The thermostat is located right by the engine under the air intake box. To get to it, the coil pack has to be removed. That is held on by four 7mm bolts. The housing is held on by 2 12mm bolts.
-Carlos You have to remove your air filter box, and it is underneath it. Basically, you will see a metal coolant pipe running from the bottom of the radiator to a junction right next to your intake manifold, and there will be 2 bolts holding it on, as well as a bolt holding the collant pipe to the block. Also, when you replace the thermostat, you have to replace the gasket. I used 2 gaskets, one on the thermostat (the one I took out had a big oring thingy around it, the new one didn't, nor did they hayne's manual mention an oring, so i reused it), and there is one that goes on the thermostat housing. It's like .99 at autozone, and the thermostat is like $10. Make sure you face it the same way too! Otherwise, your car will continue to overheat. Also, you MUST use RTV gasket sealant on the housing gasket (but not on the oring gasket, if you have one). And NO, you DO NOT have to remove the intake manifold.
.....[======]..\\........| ....<----rear bank of cylinders
.INTAKE MAN%........| ....<-----% sign is the thermostat
.....[======]..........| .....<----front bank of cylinders
_________________| .....<----front of car
my 1998 4 cylinder protege is under left of air filter right of engine I think.
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.
The thermostat can be found inside of the thermostat housing. The thermostat housing is located on the front of the engine.
follow your radiator hose.
follow upper radiator hose to motor
The thermostat is located by the side of the cylinder block near the coolant inlet. Remove the coolant inlet housing after disconnecting cables and loosening the holding bolts. You will be able to remove the thermostat to replace it.,
The thermostat is located under the housing cover bolted on the motor. follow the top radiator hose to the motor. the thermostat is under the hose flange that the radiator hose attaches to.
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 thermostat on a 1998 Toyota Corolla is located next to the alternator. The alternator may have to be taken off to replace the thermostat.
I have 182 k on my 1996 4-cylinder Mazda 626
Thermostat is located inside water outlet. You have remove the outlet if you want to replace the thermostat.