Lubricate the thermostat O-ring seal with clean engine coolant.ħ. To install, reverse the removal procedure.Ĭlean and inspect the O-ring seal. Extended light exposure causes this product to degrade. Do NOT allow this product to be exposed to ANY LIGHT for more than a day or two. NOTICE: Motorcraft(R) Specialty Green Engine Coolant is very sensitive to light. Mixing coolant types degrades the coolant corrosion protection and may damage the engine or cooling system. Use the same type of coolant that was originally used to fill the cooling system. NOTICE: Use Motorcraft(R) Specialty Green Engine Coolant or Motorcraft(R) Specialty Orange Engine Coolant. Remove the 2 bolts, thermostat housing cover, O-ring seal and thermostat.Ħ. Disconnect the lower radiator hose from the thermostat housing.ĥ. For additional information, refer to Section 414-01 See: Battery > Removal and Replacement > Battery.Ĥ. For additional information, refer to Cooling System Draining, Filling and Bleeding See: Cooling System > Procedures > Cooling System Draining, Filling and Bleeding.ģ. See: Vehicle Lifting > Procedures > Jacking and Lifting.Ģ. For additional information, refer to Vehicle Jacking and Lifting. With the vehicle in NEUTRAL, position it on a hoist. What temperature thermostat did you replace the original? You need a 195-degree thermostat. It is about the temperature of the coolant is too low. When the system fails to gather this information it can lose its effectiveness at starting the engine.It could be the sensor but I doubt it. The ECU needs to know the coolant temperature and the outside air temperatures in order to figure out the correct cold-start air/fuel combination. If you hit the gas pedal but struggle to get your car going, it could mean a problem with the coolant sensor. Note- If there is an excess of black smoke coming from the exhaust pipe, it is advised to contact a mechanic immediately. Inaccurate readings sent from the coolant temperature sensor can cause the fuel management system to mix fuel improperly. When the ratio of air-fuel is not in proportion, particularly if the mixture becomes too fuel-rich, It will get exceedingly difficult to process the fuel completely inside the combustion chamber, leading to the burning of the leftovers in exhaust pipes. If you notice black smoke coming out of the exhaust pipe it could be due to a miscalculation of the air-fuel mix in the engine. This is another clear-cut sign of a bad sensor. A faulty sensor can send a permanent cold signal to the engine by not pumping enough fuel when needed, while it can also feed a permanent heating signal by not turning the radiator fans when the temperature climbs. 5th most common cause of a check engine light in Nissan Altima models. If the coolant temperature sensor is not able to detect hot and cold conditions, it can cause the engine to get overheated. This DTC can be triggered by a missing or stuck open thermostat, a faulty coolant temp sensor, or damaged wiring to the coolant temp sensor circuit. If your car uses only one all-purpose temperature sensor that fails to produce an accurate reading of the engine’s temperature, a bad engine coolant temperature sensor might be the cause of the cooling fans not starting. While most cars have two separate sensors for the electric fans, dashboard, and engine management system, some vehicles only have one coolant temperature sensor to manage the cooling fans. Electrical Cooling Fans Not StartingĪnother suggestive sign of a broken coolant temperature is the cooling fans for the engine not coming on. This cycle will cause the engine to deliver poor fuel economy and more importantly, will lose its efficiency in the long run.

Coolant thermostat check engine light