Question about 1997 Volkswagen Jetta

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Water comming pushibg back through overflow

When it warms up water pushing back through overflow but gauge doesnt show hot i have to put a gallon of water in it every day

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1) With the radiator cap off, start the engine and place the palm of your hand where the radiator cap was. If within a minute you feel pressure building you have combustion gases getting into the cooling system causing the problem. (Head gasket, cracked head and/or block).

2) Radiator cap can cause coolant to excape, pressure test the cap to see if it is releasing at the desired setting or just replace it if you cannot have it tested.

3) Check your thermostat, this can be done by placing the thermostat in a pot of water on the stove with a thermometer. when the water reaches the temperature written on the thermostat it should open, If not replace it.

Find the answer to these questions and we can go farther with what is causing the problem.

Good Luck

Posted on Nov 24, 2008

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1 Answer

Overheating


it could very well be a bad gauge. when it shows the engine to be overheated or at the least very hot, check the actual temp at the water outlet where the upper radiator hose attaches to the engine. use a non contact thermometer to check the temp so as not to get burned in the process. if the thermometer reads way different than the gauge, the gauge is bad.

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Tip

Flush the coolant on the 2002 tundra


PROCEDURE TO FLUSH
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  • Twist the radiator cap one full turn, pause for a few seconds and then fully remove the cap. You want to pause to relieve any internal pressure inside the radiator. Opening a pressurized or hot radiator can cause it to spew hot coolant and burn anyone it comes into contact with.
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  • Put the drain bucket back under the radiator and close the drain plug. Then, fill the radiator with distilled water. Next, open the drain plug to let the water flow into the bucket. Replicate this procedure until the water runs debris free out the radiator.
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  • Start the engine of the Tundra and turn the heating fan to high. Allow it to run until the cooling fan turns on two separate times.
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WARNING
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on Mar 17, 2010 | Toyota Tundra Cars & Trucks

1 Answer

How do i put water in my radiator?


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