Dodge Aspen/Volare 1976-1980 Repair Guide

Thermostat

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The thermostat is located in the engine water outlet housing at the front of the engine, connected to the upper radiator hose. Poor heater output is often caused by a thermostat stuck in the open position; occasionally a thermostat sticks shut causing overheating.


WARNING
Do not attempt to correct an overheating condition by permanently removing the thermostat. This will result in the coolant flowing through the radiator too fast to be cooled properly or in coolant loss. Thermostat flow restriction is designed into the system.

REMOVAL & INSTALLATION





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Fig. Fig. 1 To replace the thermostat, first drain the system, then detach the upper radiator hose at the outlet



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Fig. Fig. 2 Remove the water outlet attaching bolts ...



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Fig. Fig. 3 ... then pull the outlet from the engine



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Fig. Fig. 4 Remove the thermostat from the water outlet



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Fig. Fig. 5 Remove all traces of the old gasket and thoroughly clean the mating surfaces

  1. Partially drain the cooling system to a level slightly below the thermostat. The thermostat is at the engine end of the upper radiator hose.
  2.  
  3. Remove the upper radiator hose from the thermostat housing.
  4.  
  5. Remove the thermostat housing bolts. Remove the housing.
  6.  
  7. Remove the thermostat from the block.
  8.  
  9. To install, reverse the above steps. Use a new gasket and gasket sealer. Always place the thermostat with the temperature sensing end facing into the block. On the six, the vent hole must be up.
  10.  

 
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