Genuine Ford Ranger Thermostat

Ford Ranger Thermostat Parts Questions & Answers

• Thermostat Assembly
  2L2Z-8575-AA
  Q: How to replace a thermostat in a cooling system on 1993-2011 Ford Ranger?

  A: Check the coolant level, drive belt tension, and temperature gauge to diagnose cooling system problems. If the engine takes too long to warm up, replace the thermostat. If the engine overheats, feel the upper radiator hose, if not hot, replace the thermostat. Never run an engine without a thermostat since it damages computers, emissions, and fuel economy. Assessing the upper radiator hose temperature aids in confirming whether or not a thermostat is open. Disconnect the battery cables before removing the air cleaner duct and draining the cooling system. Also, locate and disconnect electrical connectors at the thermostat housing, remove a hose from it, take out a housing cover and see how the thermostat is positioned.
• Thermostat Assembly
  1S7Z-8575-AG
  Q: How to replace a thermostat in a cooling system on 2000-2011 Ford Ranger?

  A: Before you assume the problem in your cooling system is the thermostat, check other things including checking the coolant level, drive belt tension, and temperature gauge operation. You must not run your vehicle without a thermostat so that your computer can work well and it will not have any negative effects on emissions or fuel economy. Disconnect the negative battery cable to replace the thermostat. Remove air cleaner air ducts and drain cooling systems. Look for an upper or lower Radiator hose to locate thermostat housing. If there are any electrical connectors present disconnect them. In some engines, both housing and thermostat are serviced as one piece. Free hose from fitting, also cut off old or deteriorated ones when necessary and replace them with new hoses if possible.