low oil pressure MITSUBISHI ENDEAVOR 2004 Service Repair Manual

2004 TRANSMISSION
Automatic Transaxle Overhaul - Endeavor
GENERAL INFORMATION This automatic transaxle is made up of the following main parts.
The gear train is made up of 3 multi-plate clutches, 2 multi-plate brakes and 2
planetary gears made up of a sun gear, carrier, pinion gear and annulus gear.
The torque converter employs a 3 element, 1 step, 2 phase lock-up clutch.
The cases consist of a converter housing, transaxle case, rear cover and a valve
body cover.
Parts related to oil pressure regulation are the oil pump, which pressurizes the oil;
the regulator, which controls the pressure setting; the solenoid valves, which
changes the oil pressure with electrical signals; the pressure control valve, which
controls the oil pressure coming from the solenoid valve that effects each clutch and
brake; each kind of valve, which carry out the retention of the oil pressure through
the lines; and finally the valve body, which houses all the valves. SECTIONAL VIEW < F4A5A >
2004 Mitsubishi Endeavor XLS
2004 TRANSMISSION Automatic Transaxle Overhaul - Endeavor


2004 Mitsubishi Endeavor XLS
2004 TRANSMISSION Automatic Transaxle Overhaul - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
REQUIRED SPECIAL TOOL
MD998054: Oil Pressure Switch Socket Wrench MD998717: Crankshaft Front Oil Seal Installer
REMOVAL SERVICE POINT << A >> OIL PAN, LOWER REMOVAL 1. Remove the lower oil pan mounting bolts.
2. Remove the lower oil pan by tapping on its side with a plastic hammer (mallet)
through a wooden plank held against it. < B > OIL PAN, UPPER REMOVAL 1. Remove the long bolts "A" shown in the illustration first.
CAUTION: Do not use a scraper or special tool to remove
the oil pan.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

Mixture Check)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Check that the basic ignition timing is within the standard value.
Standard value: 5° BTDC+/-3°
4. Start the engine and increase the engine speed to 2,500 r/min for 2 minutes.
5. Set the CO, HC tester.
6. Check the CO contents and the HC contents at idle.
Standard value:
CO contents: 0.5% or less
HC contents: 100 ppm or less
7. If the CO and HC contents do not remain inside the standard value, check the
following items:
Diagnostic output Closed-loop control (When the closed-loop control is carried out normally, the
output signal of the heated oxygen sensor changes between 0 - 400 mV and
600 - 1,000 mV at idle.) Fuel pressures Injector Ignition coil, spark plug EGR system and EGR valve leak Evaporative emission system Compression pressure
COMPRESSION PRESSURE CHECK Re
quired S
pecial Tool
:
NOTE: Replace the catalytic converter when the CO and HC
contents do not remain inside the standard value, even
though the result of the inspection is normal for all items.
2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

Fig. 22: Setting Compression Gauge To One Of Spark Plug Holes

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. Crank the engine with the throttle valve fully open and measure the
compression pressure.
Standard value (at engine speed of 200 r/min): 1,548 kPa (225 psi)
Minimum limit (at engine speed of 200 r/min): 1,117 kPa (162 psi)
7. Measure the compression pressure for all the cylinders, and check that the
pressure difference of the cylinders are below the limit.
Limit: 98 kPa (14 psi)
8. If there is a cylinder with compression or a compression difference that is
outside the limit, pour a small amount of engine oil through the spark plug
hole, and repeat the operations in steps 6 to 8.
1. If the com
pression increases after oil is added, the cause of the

2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

3. With the engine idling, change the engine load (shift from N to D range, for
example) to make sure that there is no change in the level of abnormal noise.
If there is a change in the level of abnormal noise, suspect a tapping noise due
to worn crankshaft bearing or connecting rod bearing (In this case, the lash
adjuster is in good condition.).
4. After completion of warm-up, run the engine at idle to check for abnormal
noise.
If the noise is reduced or disappears, clean the lash adjuster (Refer to
ROCKER ARMS AND CAMSHAFT
). As it is suspected that the noise is
due to seizure of the lash adjuster. If there is no change in the level of the
abnormal noise, proceed to step 5.
5. Run the engine to bleed the lash adjuster system (Refer to LASH ADJUSTER
CHECK
.).
6. If the abnormal noise does not disappear after air bleeding operation, clean the
lash adjuster (Refer to ROCKER ARMS AND CAMSHAFT
).
Bleeding lash adjuster system 1. Check engine oil and add or change oil if required. NOTE: Parkin
g the vehicle on a
grade for a lon
g time ma
y decrease
oil in the lash adjuster, causing air to enter the high
pressure chamber when starting the engine.
NOTE: After parking for many hours, oil may run out from the oil
passage and take time before oil is supplied to the lash
adjuster, causing air to enter the high pressure chamber.
NOTE: In the above cases, abnormal noise can be eliminated by
bleeding the lash adjuster system.
NOTE: If the engine oil level is low, air is sucked from the oil

2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

2004 HVAC
Heater Air Conditioning, Ventilation - Endeavor
GENERAL DESCRIPTION The heater and cooling units are combined in a single unit, which, with the mode
film damper and flow rate control valve in the heater unit, reduces ventilation
resistance, increases fan power, and decreases noise.
GENERAL SPECIFICATION SAFETY PRECAUTIONS Because R-134a refrigerant is a hydro fluorocarbon (HFC) which contains
hydrogen atoms in place of chlorine atoms, it will not cause damage to the ozone
layer.
Ozone filters out harmful radiation from the sun. To assist in protecting the ozone
layer, Mitsubishi Motors Corporation recommends an R-134a refrigerant recycling
device.
Refrigerant R-134a is transparent and colorless in both the liquid and vapor state.
Since it has a boiling point of -29.8°C (-21.64°F) at atmospheric pressure, it will be
a vapor at all normal temperatures and pressures. The vapor is heavier than air, non-
flammable, and non-explosive. The following precautions must be observed when
handlin
g R-134a.
ITEM
SPECIFICATION
Heater control assembly
Dial type
Compressor
MSC105CA
Compressor Model
Scroll type
Refrigerant and quantity g
(oz)
R-134a (HFC-134a), Approximately 560 - 600
(19.75 - 21.16)
WARNING:Wear safety goggles and gloves when servicing the
refrigeration system to prevent severe damage to
eyes and hands.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor


2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

R-134a evaporates so rapidly at normal atmospheric pressures and temperatures that
it tends to freeze anything it contacts. For this reason, extreme care must be taken to
prevent any liquid refrigerant from contacting the skin and especially the eyes.
Always wear safety goggles when servicing the refrigeration part of the A/C
system. Keep a bottle of sterile mineral oil handy when working on the refrigeration
system.
1. Should any liquid refrigerant get into your eyes, use a few drops of mineral oil
to wash them out.
R-134a is rapidly absorbed by the oil.
2. Next, splash your eyes with plenty of cold water.
3. Call your doctor immediately even if irritation has ceased.
In most instances, moderate heat is required to bring the pressure of the refrigerant
in its container above the pressure of the system when charging or adding
refrigerant.
A bucket or large pan of hot water not over 40°C (104.0°F) is all the heat required
for this purpose. Do not heat the refrigerant container with a blow torch or any other
means that would raise temperature and pressure above this temperature. Do not
weld or steam-clean on or near the system components or refrigerant lines.
WARNING:Do not heat R-134a above 40°C (104.0°F) or it may
catch fire and explode.
CAUTION: Keep R-134a containers upright when charging the
system.
WARNING:The leak detector for R-134a should be used to
check for refrigerant gas leaks.
CAUTION: Do not allow liquid refrigerant to touch bright metal
or it will be stained.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

DISCHARGING SYSTEM Use the refrigerant recovery unit to discharge refrigerant gas from the system. REFILLING OF OIL IN THE A/C SYSTEM Too little oil will provide inadequate compressor lubrication and cause a
compressor failure. Too much oil will increase discharge air temperature.
When a compressor is installed at the factory, it contains 140 cm
3 (4.7 fl.oz) of
refrigerant oil. While the A/C system is in operation, the oil is carried through the
entire system by the refrigerant. Some of this oil will be trapped and retained in
various parts of the system.
When the following system components are changed, it is necessary to add oil to
the system to replace the oil being removed with the component.
Compressor oil: SUN PAG 56

Quantity:

Evaporator: 60
cm
3 (2.0 fl.oz)

Condenser:
15 cm
3 (0.5 fl.oz)
Suction hose: 10 cm3 (0.3 fl.oz)

PERFORMANCE TEST The vehicles to be tested should be parked out of direct sunlight.
1. Close the high and low-pressure valve of the gauge manifold.
2. Connect the charging hose (blue) to the low-pressure valve and connect the
UNIT
.
NOTE: Refer to the REFRIGERANT RECOVERY AND RECYCLING
UNIT'S INSTRUCTION MANUAL FOR OPERATION OF THE UNIT
.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

ADJUSTMENT 1. Select a quiet area for testing. Duplicate conditions as much as possible.
Switch the compressor on and off several times to clearly identify compressor
noise. To duplicate high ambient conditions (high head pressure), restrict air
flow through the condenser. Install a manifold gauge set to make sure
discharge pressure doesn't exceed 2,070 kPa (300.2 psi).
2. Tighten all compressor mounting bolts, clutch mounting bolt, and compressor
drive belt. Check to assure clutch coil is tight (no rotation or wobble).
3. Check refrigerant hoses for rubbing or interference that can cause unusual
noises.
4. Check refrigerant charge. (Refer to
CHARGING
and
DISCHARGING
).
5. Recheck compressor noise as in Step 1 .
6. If noise still exists, loosen compressor mounting bolts and retighten. Repeat
Step 1 .
7. If noise continues, replace compressor and repeat from Step 1 .
POWER RELAY CHECK FRONT BLOWER RELAY CONTINUITY CHECK
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

2004 HVAC
Automatic Air Conditioning - Endeavor
GENERAL DESCRIPTION For the heater and air conditioning system, the heater and cooling units are
combined in a single unit, which, with the a mode film damper and flow rate control
valve in the heater unit, reduces ventilation resistance, increases fan power, and
decreases noise. AUTOMATIC AIR CONDITIONING GENERAL DESCRIPTION

SAFETY PRECAUTIONS Because R-134a refrigerant is a hydro fluorocarbon (HFC) which contains
hydrogen atoms in place of chlorine atoms, it will not cause damage to the ozone
layer.
Ozone filters out harmful radiation from the sun. To assist in protecting the ozone
layer, Mitsubishi Motors Corporation recommends an R-134a refrigerant recycling
device.
Refrigerant R-134a is transparent and colorless in both the liquid and vapor state.
Since it has a boiling point of -29.8°C (-21.64°F) at atmospheric pressure, it will be
a vapor at all normal temperatures and pressures. The vapor is heavier than air, non-
flammable, and no
n-ex
plosive. The followin
g precautions must be observed when
ITEM
SPECIFICATION
Heater control assembly
dial type
Compressor
MSC105CA
Compressor Model
Scroll type
Refrigerant and quantity g
(oz)
R-134a (HFC-134a), Approximately 560 - 600
(19.75 - 21.16)
WARNING:Wear safety goggles and gloves when servicing the
refrigeration system to prevent severe damage to
eyes and hands.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor


2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor