Grand Cherokee 2WD V8-5.2L VIN Y (1998)
9.
Allow the engine to idle for approximately 30 seconds. Do not allow more than 3 psi (20.7 kPa) of pressure to develop in the engine crankcase.
10.
If the attached vacuum / pressure gauge does not indicate that a vacuum is present in the engine crankcase, then the intake manifold plenum pan
gasket is good and no further internal engine vacuum leak diagnosis is required.
11.
If an internal vacuum leak is present then perform the Repair Procedure.
PARTS REQUIRED:
For the 5.2L / 5.9L:
1
04897383AC
Package, Intake Manifold Flange Gasket and Bolts
1
05017208AA
Gasket, Intake Manifold Plenum Pan
15
06034583
Bolt, Intake Manifold Plenum Pan
1
53030541
Gasket, Throttle Body
2(AR) 04318001
Conditioner, Combustion Chamber
For the 3.9L:
1
04897382AC
Package, Intake Manifold Flange Gasket and Bolts
1
05017207AA
Gasket, Intake Manifold Plenum Pan
14
06034583
Bolt, Intake Manifold Plenum Pan
1
53030541
Gasket, Throttle Body
2(AR)04318001
Conditioner, Combustion Chamber
REPAIR PROCEDURE:
1.
Refer to the appropriate year Service Manual, Section 9: ENGINE for removal and installation instructions.
NOTE:
CLEAN ALL OIL RESIDUE FROM THE INTERIOR SURFACES OF THE PLENUM PAN AND THE INTAKE MANIFOLD PLENUM
CHAMBER.
NOTE:
THE PROPER BOLT TORQUE AND TIGHTENING SEQUENCE IS CRITICAL AND MUST BE FOLLOWED WHEN TIGHTENING BOTH
THE PLENUM PAN BOLTS AND THE INTAKE MANIFOLD FLANGE BOLTS.