Question about 2002 Ford Taurus

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2002 ford taurus. Radiator overflows but, temp gauge not hot.

I have a 2002 ford taurus. 3 months ago radiator fluid was leaking out of the overflow reservoir. The problem was the plastic overflow reservoir had a split under the bottom. This is a 16 psi pressurized reservoir. I replaced the reservoir.
Today after a long trip there is water overflowing out of the reservoir again but, I don't know if the reservoir is split again. The temperature gauge on the dash doesn't go above the mid-range to indicate overheating.

The vehicle has 130,000 miles and has the original thermostat and waterpump.

What should I check. If the reservoir is split again is it likely to be a defective reservoir or could to much pressure cause it to pop?

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It could be both your thermostat and water pump, it could also be an air lock in your cooling system. One way or another, I think pressure is building up in part of the system because its not circulating properly.

When its cool, take the top off your reservoir, give the bottom hose to your radiator a good few squeezes, see if the water goes down a little, if it does, you moved something on and probably cured it.

If not, run the engine up, to get it warm and bleed off any air in the system. (Assuming there are bleed taps in the system)

If that also does nothing, I reckon its your water pump. And if your changing that, I'd suggest changing the thermostat at the same time.

Posted on Jul 19, 2010

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