[swein41]

How do you replace a 99 taurus water pump

[TxGreaseMonkey]

Here's how to do one on a Duratec, which I just did myself several weeks ago:

Water Pump Removal: 2000 Taurus w/Duratec Engine

1. Disconnect negative battery cable and, two minutes later, disconnect positive battery cable, to prevent accidental deployment of air bags.
2. Remove serpentine belt.
3. Place car on jack stands.
4. Trick: Remove right-front wheel and plastic wheel-well liner (3 screws and 4 push pins), for access.
5. Remove air dam and drain radiator.
6. Disconnect radiator hoses from water pump.
7. Remove antifreeze reservoir (degasser), for improved access.
8. Remove tensioner pulley, for improved access.
9. Remove water pump assembly, by loosening four 13 mm nuts securing the pump/housing to engine (3 from the top and 1 through wheel-well access) and three 10 mm bolts securing the pump/housing to the air conditioning compressor brace (through wheel-well access).
10. Disconnect heater hose from water pump.
11. Separate water pump from pump housing.
12. Clean gasket and sealant material from pump housing.
13. Coat new gasket, on both sides, with black RTV sealant, Permatex No. 2, or other suitable sealant.
14. Install pump on pump housing and tighten the (7) M6x1.0, Grade 5, cap screws hand-tight. Then, tighten cap screws to 98 inch-pounds (lubricated), using a 5 mm hex bit socket. The Haynes Manual and AllData say to tighten the cap screws to 18 lb.-ft. which will strip the aluminum threads in the water pump.
15. Install new pump/housing on engine, tightening the 3 bolts securing the air conditioning compressor brace to 18 lb.-ft. and the 4 nuts securing the pump/housing to the engine to 22 lb.-ft.
16. Reattach radiator hoses, heater hose, button everything up, and refill with coolant.