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fran07
fran07 1/31/2013
1995 Buick Century Custom 6Cyl3.1L - Engine
The temperature in my 95 buick century keeps going up to the overheat then back down to normal temperature. Any ideas?
I have already replaced the thermostat, temperature sensor and the water pump.
1 Answer
  • CVO
    CVO 1/31/2013
    Air pockets trapped in the cooling system can cause the engine to overheat. Some cooling systems have air bleed valves built into the system to aid in the removal of air pockets.

    Advice: For many cooling systems, the method of removing air pockets is to start the engine and allow it to run with the radiator cap off or loose until all the air escapes from the neck of the radiator. For some systems this method is not sufficient, and the manufacturer has installed air bleed valves usually near or on the thermostat housing.
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