Pull the gasket off from around the edges of the old thermostat. Place it around the new one. Push the new thermostat in the housing. Ensure the spring end goes in first.
Use a socket wrench to tighten the hose and pipe back on to the thermostat housing. Ensure the bolts are tight to create a seal so coolant does not leak out. Twist the radiator cap counterclockwise to remove it and pour the coolant back in to the radiator. Start the car and allow it to warm up. Once the car is warm, the level of the coolant may drop. If so, pour in additional coolant. Consult the owner's manual or the Dodge dealer for the correct type of coolant.
Tighten the radiator cap back on by hand. Close the hood and turn the car off. Gregory Crews has been in the film industry for three years and has appeared in more than 38 major motion pictures and 16 television shows. Service Location. Customer Ratings. Included for free with this service Online Booking. Mechanic comes to you. Free 50 point safety inspection. See availability.
What is an engine cooling system thermostat and how does it work? When to consider replacing the engine cooling system thermostat: Engine overheats. A thermostat with the valve stuck closed is a common cause of engine overheating. However, since there are other causes of overheating, a mechanic will thoroughly inspect the cooling system prior to condemning the thermostat.
Since it is usually not known how badly the engine overheated, the mechanic will also try to determine if there is evidence that the cylinder head gasket was blown. If so, it would be repaired prior to replacing the thermostat. Temperature gauge reads too low or too high. Thermostats can get sticky, causing the engine temperature to stray from the optimal range. Your dash-mounted temperature gauge will notify you of this malfunction. Cooling system repairs.
All thermostats eventually fail. Therefore, if the cooling system is already open for major repairs, such as water pump or radiator replacement, it is recommended to install a new thermostat simply as insurance against future breakdown. How do mechanics replace the engine cooling system thermostat?
Once the engine is completely cold, the radiator cap is loosened and enough coolant is drained from the radiator so the coolant level is below the thermostat housing. The thermostat housing is removed and the thermostat and gasket are extracted. Note that some cars have more than one cooling system thermostat and both might need replacement.
All mounting surfaces on the thermostat housing are cleaned of old gasket material. A new gasket is applied and the thermostat is re-installed in the correct orientation and with the temperature sensing cylinder facing downward towards the engine. The thermostat housing bolts are tightened to original equipment manufacturer OEM specifications using a calibrated inch-pound torque wrench.
The cooling system is refilled with the appropriate coolant type and the system is fully bled of all air. The car engine is run until the normal operating temperature is reached, and while taking precautions with the hot coolant, the coolant level is rechecked while confirming there is flow through the radiator — either visually or with an infrared temperature gun.
This will confirm the thermostat is open. Drain the cooling system via the petcosk or by removing the lower radiator hose. If the coolant is relatively new or in good condition, save it and reuse it.
See illustration Follow the lower radiator hose to the engine to locate the thermostat housing. Thermostat housing location on the 3.
On and earlier diesel models, unbolt the alternator and alternator mounting bracket, then set it aside for access to the thermostat. Full detailed instructions for this are in Chapter 5 of the Haynes manual. See illustrations Follow the upper radiator hose to the engine to locate the thermostat housing. Thermostat housing location on the Hemi engine - the air conditioning compressor is removed for clarity. On through diesel engines, the alternator bracket large arrow must be removed, then remove the bolts three small arrows and lift the thermostat cover off.
Squeeze the tabs on the hose clamp to loosen it from the hose s , then reposition the clamp several inches back up the hose.
Detach the hose s from the thermostat housing. If the hose is stuck, grasp it near the end with a pair of adjustable pliers and twist it to break the seal, then pull it off. If the hose is old or deteriorated, just cut it off and install a new one. Note: Special hose clamp pliers are available at most auto parts stores. If the outer surface of the thermostat housing where it mates with the hose is already deteriorated corroded, pitted, etc. If it is, the thermostat housing will have to be replaced.
Remove the thermostat housing from the engine. If the housing is stuck, tap it with a soft-faced hammer to jar it loose. Be prepared for some coolant to spill as the gasket seal is broken. Note: On 8. Go to front page. Search results Search Haynes. Year Year
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