Hi i have a 2000 expy 4.6 with 144000miles on it.
does anyone know how to change the oil sending unit gasket?
it has been leaking for a while but this morning when i started my expy i noticed oil just gushing out between the engine and the oil sending unit.

thanks in advance

 

It's not a hard job. The gasket will run about $20.00 from Ford and it is just a matter of unbolting the adaptor from the block after draining the coolant as both go through the adaptor plate. This is a good time to change the oil, filter and coolant.
This info is for the 4X4 trucks.

SECTION 303-01A: Engine — 4.6L and 5.4L 2000 Expedition/Navigator Workshop Manual

IN-VEHICLE REPAIR

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Oil Filter Adapter —4x4
Removal

Raise and support the vehicle. For additional information, refer to Section 100-02 .
Remove the lower radiator hose (8286). For additional information, refer to Section 303-03 .
Remove the front drive axle assembly. For additional information, refer to Section 205-03 .
Remove the drain plug and drain the engine oil.

If the vehicle does have an oil cooler, remove the oil cooler. For additional information, refer to Oil Cooler in this section.
Disconnect the oil pressure sender electrical connector.

Remove the four bolts and the oil filter adapter.

Installation

Install a new oil filter adapter gasket (6840).

Position the oil filter adapter and install the four bolts.
Install a new oil filter adapter gasket.
Position the oil filter adapter and install the four bolts.
Connect the oil pressure sender electrical connector.

If the vehicle is equipped with an oil cooler, install the oil cooler. For additional information, refer to Oil Cooler in this section.
Install the drain plug.

Install the front drive axle assembly. For additional information, refer to Section 205-03 .
Install the lower radiator hose. For additional information, refer to Section 303-03 .
Lower the vehicle.
Fill the engine with Super Premium SAE 5W-30 Motor Oil XO-5W30-QSP or equivalent meeting Ford specification WSS-M2C153-G.

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Thank you so much for that write up.
i will call ford on monday and get the gasket.

 

Today i finished the repair on the oil filter mounting gasket, the whole repair took 4 hours it was pretty simple.

How do i get all of the air out of the cooling system? i had my expy sitting on an incline and had it running for about 35minutes but the upper radiator hose feels kind of soft is this normal? the gauge shows normal and the heat blows really hot.

thank you

 

If the heat is good front and rear you should be good to go. Just keep a watch on the res. for a few days and top it off if needed.