Question about 1996 Ford Crown Victoria

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96 ford crown vic over heating

Hello,
I have a 96 crown vic that keeps over heating. I replaced the theirmustat, water pump, heater core, fan clutch, plastic plenum, and all the hose's. When I turn on the heater no heat come's out. There is know coolant leaking any were, (that I can see). The radiator is farly new. I start the car and drive about 3 miles and then the temp gauge go's from cold to over heating. I have to stop after 10 miles and let the car cool down. Does any body have any idea why. If I take the radiator cap off, when the car is hot, it bubbles and over flows. So I know it is getting hot. I just don't under stand why. The only thing I can think is that its vapor locked or clogged. The hose going in to the radiator is hot and the hose coming out is warm so I don't think it is clogged.

Thanks for your help.

Jay

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It seems you have to seperate issues here. fiirst let's start withtthe over heating. you stated that you have replaced the pump,thermosta,fan,clutch,all the hoses, and core. now my question to you is did you route the belt so it's circulating like it should? is it steaming out from under the hood? to be quite honest the vehicle should not even be close to overheating after driving only 3 miles. there is a possibilty that you have a bad sending unit for the temp if it is not steaming out from under the hood. your upper radiator hose is hot this tells you that the thermostat is operating as it should. the fan should be turning clock wise as you are looking at it from the front of the vehicle.when you fill the system with coolant make sure that you have the heater on high and to the hot setting. check to make open sure you have plenty of coolant and that the radiator is free of dirt and bugs.. now as far as not having anyheat in the vehicle check the fuse for your climate control. look under the dash and make sure you hooked all the cables for your fresh air door and blend door. when you changed the core did you connect the hoses in the right place?after you have checked all the hoses and the coolant is as full as can be and the heat is turned on to max ,keep the radiator cap off and start the vehicle wait for it to get hot check the upper radiator hose to see when the thermo stat opens you should see that the coolant should go down in the radaitor. do these things and check back with me on the results...please rate this help...thanks

Posted on Sep 22, 2008

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Check for leaks on your intake manifold. Open the hood and see if you smell coolant. Cracks will occur in the all plastic manifold or the aluminum coolant crossover could be separating from the plastic manifold. I understand this is a common issue. I had bad heat for several months then when the leak got worse, the vehicle began to overheat while the heater did not work. Check the valley under the manifold for any fliud leaks, there should not be any. You are looking for dried white flakes or antifreze.

Posted on Dec 10, 2012

  • kossjennifer
    kossjennifer Dec 10, 2012

    Check for leaks on your intake manifold. Open the hood and see if you smell coolant. Cracks will occur in the all plastic manifold or the aluminum coolant crossover could be separating from the plastic manifold. I understand this is a common issue. I had bad heat for several months then when the leak got worse, the vehicle began to overheat while the heater did not work. Check the valley under the manifold for any fliud leaks, there should not be any. You are looking for dried white flakes or antifreze.

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