Mitsubishi LANCER EVOLUTION-IV 1998, Workshop Manual, Page: 271 / 526

INTAKE AND EXHAUST –
Service Specifications /
Special Tool / On-vehicle Service
15-2
SERVICE SPECIFICATIONS
Items Standard value Limit
Turbocharger boost pressure kPa {kg/cm
2
} 53 – 87 {0.54 – 0.89} –
Wastegate actuator activation pressure kPa {kg/cm
2
} Approx. 100 {1.02} –
Wastegate solenoid valve coil resistance (at 20
_
C)
Ω
62 – 74 –
Air bypass valve activation pressure kPa {mmHg} Approx. 53 {400} –
Secondary air control solenoid valve coil resistance (at 20
_
C)
Ω
28 – 36 –
Intake manifold and exhaust manifold mounting surface distortion
mm Within 0.15 0.20
SPECIAL TOOL
Tool Number Name Application
MB998770 Oxygen sensor
wrench Removal and installation of oxygen sensor
ON-VEHICLE SERVICE
1. TURBOCHARGER BOOST PRESSURE
CHECK
Caution
Carry out driving tests in a location where full-throttle
acceleration is possible with utmost safety. Two persons
should be in the vehicle during the test, the assistant
in the front passenger seat reading the pressure gauge.
(1) Disconnect the hose (black) from the boost pressure
control solenoid valve and fit the pressure gauge to this
hose.
After the hose (black) has been disconnected, fit a blank
plug to the solenoid valve nipple.
(2) Drive at full-throttle acceleration in second gear and
measure the boost pressure when the engine speed
exceeds about 3,000 r/min.
Standard value:
53 – 87 kPa {0.54 – 0.89 kg/cm
2
} <EVOLUTION-IV>
59 – 84 kPa {0.61 – 0.86 kg/cm
2
} <EVOLUTION-V>
Wastegate
solenoid valve
Blank plug