Dodge R1500 1999 Service Manual page 940

INTAKE MANIFOLD AIR HEATER
Removal & Installation
1) Disconnect negative battery cables. Disconnect clamp and
rubber hose at air intake housing. Remove engine oil dipstick tube
mounting bolt and position dipstick tube aside. Disconnect heater
electrical cables at cable mounting studs. Remove 4 air intake housing
bolts. Remove air intake housing from top of intake manifold air
heater elements. See Fig. 13.
2) Remove heater element assembly from intake manifold. Clean
old gasket from air intake housing, intake manifold, and both sides of
engine block. To install, reverse removal procedure using NEW gaskets.
Tighten all bolts to specification. See TORQUE SPECIFICATIONS.
Fig. 13: Removing Intake Manifold Air Heater
Courtesy of Chrysler Corp.
INTAKE MANIFOLD AIR HEATER RELAYS