2005 MITSUBISHI LANCER check engine

ON-VEHICLE SERVICE
ENGINE COOLING14-25
COOLING FAN MOTOR CHECKM11410071000601. Remove the cooling fan motor connector.
2. Check to see that the cooling fan motor of the
radiator turns when applying battery power
between the connector terminal 1 and 2 of the
cooling fan motor. Also check to see that there is
no abnormal sound coming from the cooling fan
motor at this time.
3. If the cooling fan motor is defective, replace it.
(Refer to P.14-35).
1 2
AC303501AB
Cooling fan motor drive control unit
Cooling fan motor
(L.H.) connector
1 2
AC303502AB
Cooling fan motor
drive control unit
Cooling fan motor
(R.H.) connector
<4G1 with A/C>

THERMOSTAT
ENGINE COOLING14-27
REMOVAL SERVICE POINT
<> RADIATOR LOWER HOSE
DISCONNECTION
Make mating marks on the radiator lower hose and
the hose clamp. Disconnect the radiator lower hose.
INSTALLATION SERVICE POINTS
>>A<< THERMOSTAT INSTALLATION
CAUTION
Make absolutely sure that no oil adheres to the
rubber ring of the thermostat. Also do not fold or
scratch the rubber ring during installation.
Install the thermostat so that the jiggle valve is facing
straight up. Be careful not to fold or scratch the
rubber ring.
>>B<< RADIATOR LOWER HOSE
CONNECTION
1. Insert radiator lower hose as far as the projection
of the Cooling water inlet hose fitting.
2. Align the mating marks on the radiator lower hose
and hose clamp, and then connect the radiator
lower hose.
INSPECTIONM1141002500427
THERMOSTAT CHECK
1. Immerse the thermostat in water, and heat the
water while stirring. Check the thermostat valve
opening temperature.
Standard value:
88 ± 1.5°C <4G1>
82 ± 1.5°C <4G6>
Removal steps
1. Water temperature gauge unit
connector <4G6>
2. Water temperature sensor unit
connector <4G6>
<> >B<<3. Radiator lower hose connection4. Engine control oxygen sensor
connector and connector bracket
<4G1>
5. Control wiring harness clip <4G6>
6. Cooling water inlet hose fitting>>A<<7. ThermostatRemoval steps (Continued)
AC200641AC
Mating marks
AC000279
Jiggle valve
Rubber ring
AB
AC200642
Mating marks
Projection
Cooling water inlet
hse fitting
AH
ACX00400
AB

THERMOSTAT
ENGINE COOLING14-28
2. Check that the amount of valve lift is at the
standard value when the water is at the
full-opening temperature.
NOTE: Measure the valve height when the
thermostat is fully closed, and use this
measurement to compare the valve height when
the thermostat is fully open.
Standard value:
100°C <4G1>
95°C <4G6>
Amount of valve lift: 8.5 mm or more
ACX00401AC
Valve lift

WATER HOSE AND WATER PIPE
ENGINE COOLING14-34
REMOVAL SERVICE POINT
<> RADIATOR UPPER HOSE
DISCONNECTION
After making mating marks on the radiator upper
hose and hose clamp, disconnect the radiator upper
hose.
INSTALLATION SERVICE POINTS
>>A<< COOLING WATER LINE O-RING
INSTALLATION
CAUTION
Do not allow engine oil or other grease to adhere
to the cooling water line O-ring
Insert the cooling water line O-ring to the water pump
water inlet pipe, and coat the outer portion of the
cooling water line O-ring with water or engine
coolant.
>>B<< THERMOSTAT CASE
ASSEMBLY/COOLING WATER OUTLET
HOSE FITTING INSTALLATION
1. Use a gasket scraper or wire brush to completely
eliminate all gasket material on the gasket
mounting surface.
2. Apply a bead of the specified sealant.
Specified Sealant: MITSUBISHI GENUINE
PART No.MD970389 or equivalent
3. With the sealant still wet (within 15 minutes after
the sealant is applied), install the thermostat case
assembly or cooling water outlet hose fitting. Do
not apply the sealant in an area more than the
required.
>>C<< RADIATOR UPPER HOSE
CONNECTION
1. Insert radiator upper hose as far as the projection
of the cooling water outlet hose fitting.
2. Align the mating marks on the radiator upper hose
and hose clamp, and then connect the radiator
upper hose.
INSPECTIONM1141003400296
WATER PUMP INLET PIPE AND
THROTTLE BODY WATER HOSES
CHECK
Check the water pipe and hoses for cracks, damage
and clogs. Replace them if necessary.
AC200641AC
Mating marks
AC200644AC
O-ring
Water inlet pipe
Water pump or thermostat case
AC200642
Mating marks
Projection
Cooling water outlet
hose fitting
AJ
Radiator upper
hose

INLET MANIFOLD
INTAKE AND EXHAUST15-5
INLET MANIFOLD
REMOVAL AND INSTALLATION <4G1>M1151003000749
Pre-removal Operation
•Fuel Line Pressure Reduction (Refer to GROUP 13A -
On-vehicle Service P.13A-389).
•Engine Coolant Draining (Refer to GROUP 14 -
On-vehicle Service P.14-22).
•Strut Tower Bar Removal (Refer to GROUP 42 P.42-9).
•Throttle Body Assembly Removal (Refer to GROUP 13A
P.13A-400).
•Fuel Delivery Pipe and Fuel Injector Assembly Removal
(Refer to GROUP 13A P.13A-398).Post-installation Operation
•Fuel Delivery Pipe and Fuel Injector Assembly Installation
(Refer to GROUP 13A P.13A-398).
•Throttle Body Assembly Installation (Refer to GROUP
13A P.13A-400).
•Strut Tower Bar Installation (Refer to GROUP 42 P.42-9).
•Engine Coolant Supplying (Refer to GROUP 14 -
On-vehicle Service P.14-22).
•Accelerator Cable Adjustment (Refer to GROUP 17 -
On-vehicle Service P.17-2).
•Fuel Leak Check
AC303642AB
15
3
6
5
412 10 71
2
11
913
14
21 ± 4 N·m
9.0 ± 1.0 N·m
9.0 ± 1.0 N·m
18 ± 2 N·m
18 ± 2 N·m18 ± 2 N·m5.0 ± 1.0 N·m
31 ± 3 N·m
49 ± 9 N·m
N
N
N
8
Removal steps
1. Inlet manifold absolute pressure
sensor
2. Engine control pressure sensor
O-ring
3. Engine control detonation sensor
connector
4. T/M housing front lower cover stay
(L.H.)
5. Battery wiring harness clamp
connection
6. Inlet manifold stay
7. Brake booster vacuum hose
connection8. Emission control equip hose
connection
9. Fuel vapour control hose
connection
10. Inlet manifold stay
11. Inlet manifold
12. Inlet manifold gasket
13. EGR valve
14. EGR valve gasket
15. Emission vacuum hose & pipe and
emission solenoid valve assembly Removal steps (Continued)

INLET MANIFOLD
INTAKE AND EXHAUST15-6
REMOVAL AND INSTALLATION <4G6>M1151003001236
Pre-removal Operation
•Fuel Line Pressure Reduction (Refer to GROUP 13A -
On-vehicle Service P.13A-389).
•Engine Coolant Draining (Refer to GROUP 14 -
On-vehicle Service P.14-22).
•Strut Tower Bar Removal (Refer to GROUP 42 P.42-9).
•Throttle Body Assembly Removal (Refer to GROUP 13B
P.13B-336).
•Fuel Delivery Pipe and Fuel Injector Assembly Removal
(Refer to GROUP 13B P.13B-334).Post-installation Operation
•Fuel Delivery Pipe and Fuel Injector Assembly Installation
(Refer to GROUP 13B P.13B-334).
•Throttle Body Assembly Installation (Refer to GROUP
13B P.13B-336).
•Strut Tower Bar Installation (Refer to GROUP 42 P.42-9).
•Engine Coolant Supplying (Refer to GROUP 14 -
On-vehicle Service P.14-22).
•Accelerator Cable Adjustment (Refer to GROUP 17 -
On-vehicle Service P.17-2).
•Fuel Leak Check
AC303657
9.0 ± 1.0 N·m11 ± 1 N·m
20 ± 2 N·m
31 ± 3 N·m 36 ± 6 N·m
20 ± 2 N·m
20 ± 2 N·m
36 ± 6 N·m
36 ± 6 N·m
11
9 10 212
N1413N
AB
5.0 ± 1.0 N·m
3
1
11 ± 1 N·m
4
N
13 ± 1 N·m
5
6
(Engine oil)
7
8
Removal steps
1. Emission control equip hose
connector
2. Brake booster vacuum hose
connection
3. Earth cable connection4. Engine control detonation sensor
connector
5. Engine oil level gauge and guide
assembly
6. Engine oil filler O-ring
7. Emission vacuum hose connectionRemoval steps (Continued)

EXHAUST MANIFOLD
INTAKE AND EXHAUST15-7
INSPECTIONM1151003100616
Check the following points; replace the part if a
problem is found.
Inlet Manifold Check
1. Check for damage or cracking of any part.2. Clogging of the negative pressure (vacuum) outlet
port, or clogging of the exhaust gas recirculation
passages.
3. Using a straight edge and feeler gauge, check for
distortion of the cylinder head installation surface.
Standard value: 0.15 mm or less
Limit: 0.20 mm
EXHAUST MANIFOLD
REMOVAL AND INSTALLATION <4G1>M1151003300568
8. Battery wiring harness clamp
9. Inlet manifold stay
10. Inlet manifold
11. Inlet manifold gasket
12. Emission vacuum hose & pipe and
emission solenoid valve assembly
13. EGR valve
14. EGR valve gasketRemoval steps (Continued)
AC30366250 ± 10 N·m 24 ± 4 N·m
35 ± 6 N·m17 ± 2 N·m 29 ± 3 N·m
N
3
7
12 4
N
6
8
44 ± 5 N·m
AB
9
5N
29 ± 3 N·m
29 ± 3 N·m
29 ± 3 N·m
(Engine oil)

EXHAUST MANIFOLD
INTAKE AND EXHAUST15-10
REMOVAL SERVICE POINT
<> ENGINE CONTROL OXYGEN
SENSOR (FRONT) REMOVAL
Use special tool oxygen sensor wrench (MD998770)
to remove the engine control oxygen sensor (front).
INSTALLATION SERVICE POINT
>>A<< ENGINE CONTROL OXYGEN
SENSOR (FRONT) INSTALLATION
Use special tool oxygen sensor wrench (MD998770)
to install the engine control oxygen sensor (front).
INSPECTIONM1151003400543
Check the following points; replace the part if a
problem is found.
Exhaust Manifold Check
1. Check for damage or cracking of any part.2. Using a straight edge and a feeler gauge, check
for distortion of the cylinder head installation
surface.
Standard value: 0.15 mm or less
Limit: 0.20 mm
AC212566AC
MD998770
Engine control
oxygen sensor
(front)
AC212566AC
MD998770
Engine control
oxygen sensor
(front)