Diagnosis And Testing - Intake Manifold Leaks; Intake Manifold - Upper; Removal - Chrysler 300M Service Manual

LH
INTAKE MANIFOLD (Continued)
1 - BOLT
2 - HEATER SUPPLY TUBE
3 - BOLT
4 - BOLT
5 - KNOCK SENSOR
DIAGNOSIS AND TESTING - INTAKE
MANIFOLD LEAKS
An intake manifold air leak is characterized by
lower than normal manifold vacuum. Also, one or
more cylinders may not be functioning.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS OR THE FAN.
DO NOT WEAR LOOSE CLOTHING.
(1) Start the engine.
(2) Spray a small stream of water (Spray Bottle) at
the suspected leak area.
(3) If engine RPM'S change, the area of the sus-
pected leak has been found.
(4) Repair as required.
Fig. 120 LOWER INTAKE MANIFOLD
6 - GASKET
7 - BOLT
8 - O-RING
9 - INTAKE MANIFOLD-LOWER

INTAKE MANIFOLD - UPPER

REMOVAL

terminal.
Sensor connector. Remove air cleaner housing and
inlet hose (Fig. 121).
throttle arm and bracket (Refer to 14 - FUEL SYS-
TEM/FUEL
CABLE - REMOVAL).
lowing sensors and actuators:
(1) Disconnect negative cable from remote jumper
(2) Disconnect the Inlet Air Temperature (IAT)
(3) Remove throttle and speed control cables from
INJECTION/THROTTLE
(4) Disconnect electrical connectors from the fol-
• Short Runner Valve (SRV)(If Equipped)
• Manifold Tuning Valve (MTV)(If Equipped)
• Throttle Position Sensor (TPS)
• Idle Air Control (IAC)
• Manifold Absolute Pressure (MAP)
ENGINE 9 - 71
CONTROL