This is a pain. Remove the old one and put the new one in. Use _only_ a genuine Nissan thermostat or the dingleberry may be incorrect causing incorrect warm-up time. You may need some glue to hold it in place during installation.
What a horrible answer....
Here is how you do it.
1. Disconnect the negative battery cable from the terminal. Drain the cooling system so that the level of coolant is below the level of the thermostat.
2.
Remove the thermostat housing and set it aside. Lift out the thermostat.
3.
Set the new thermostat in position. Make sure the jiggle valve is in the upright position. Replace the thermostat housing.
4.
Refill the cooling system with the appropriate type and amount of coolant. Replace the radiator cap securely.
5.
Reconnect the negative battery cable to the terminal. Start the engine and allow it to run for several minutes to warm up. Check for proper operation.
· Make sure the engine and the radiator are cool to touch before proceeding with the installation of a new thermostat. Never lay tools or engine parts on the battery or on top of the engine.
· Drain the coolant into a container that can be sealed. Ingestion is usually fatal. Properly dispose of coolant that's contaminated or several years old.
How do you change the thermostat in 1999 Mercury Villager
Do a Google search for it.
You don't, you replace or rebuild the engine.
Yes.
If you're talking about the sensor for internal temperature it's in the dashboard next to where the shift lever is.
Probably around $200 for the tank, and $200 for labor.
Remove the water supply hose from the top of your 2000 Mercury Villager thermostat housing. Remove the thermostat housing retaining bolts. The old thermostat will simply lifts out. Drop in the new thermostat and reverse the process.
According to the 1999 Mercury Villager Owner Guide : ( 20.0 US. gallons )
This is as complex procedure. I suggest you buy a repair manual if it is not obvious to you, and you don't have experience.
In the engine.
134-A
No, no room.