Page 1569 of 3870
Fig. 57: Identifying Installation Position Of Valve Spring Compressor Special Tool
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
INSTALLATION SERVICE POINTS >>A<< VALVE STEM SEAL INSTALLATION 1. Apply a small amount of engine oil to the valve stem seal.
2. Use special tool MD998774 to fill a new valve stem seal in the valve guide
using the valve stem area as a guide. NOTE: Installation position of valve sprin
g compressor special tool
(MD998772) is different between exhaust side and intake
side.
CAUTION:
Valve stem seals cannot be reused. Special tool MD998774 must be used to
install the valve stem seal. Improper
installation could result in oil leaking past the
valve guide.
2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor
Page 1778 of 3870

Q: Is there more noise on the customers radio?
YES: Check all power and ground connections. If all connections are in
good condition, consult the radio manufacturers service center.
NO: The observed noise is normal.
INSPECTION PROCEDURE 13: Noise is Detected with Engine Running. DIAGNOSIS
CAUTION:
Never connect a noise filter to the high tension
cable (spark plug wire). Spark plug wires
incorporate resistors which have the effect of
suppressing noise. If a spark plug wire is found
to be causing noise, it must be replaced. Confirm that the noise is not from an external
source. Noise prevention should be performed by
suppressing strong sources of noise first.
NOTE: Voltage surges can be induced in the electrical system by
the collapse of a field (i.e. When power is removed from the
coil in an A/C compressor clutch). This induced voltage
surge will radiate a Radio Frequency (RF) signal that is
picked up by the audio unit. In the case of the compressor
clutch a "pop" will be heard through the speakers. The
capacitor, installed on this vehicle, will store the excess
voltage and prevent the production of RF noise. This is
because the capacitor will charge and discharge as the
voltage fluctuates. This has the effect of "attracting" noise
and bleeding it to ground without interfering with the
normal flow of current through the system.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor
Page 1955 of 3870
Page 1997 of 3870

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
Page 1999 of 3870

When metering R-134a into the refrigeration system, keep the supply tank or cans
in an upright position. If the refrigerant container is on its side or upside down,
liquid refrigerant will enter the system and damage the compressor.
Refrigerant will tarnish bright metal and chrome surfaces, and in combination with
moisture can severely corrode all metal surfaces. OPERATION CONDENSER FAN AND RADIATOR FAN CONTROL For the operation of each fan, refer to
SYMPTOM CHART
.
COMPRESSOR CONTROL WHEN OPERATING THE AIR CONDITIONING SWITCH
The air thermo sensor, which senses the temperature of the air flowing out of
the evaporator, deactivates the compressor at 3°C (37.4°F) or below. The dual pressure switch turns OFF when the refrigerant pressure becomes
excessively high or low, thus protecting the compressor circuit. When the air thermo sensor is activated, and the ignition switch, blower switch,
and air conditioning switch are ON, the A/C compressor clutch relay is
energized.
WHEN OPERATING THE MODE SELECTION DIAL
The air conditioning will work when the mode selection dial is set to the
"Defroster" or "Defroster/foot" position, or the temperature control dial is set to
the "MAX A/C" position. In other dial positions, when the air conditioning
switch is turned on, the air conditioning will work.
A/C COMPRESSOR CLUTCH RELAY ON CONDITIONS
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2000 of 3870
Fig. 1: A/C Compressor Clutch Relay On Conditioning Chart
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
SERVICE PRECAUTIONS CAUTION LABELS The refrigerant gas warning label must be affixed in the location shown in the
figure on the left. Follow the instructions on the label when servicin
g.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2175 of 3870
Fig. 114: Heater And A/C System Symptom Chart
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
SYMPTOM PROCEDURES INSPECTION PROCEDURE 1: WHEN THE IGNITION SWITCH IS "ON", THE A/C DOES NOT OPERATE TECHNICAL DESCRIPTION (COMMENT) The blower system or the compressor system may be defective if there is no cool air
coming from the vents. TROUBLESHOOTING HINTS
Malfunction of blower motor Malfunction of A/C compressor
DIAGNOSIS Check that the blower motor operation when the blower switch is moved to the
"HI" position.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2195 of 3870
Fig. 129: View Of A/C Compressor Sensor Circuit
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor