Oil Pan - REMOVAL & INSTALLATION4.6L Engine
If your vehicle is equipped with air conditioning, refer to
General Informatcion and Maintenance for
information regarding the implications of servicing your A/C system
yourself. Only a MVAC-trained, EPA-certified, automotive technician
should service the A/C system or its components.
Have the A/C system recovered by a MVAC-trained, EPA-certified, automotive technician.
Disconnect the battery cables, negative cable first, and remove the air inlet tube.
Relieve the fuel system pressure and disconnect the fuel lines; Drain the cooling system and remove the cooling fan and shroud.
When draining the coolant, keep in mind that cats and dogs are
attracted by the ethylene glycol antifreeze, and are quite likely to
drink any that is left in an uncovered container or in puddles on the
ground. This will prove fatal in sufficient quantity. Always drain the
coolant into a sealable container. Coolant should be reused unless it is
contaminated or several years old.
It may be necessary to loosen, but not remove, the 2 nuts on the rear
transmission mount and with a jack, raise the transmission extension
housing slightly to remove the pan.
Remove the upper radiator hose. Remove the wiper module and support bracket.
Disconnect and plug the compressor outlet hose at the compressor
and remove the bolt retaining the hose assembly to the right coil
bracket. Cap the compressor outlet.
Remove the engine harness connector from the retaining bracket on
the brake vacuum booster and detach the connector and transmission
Disconnect the throttle valve cable from the throttle body and disconnect the heater outlet hose.
Remove the nut retaining the ground strap to the right cylinder
head. Remove the upper stud and loosen the lower bolt retaining the
heater outlet hose to the right cylinder head and position out of the
Remove the blower motor resistor. Remove the bolt retaining the right engine mount to the lower engine bracket.
Disconnect the vacuum hoses from the EGR valve and tube. Remove the 2 bolts retaining the EGR valve to the intake manifold.
Raise and safely support the vehicle. Drain the crankcase and remove the engine mount through bolts.
Remove the EGR tube line nut from the right exhaust manifold and remove the EGR valve and tube assembly.
Disconnect the exhaust from the exhaust manifolds. Lower the exhaust system and support it with wire from the crossmember.
Position a jack and a block of wood under the oil pan,
rearward of the oil drain hole. Raise the engine approximately 4 in. and
insert 2 wood blocks approximately 2
in. thick under each engine mount. Lower the engine onto the wood blocks and remove the jack.
Remove the 16 bolts retaining the oil pan to the engine block and remove the oil pan.
If necessary, remove the 2 bolts retaining the oil pickup tube to
the oil pump and remove the bolt retaining the pickup tube to the main
bearing stud spacer. Remove the pickup tube.
See Figures 1, 2 and 3
Fig. 1: Position of wood blocks under the engine mounts-4.6L engine
Fig. 2: Oil pump pickup tube-4.6L engine
Fig. 3: Oil pan bolt torque sequence-4.6L engine
Loosen the line nut at the EGR valve prior to installing the assembly
into the vehicle. This will allow enough movement to align the EGR
valve retaining bolts.
Clean the oil pan and inspect for damage. Clean the sealing
surfaces of the front cover and engine block. Clean and inspect the oil
pickup tube and replace the O-ring.
If removed, position the oil pickup tube on the oil pump and hand
start the 2 bolts. Install the bolt retaining the pickup tube to the
main bearing stud spacer hand tight.
Tighten the pickup tube-to-oil pump bolts to 6-9 ft. lbs. (8-12
Nm), then tighten the pickup tube-to-main bearing stud spacer bolt to
15-22 ft. lbs. (20-30 Nm).
Position a new gasket on the oil pan. Apply silicone sealer to
where the front cover meets the cylinder block and rear seal retainer
meets the cylinder block. Position the oil pan on the engine and install
the bolts. Tighten the bolts, in sequence, to 15-22 ft. lbs. (20-30
Position the jack and wood block under the oil pan, rearward of
the oil drain hole, and raise the engine enough to remove the wood
blocks. Lower the engine and remove the jack.
Install the engine mount through bolts and tighten to 15-22 ft. lbs. (20-30 Nm).
Position the EGR valve and tube assembly in the vehicle and
connect to the exhaust manifold. Tighten the line nut to 26-33 ft. lbs.
Cut the wire and position the exhaust system to the manifolds.
Install the 4 nuts and tighten to 20-30 ft. lbs. (27-41 Nm). Make sure
the exhaust system clears the crossmember. Adjust as necessary.
Install a new oil filter and lower the vehicle.
Install the bolt retaining the right engine mount to the lower engine bracket. Tighten to 15-22 ft. lbs. (20-30 Nm).
Install a new gasket on the EGR valve and position on the intake
manifold. Install the 2 bolts retaining the EGR valve to the intake
manifold and tighten to 15-22 ft. lbs. (20-30 Nm). Tighten the EGR tube
line nut at the EGR valve to 26-33 ft. lbs. (35-45 Nm). Connect the
vacuum hoses to the EGR valve and tube.
Install the blower motor resistor. Position the heater outlet
hose, install the upper stud and tighten the upper and lower bolts to
15-22 ft. lbs. (20-30 Nm). Install the ground ******** the stud and
tighten to 15-22 ft. lbs. (20-30 Nm).
Connect the heater outlet hose and the throttle valve cable. If necessary, adjust the throttle valve cable.
Attach the engine connector and transmission harness connector. Install the harness connector on the brake vacuum booster.
Connect the air conditioning compressor outlet hose to the
compressor and install the bolt retaining the hose to the right coil
Install the upper radiator hose and connect the fuel lines. Install the wiper module and retaining bracket.
Install the cooling fan and shroud and fill the cooling system.
Fill the crankcase with the proper type and quantity of engine oil.
Connect the negative battery cable and install the air inlet tube. Start the engine and check for leaks.
Have a MVAC-trained, EPA-certified, automotive technician evacuate and recharge the air conditioning system.
Hope this helps (remember to rate this helps).