The thermostat housing on the 1998 Mazda 626 6 cylinder is located underneath the air filter housing. You need to remove this air filter housing to get to the thermostat housing. There's two (2) bolts the left connecting the thermostat housing to the motor and another two (2) bolts facing the steering wheel connecting it to the engine. This is where the thermostat is housed.
You have to drain the radiator, water goes to it, and remove the bolts, and remove the housing, a pain but take your time.
The air filter is located in the air cleaner housing, on top of the engine. You will need to remove the air cleaner housing cover to access the air filter.
remove the air filter housing, the iat sensor which should be on the housing, the MAF sensor, loosen the clamps and remove the elbows that connect to the manifold.
I have a 98 626es v6, thermostat is located under air filter housing on the right side of the engine if you are standing at the front of the car facing the engine
The oil filter on the 1998 MPV is on the side of the block. It screws on and is easily replaced.
you will find it under the plastic air filter housing , takes a 13mm socket to remove the three bolts holding on the housing and there it is.
drain transmiision fluid from transmission, remove bottom oil pan from tranny, and you will see filter there is no pan on bottom of transmission do anyone have the answer?!
it is an integral pump/filter unit located in the petrol tank
The thermostat can be found inside of the thermostat housing. The thermostat housing is located on the front of the engine.
in the fuel tank
On a 1998 B 4000, it is in the housing at the attachment of the upper heater hose.