Heating AC and Engine Cooling

Why would a 1995 Ford 3.0 engine run so cool and not create heat for the heater and not build pressure?


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Wiki User
2005-02-27 13:35:33
2005-02-27 13:35:33

Open the radiator cap, rev the engine and at the same time check to see if the radiator is flowing. if so, thermostat is probably stuck open. I'm having the same problem. I boiled the thermostat and it worked as it should at the proper temps. Could the water pump impeller be loose from the shaft? My car doesn't run hot, but I just bought it and have only ran the engine at temps below freezing. Could an air intake door to the heater be stuck open? Thanks.


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Leaks can be caused by all kinds of things:Sediment in the water heater can cause the pipes and pipe fittings to erode or can build up around the pressure relief valve and cause a leak thereExcessive pressure can build up in the tank, tripping said pressure relief valveDrain valve can loosen and water can leak out from there

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Sludge in an engine is cause by poor maintenance. Air and contaminants build up over time to create a thick sludge throughout the engine.

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Its a long way from the tail pipe to the engine but I have seen mice build their nest inside mufflers and create a blockage.

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One word... CORROSION. Antifreeze contains anti-corrosion compounds to protect the cooling system. Without it, your system will start to build up rust inside the cooling system which can clog your heater core or radiator, and can create hot spots in the engine.

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Check your gas cap. If the tank does not build pressure, it trips a sensor and the check engine light will come on. The gas smell is the fumes that should have created the pressure.

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