Question about 1994 Ford Econoline

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What does it act like when the water pump go's out will it over heat fast or will it blow whited smoke from under the hood a machanic told me he had to replace the heater core and the water pump i would think the water pump would supply the core if the pump was bad the core would not be causeing white smoke and there would be a puddle under the van where the pump is

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First check your coolant levels frequently.. if you are adding coolant/water frequently.. you have a leak.

A water pump can fail a couple ways. Bearing, seal, impeller or all of those.. if a bearing.. usually starts making noise or is hard to turn etc.. impellers can crack break or chip causing the pump to become out of balance and lose efficiency. Only a broken gasket or shaft seal will result in a leak.. a small one and if the leak drips on the exhaust or some other hot part of the motor.. it will evaporate. Again.. it doesn't have to leak to fail..

A bad heater core typically will leak inside the vehicle.. or mist the windshield with a thin film of guk..even blow whites smoke out the vents.. usually you can smell a sweetish odor.. and will find the carpet damp on the tranny hump or passenger side... in some cases even a puddle.

White smoke from under the hood.. my guess is the mechanic did a pressure test.. checked the water pump and found the pump was on it's way out.. and possibly the inlet or outlet on the heater core is cracked or breaking..leaking onto the exhaust manifold.. they usually fail at the seam.

The problem is not connected.. but like many service checks or problem solving .. upon inspection other things are found that need attention. It would be a good idea if you proceed with this service to have all hoses checked and replace as needed.. drive belt too.. a good flush and have the coolant renewed if needed.

Best of luck

Posted on Apr 02, 2011

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