Ford Focus
Thermostats
Water Pumps
Ford Escape XLT

What is wrong if you have changed the thermostat and water pump on a 2001 Focus ZTS and it still leaks antifreeze?

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Wiki User
2005-11-23 15:04:31
2005-11-23 15:04:31

If it heated up on you, chances are that you warped the cylinder head and now have a blown gasket. You don't give very much information, here.

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Oil/antifreeze mix is usually caused by head gasket leaks or valve cover gasket leaks.

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If you didn't get it warm after the work and then refill the tank - the system was probably closed when you filled it. It's possible once the thermostat opened (or just as the coolant leaked past), the fill you gave was used as it filled the system past that point.

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First thing you should check is the antifreeze level. If that is fine, replace the thermostat. If it still over heats after the thermostat, then most likely you need to replace the waterpump. If your antifreeze is low, check for leaks, the radiator, hoses, heater core, and water pump. If the water pump is leaking, that is your problem, replace that and thermostat all in one.

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Hoses? Intake manifold? Heater? Thermostat housing? Freeze plugs? Radiator? Pressure test system to help find

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smell of antifreeze and no visable leaks usually indicates that the heater core needs replacing

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have you flushed your radiator or changed the thermostat it could be stuck

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let some antifreeze out,remove two bolts holding thermostat cover on,its located on the end of top of radiator hose.remove thermostat ,remember how it goes back in,scrap old gasket off and wipe down,then apply a coat of silicone on thermostat cover and intake and set your gasket on and place your new thermostat on after checking in 180 degree water to see if it opens and closes.put cover on and screw two bolts back on and add antifreeze,crank and check for leaks.

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drain some of your antifreeze and disconnect your top radiator hose from cover,then remove 2 bolts holding cover on,remove thermostat and clean gasket off both surfaces,check new thermostat to see if it opens at 180 degrees,then apply sealent to both surfaces and install gasket and thermostat and 2 bolts and tighten and put hose back on and tighten clamp and add antifreeze,then crank and check for leaks.

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A thermostat that is stuck in the closed position is a very common cause of overheating. A new thermostat should be installed every time the coolant is changed.

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Bad head gasket or... Crack in exhaust port in head. Check exhaust for presence of antifreeze smell or exhaust gas in radiator.

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Cooling fan could be faulty or radiator could be clogged or have slight leaks in it .

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Find where it is running out and repair the cause.

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Could be the intake manifold gaskets are leaking.

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Yes. Antifreeze is actually pumped through the intake manifold. If the gasket is bad it is possible that it leaks out

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Causes of over heating: insufficient coolant; antifreeze/water mixture not correct; thermostat stuck in closed position; faulty water pump; clogged/dirty radiator; leaks in the system.

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Hi there, if you have flushed any engine and have changed thermostate there are only two options that are left; (providing that there are no leaks) 1. the thermostat is faulty / 2. your water pump is broken and needs to be replaced

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Might just be a head gasket. If not the Blocks Cracked. Bad.

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Pressure test system t determine where leak originates

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Yes. If a water pump is leaking, it leaks anti freeze. Anti freeze, (coolant) can also leak from the radiator, or from water hoses.


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