How do I replace a thermostat in a 1999 Ford Explorer SUV?

Bill

• 424 Answers
• Posted on Jan 26, 2009

SOURCE: Temperature Control not working on 1999 Ford Explorer

Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

SOURCE: changed out thermostat on 02 mitshibu montero

check the lower radiator hose it may be collapsing at high engine speed

SOURCE: Temperature gauge almost redlining

What engine does your Ram have? This could be an indicator of a bad head gasket. If the sensor for the gauge is truly bad, the only way test that theory is to install an aftermarket gauge, use an infrared temp sensor on the water outlet hose or replace the coolant temperature sensor. If this doesn't help, you may need to take it to a mechanic and have them do a leakdown test. Failed headgasket can cause bizarre overheating issues. Good luck.

SOURCE: 2001 suzuki swift - thermostat replace?

Suzuki thermostats, more often than not, tend to fail OPEN when they have been overheated - which is a good thing! If they failed shut, you would really cook the motor. Change the thermostat. Also, find the cause of the initial lack of coolant.

SOURCE: The temperature gauge on my 1999 Dodge Ram 1500 is

Check the gauge by holding in the trip odometer reset button and turn key to run,hold button for 10 seconds this will iniate a diagnostics on all the gauges,and lights if gauge doesn't move during this test replace gauge,if it does move then check the wires on the plug at the engine coolant temp sensor (ects) you can check the sensor by using a ohms meter by unpplugging it and check ohm's or resistance when cold and then start engine as the engine warms up the ohm's reading should gradually lower as the sensor is a thermister and as it warms up the resistance will drop.