Question about 2000 Ford Explorer

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2000 exsplorer overheats if heater is off

Over heats when heater is off turn on heater guage drops to normal

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  • 36 Answers

Thermostat is stuck..... try that first. Then look at radiator - may need replacement if calcium buildup is blocking vents and fins.
Radiator shop is best bet - they do this all the time. Had the same problem on an old Chevy - vents and fins were 90% blocked.
Mechanics kept replacing the GD thermostat......
Blockage in your radiator is usually from adding hard tap water to radiator or fill/overflow container.

Posted on Dec 30, 2014

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Posted on Jan 02, 2017

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SOURCE: heater does not work and overheats

Sounds like a stuck thermostat!

Posted on Jan 16, 2009

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SOURCE: ford mondeo mk3, intermitent dumping of water from

You may have an air pocket in your system which some times happens.  One way to get rid of it is to take the upper hose off on the engine side,  fill your system with water until it runs out from your engine block, replace the hose, start your car turn you heater on and set to hi keep the radiator cap loose until the temp start to rise then close tight.  Once the air pocket had been remover you can drain some of the water from the radiator using the lower drain plug and add antifreeze.   

Posted on Mar 09, 2009

01fordeb
  • 1033 Answers

SOURCE: temp guage is moving to

Your overflow cap could be your problem. The cap may no longer hold pressure like it should causing small leaks that you don't notice which will make the car run hot. Also it could be the fans not kicking on because of a bad temperature sending sensor. If these go bad, the temp switch don't know how hot the coolant is therefore it will not signal for the fans to turn on to start cooling.

Posted on Sep 07, 2010

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jlisagearhea
  • 412 Answers

SOURCE: My heater in my car

These taurus' have a notorious problem with the blend door actuator(controls hot and cold air mixture) failing.This is located in the cab of the car underneath the dash right in the center.This is not a diy project unless you have fairly extensive mechanical background.What you can check with ease though is to make sure that your coolant is full, this can cause a no heat condition.Also get your car up to normal operating temp and place your hands on the inlet and outlet if the heater core hoses, on the engine side of the firewall, and make sure both hoses are hot, if they are both hot then it is a blend door issue, if not then you have a restricted heater core, you can back flush your heater core by removing the hoses and placing a garden hose to either side and flushing it thru. I hope i could help....rate me accordingly.Thanks!!!

Posted on Oct 08, 2010

  • 213 Answers

SOURCE: get engine up to normal running temp. Turn on

see if the radiator fan is it running even when the engine is at C or at heat
if its running when its at C the thermostat is not working properly
do you keep the windows open when you are driving can be a reason
as the car has a radiator in side also which gives you the heat

Posted on Feb 07, 2011

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