Acura 19301-PAA-306 Thermostat Assembly (Nippon Thermostat)

Before supposing that the thermostat is responsible for cooling system trouble, check the coolant level, tension of the drivebelt and if temperature gauge operates. If it takes a while for the engine to warm up, then most probably the thermostat is stuck open and needs to be replaced. In case your engine runs hot and lower radiator hose isn't hot, you may need to replace its thermostat which may be closed frozen. No driving must happen without a thermostat in a vehicle because it will impair computer operations as well as fuel economy. This means that the coolant is moving and that thermostat is open if lower radiator hose becomes hot. Start by removing cable from negative terminal of battery before replacing the old one with new one. Drain coolant system only when antifreeze is in good condition should you save it out instead of disposing off Pouring down into environment's drain plug. Follow lower radiator hose on an engine to where there are thermostat housing covers. Disconnect electrical connector connected to coolant temperature sensor or detach the hose from fitting Remove this fitting by using adjustable pliers twisting on stuck hose breaking its seal Sometimes such hoses are cut away and a fresh pipe fitted in place Once this fitting has deteriorated beyond use; you should now consider changing these covers of housing for thermostats Removing bolts covering thermostat cover edging them apart Note how they were installed so that you can remove them Clean any old gasket material or sealant from housing as well as cover The rubber gasket placed over top of new thermostats thus further known as jiggle pin would also be installed into these engines' housings Lastly, tightens securely all bolts together with installing hose clam again Check for leaks after refilling cooling system before starting engine.