1988 Plymouth Voyager Thermostat

1988 PLYMOUTH VOYAGER
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PORTLANDPETE
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  • 1 POST
Engine Cooling problem
1988 Plymouth Voyager 6 cyl Two Wheel Drive Manual 190k miles

Van often overheats. When the engine overheats the heater also does not work. I think it is the thermostat. How do I change it?
Mar 23, 2009 at 8:50 PM
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EUGENE123
  • ✓ASE Certified Mechanic
  • 273 POSTS
  • ASE Certified Mechanic
Drain the cooling system to a level below the thermostat.
Remove the hoses from the thermostat housing.
Remove the thermostat housing.
Remove the thermostat and discard the gasket. Clean the gasket surfaces thoroughly.
install new gasket On 3.0L, 3.3L and 3.8L engines position thermostat in water box pocket. Make sure thermostat flange in seated properly in flange groove of the water box. Position the new gasket on water box and install housing. Tighten the bolts to 15 ft. lbs. (20 Nm).
Connect the radiator hose to the thermostat housing. Tighten the hose clamp to 35 inch lbs. (4 Nm).
Fill the cooling system.
Mar 23, 2009 at 8:54 PM
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