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internal threads (Fig. 151). Use caution to start tap (4) Apply Mopar t Thread Sealant to threads of repair port (s). (5) Install repair port (s). Do not over torque repair port (s). REMOVAL - UPPER INTAKE MANIFOLD (1) Disconnect battery negative cable. electrical connector (Fig. 152). (3) Remove air inlet resonator to throttle body hose assembly. (4) Disconnect the throttle and speed control cables from throttle body, separate the throttle (5) Disconnect the EVAP hose at the throttle (Fig. 153). (6) Remove the EGR tube (Fig. 152). throttle position sensor (TPS) wiring connectors from (8) Disconnect the manifold absolute pressure (MAP) sensor electrical connector (Fig. 152). (9) Disconnect the PCV hose (Fig. 152). trol vacuum hoses from intake manifold (Fig. 152). (11) Remove intake manifold bolts and remove the manifold. (12) Cover the lower intake manifold with a suit- able cover while the upper manifold is removed. (13) Clean and inspect the upper intake manifold (Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANI- CLEANING (1) Discard gasket(s). INSPECTION Check manifold for: • Mounting surface distortion by using a straight- edge and thickness gauge. Fig. 151 Manifold Port (Nipple) Repair 1 - BRAKE BOOSTER PORT = 1/4 9 –18 NPT PIPE TAP 1 - LDP/SPEED CONTROL PORT = 1/8 9 –18 NPT PIPE TAP 2 - DRILL BIT = 7/16 9 BRAKE BOOSTER PORT 2 - DRILL BIT = 11/32 9 LDP/SPEED CONTROL PORT 3 - INTAKE MANIFOLD CS ENGINE 3.8L 9 - 191 INTAKE MANIFOLD - UPPER (Continued) |