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Spring towards engine.Spring towards engine.
Thermostat sticking. Replace thermostat and gasket.
The thermostat is probably stuck in the open position.
The spring goes to the engine side.
The thermostat housing is where the lower radiator hose attaches to the engine. remove the hose and the housing (2 bolts) and the thermostat is in there (it may come out with the housing)
The thermostat on a 6 liter 2003 Chevy express is located on the left side of the water pump. The thermostat is a one piece unit attached to the thermostat housing, which is then mounted to the upper left side of the water pump. The average cost for this one piece thermostat/housing is around $25.00.
Follow the lower radiator hose from the radiator to the engine. It terminates into a device that bolts onto the engine block. Remove this device and the thermostat will be inside.
For the 2.7l engine, the thermostat housing is all one piece. The housing is located under the alternator and attached to the engine block.
Check in removable housing at the engine end of the upper radiator hose 3.7L it is at the end of the lower hose.
Just pull up on it and wiggle at the same time, it will come off.
The 2003 Subaru thermostat is located inside of the thermostat housing, on the front of the engine. The thermostat will be near the bottom of the engine.
Where is the thermostat location on mazda protege 2003?