Question about 1996 Ford F150 Regular Cab

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My heater not working, i replaced thermostat and radiator hoses, had radiator flushed and rodded, and still no heat. What is wrong?

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Too much blockage in heater hoses or heater core.
Bypass valve may be stuck on "bypass" .

1. Remove bypass "Tees", but don't discard.
Replace with straight-through hose fittings.
The core may start leaking under the water pressure since there is no bypass hose.

Once the heater starts working, put Tees back in place. You need bypass protection or the engine will overheat.

Posted on Sep 25, 2009

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What is/was the condition of the coolant.?? rusty?? did they flush the heater core? make sure heater core can flow water, you can use a water hose and ck for that.

Posted on Sep 25, 2009

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99 ford contour gauge shows running hot. Change both sensors near thermostat and the thermostat. Flushed system and burped it. Ac or heat makes no difference. Fans seems to be working. Any ideas?


Is it ACTUALLY overheating? Check for heat at the top and bottom radiator hoses, and at both heater core hoses. If one is cold then your radiator or your heater core may be plugged and in need of a individual flush.

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