Grand Caravan V6-3.3L Flex Fuel (2008)
Intake Manifold: Description and Operation
DESCRIPTION
The intake system is made up of an upper (4) and lower intake manifold. The upper intake manifold (4) is made of a composite material for the 3.8L
engine. The lower intake manifold also provides coolant crossover between cylinder heads and houses the coolant thermostat
The intake manifold utilizes a compact design with very low restriction and outstanding flow balance. This design allows the engine to perform with a
wide torque curve while increasing higher rpm horsepower.
If, for some reason, the molded-in vacuum ports break, the composite manifold can be salvaged. The vacuum ports are designed to break at the shoulder,
if overloaded. Additional material in the shoulder area provides sufficient stock to repair. For more information and procedure,See: Service and
Repair/Procedures/Intake Manifold - Standard Procedures. Also, if the special screws that attach the MAP sensor, power steering reservoir, and the EGR
tube become stripped, an oversized screw is available to repair the stripped-out condition. For more information and procedure,See: Service and
Repair/Procedures/Intake Manifold - Standard Procedures.
