Question about Dodge Grand Caravan

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I have a dodge grand caravan with a 3.3L engine and it keeps bursting my raidiator,i've replaced it three times in a short period of time,and it does not have a thermostat. hope u can help me.thanks!

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If your blowing radiator up you have a coolant issue. The only way to blow a radiator up is for it to be building way to much pressure. The only way to get that much pressure is the engine running way to hot. I would suggest trouble shooting the coolant system. Make sure water is getting thru the entire engine by putting a water hose in the upper radiator hose and see if you get water out of the upper radiator inlet.

I would also check to see if the fans are coming on. If you have 1 fan it should come on when the vehicle hits about 205 degrees. If you have 2 fans one will do what i already said and the other will come on when you turn the ac on.

If you find no issue so far then the water pump is probably bad or the coolant lines themselves are bad. You can check the coolant line by running the vehicle. When it starts to heat up if the hose is bad it will start to collapse. Also make sure your radiator cap is the right pressure for the vehicle and that it is actually good. Its easier to just buy a new for 5 bucks and be done with it. You should replace those caps every 30 k miles regardless.

Remember a coolant system keep coolant from boiling by allowing pressure to build. If the system is not allowed to build pressure then the vehcile will over heat and if it gets bad it will blow a radiator apart.

Posted on Apr 06, 2011

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