Question about 1996 Ford Bronco
I changed out the thermostat last summer....now the heater is cold....is there any valves or switches i need to check?
Sounds like the thermstat may be installed wrong or stuck open. If your engine temp is low (on the dash) then this is the case. If the engine is running at a normal temp, then you hear core is full of crap, and will need to be replaced.
Posted on Feb 14, 2013
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Posted on Jan 02, 2017
guys have you checked for a vaccum leak????? there is a little plastic ball with a vaccum line going to it that controls the outside air coming in. check for a leak in this line
Posted on Jan 08, 2009
first check and see if it has a thermstat installed or stuck open, second, make sure that your heater has not been bypassed by connecting the two hoses together
Posted on Apr 12, 2009
The heater core is possibly blocked or the temperature adjuster is not working.
First check the controls to be certain that the temperature aduster is working and the flaps/doors that direct the flow of hot air are working.
If they are..........
Check heater hose temp. If one is hot and one is cold, you are not getting flow through the heater core.
Bleed it to remove an air blockage.
If that does not work, flush the system.
If that does not work, replace the heater core.
Karl at topgunwon.com
Posted on Feb 18, 2010
Not an expert by any means, but i know my ranger.. I had a small leak at the top of my radiator that still cooled the engine but didnt have enough pressure to get to the heater. The heater hoses travel up over the engine and just were not gettin anything to my heater core. That or make sure the heater control valve is operating.
Posted on Apr 16, 2010
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Nov 15, 2016 | Cars & Trucks
Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car. Always have this problem confirmed by a dealer or
qualified repair shop as it is a very expensive repair.
Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.
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