
• Engine Coolant Draining [Refer to GROUP 00, Mainte-

nance Service

− Engine Coolant (Change)

P.00-58

.]

Post-installation Operation
• Transmission Fluid Supplying and Checking (Refer to

GROUP 00, Maintenance Service

− Automatic Transmis-

sion Fluid

P.00-56

.)

• Engine Coolant Supplying [Refer to GROUP 00, Mainte-

nance Service

− Engine Coolant (Change)

P.00-58

.]

AC004073

11

12

13

14

15

8

8

3

5

2

4

9

10

6

7

11 N·m
97 in-lb

11 N·m
97 in-lb

11 N·m
97 in-lb

4.9 N·m
43 in-lb

AD

1

RADIATOR REMOVAL STEPS

1.

RADIATOR CAP

2.

DRAIN PLUG

3.

RUBBER HOSE CONNECTION

4.

RESERVE TANK ASSEMBLY

<<A>> >>A<<

5.

RADIATOR UPPER HOSE

<<A>> >>A<<

6.

RADIATOR LOWER HOSE

<<B>>

7.

A/T OIL COOLER HOSE
CONNECTION

8.

RADIATOR SUPPORT

9.

RADIATOR

10. LOWER INSULATOR
11. CONDENSER FAN MOTOR

ASSEMBLY

12. RADIATOR FAN MOTOR

ASSEMBLY

13. FAN

14. RADIATOR FAN MOTOR
15. SHROUD

RADIATOR FAN MOTOR
ASSEMBLY REMOVAL STEPS

1.

RADIATOR CAP

2.

DRAIN PLUG

<<A>> >>A<<

5.

RADIATOR UPPER HOSE

11. CONDENSER FAN MOTOR

ASSEMBLY

12. RADIATOR FAN MOTOR

ASSEMBLY

13. FAN
14. RADIATOR FAN MOTOR
15. SHROUD

RADIATOR REMOVAL STEPS

RADIATOR

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COOLING SYSTEM

14-22

REMOVAL SERVICE POINTS

.

<<A>> RADIATOR UPPER HOSE/RADIATOR LOWER HOSE
DISCONNECTION
Make mating marks on the radiator hose and the hose clamp.
Disconnect the radiator hose.

.

<<B>> A/T OIL COOLER HOSE REMOVAL
After removing the hose from the radiator, plug the hose and
the radiator nipple to prevent dust or foreign particles from get-
ting in.

INSTALLATION SERVICE POINT

.

>>A<< RADIATOR LOWER HOSE/RADIATOR UPPER HOSE
CONNECTION
1. Insert each hose as far as the projection of the water inlet

fitting.

2. Align the mating marks on the radiator hose and hose

clamp, and then connect the radiator hose.

ACX01828

MATING MARKS

AB

ACX01829AB

PROJECTION

WATER OUTLET
FITTING

MATING
MARKS