The price varies according to the section of the country you live in. Call a couple of local garages for quotes. GoodluckJoe
I just replaced the water pump in my 1985 Grand Marquis for $45 from Federated. Be prepared for a decent amount of work. Good luck.
Another
I just checked, and a remanufactured water pump should run about $30.00, and a new one about $45.00 plus the "O-ring" which should be about $4.00. These prices are from a parts store, not the dealership, and do not include installation. I would recommend that you do the installation yourself, it's not that difficult. I did my 1992 GM water pump myself, and it was a piece of cake. You might want to buy a Haynes Manual first.
i just replaced mine today and first thing is it is a pain in the rump to get the fan off that is the hard part after that it's easy and it cost me $38 re-manufactured and it has a life time warranty but before you do changing try the thermostat then the temp sensor i changed my whole cooling system today and my car still says its over heating but its not its in the temp sending sensor.
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take off old starter and install new one in its place. finished
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You should have C.O.P. ( coil on plug) there are no wires.
take it to a shop
alot
A 2000 Grand Marquis does not have struts, it uses a conventional shock/spring type suspension.
A dealership would be able to replace the key.
At least $75