There has been some talk that the Mercury Villager doesnt have a great cooling system, sometimes a bigger radiator replacement might help.. but either way you have to keep the coolant, timming, etc in perfect state.
The reason why it goes from normal to hot then back to normal is because that is usually when the temperature rises hi enouth for the thermostat to open up and lets the cooling back in circulation thru the whole system...
How do you change the thermostat in 1999 Mercury Villager
Yes.
Nothing. The Villager can run any normal ethanol-oxygenated gas up to 15% with no problem.
It should be 30-35 psi with the engine running.
According to the 1999 Mercury Villager Owner Guide : ( 20.0 US. gallons )
In the engine.
No, no room.
134-A
In the fuel tank.
ABS was an option. Not all have it.
4.5 quart
There are two.