2003 Ford Explorer thermostat

94,000 MILES • 6 CYL • 2WD • AUTOMATIC
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RORYBYORK
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  • 1 POST
while Im driving the temp. gauge goes up to the H for about 10-15 sec. and then returns to normal. this happens about every 3-5 min. I have checked the radiator fluids and they always seem a little low, so i fill them up, turn the truck on and everything runs fine. no leaks or anything until i start driving. the temp gauge goes up and i start smelling radiator fluid, so i pop the hood and the reservoir is low and there is fluid leaking under the right fender, however there is no sign of leakage anywhere on or around the reservoir or the radiator!?! My intuition tells me its the thermostat, however with the advancement of technology it could be the tire pressure that's causing it for all i know. anyway, any advice? -rory-
Oct 14, 2009 at 2:24 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
What I recommend you do is have the system pressure tested. Under pressure, it will leak and you should be able to find it. Make sure it isn't a headgasket. Have you checked the motor oil to see it there is any coolant getting into it?
Oct 26, 2009 at 1:51 AM
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