you may have trapped air in the cooling system..try bleeding the cooling system
Follow the lower radiator hose from the radatoro to the engine. The lower hose is attached to the thermostat at the engine. Are you haveing problems with the engine warming up but the heat not blowing as hot as it should? Consider the heater core.
where the relay for rear blower in Nissan quest 1997
4
Under the dashboard in the passenger side
You will find the thermostat on the passengers side of the engine where the top radiator hose goes into the engine.
Try the engine end of the upper radiator hose in a removable housing
Located diretly behind the center console and it is a real pain to get to. Try buying the Haynes manual for the Mercury Villager/Nissan Quest and it helps somewhat.
Yes, the 1993 Mercury Villager was a 1992 Nissan Quest. The last year Nissan used a Carburetor on a Quest. Fuel injection system replaced the carburetor in 1993.
From what my mechanic tells me, it is under the manifold. No, form my eperience (replacing that sucker) the thermostat on the 1996 Nissan quest is on the left side of the engine, where your drive belts are located. in order to access it first you have to take off your serpentine belts. then you have to take off the upper and lower timing belt covers. the thermostat housing is directly above and slightly behind the water pump.
It's on the left lower part of the engine. Follow the lower hose back from the radiator. When you disconnect the hose at the engine you will see the thermostat. It's tough to get at.
Nissan Quest was created in 1993.
The first thing I would check is the coolant level. If it's full, it could be the thermostat.