Question about 1999 Ford F350 Regular Cab

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I have a 1999 f350 deisel i cant get the heat to blow warm or hot it only comes out cool

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OK, first make sure that both heater hoses are hot, if they are then there is a little moter in the dash called a blend door actuater it moves the blend door from hot to cold it can be a pain to change. now if you have one hot hose and one cold hose you need a heater core and it is a major job to replace it now here is were it gets a little tricky in the past 3 or 4 weeks we have had 2 ford trucks come in with no or little heat and both heater hoses were just luke warm and after replacing the heater core and still not getting any heat we found that the impeller on the water pump was rusted away it still moved just enough water to keep the truck from overheating but not enough to supply the heater core.. I hope this helps GOOD LUCK

Posted on Nov 11, 2010

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