Manifold, Intake, CNG : Removal: Removal-CNG

WARNING: This page is about a different car, the 2013 RAM 2500 HD and 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Clean Air Tube, IAT Sensor Electrical Connector & Air Cleaner Housing

Courtesy of CHRYSLER GROUP, LLC

Disconnect the intake air temperature (IAT) sensor electrical connector (2).
Remove the clean air tube (1) from the air cleaner housing (3) and the throttle body.
Disconnect the makeup air hose.
Remove the air cleaner housing. Refer to BODY, AIR CLEANER, REMOVAL, 5.7L .
Perform the fuel pressure release and the CNG pressure release procedures. Refer to FUEL SYSTEM PRESSURE RELEASE and FUEL TUBE PURGING - CNG .

Fig 2: Battery
Courtesy of CHRYSLER GROUP, LLC
Disconnect the negative battery cable (1).
Disconnect the CNG supply line connect fitting at the fuel rail.

Fig 3: CNG Fuel Rail & Fuel Rail Sensor
Courtesy of CHRYSLER GROUP, LLC
Disconnect the fuel rail sensor (2) at the CNG fuel rail (1).

Fig 4: Fuel Supply Line Quick Connect Fitting At Fuel Rail
Courtesy of CHRYSLER GROUP, LLC

NOTE:
Excessive fuel spillage onto the gaskets can cause gaskets to expand and dislodge from the gasket groove.
Disconnect the fuel supply line quick connect fitting at the fuel rail (1) and plug the fuel supply line with a shipping cap to prevent spillage. Refer to FITTING, QUICK CONNECT .
NOTE:
The factory fuel injection electrical harness is numerically tagged (INJ 1, INJ 2, etc.) for injector position identification. If the harness was not tagged, note the electrical connector's location during removal.
Disconnect the electrical connectors to all fuel injectors and position the fuel injector electrical harness aside.
Remove the main engine electrical harness support strap at the rear of the intake manifold and position harness aside.

Fig 5: A/C Line P-Clip & Retaining Bolt
Courtesy of CHRYSLER GROUP, LLC
Remove the A/C line P-Clip retaining bolt (1) from the throttle body bracket and remove the P-Clip (2).
Secure the A/C line out of the way.
Remove the generator. Refer to REMOVAL GENERATOR, REMOVAL .
Remove the throttle body bracket retaining bolt from the intake manifold and remove the bracket.
Disconnect the electrical connector at the throttle body and reposition the harness.

Fig 6: Intake Manifold Retaining Bolt Removal & Tightening Sequence
Courtesy of CHRYSLER GROUP, LLC
Using the sequence shown in illustration, remove the intake manifold retaining bolts.
NOTE:
Standard gasoline engine shown in illustration. CNG engine similar.

Fig 7: MAP Sensor
Courtesy of CHRYSLER GROUP, LLC
Slide the intake manifold forward and disconnect both the manifold air pressure (MAP) sensor (1) and the short runner valve (SRV) connectors located at the rear of the intake manifold.
Remove the intake manifold and throttle body as an assembly.