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check for leaks, usually wet in the interior front. do or have a pressure test done on the system, use the color dye to identify the location. If that is not the problem then that leave 2 more to try. the problem may be in the venting of the air. sometimes the vent controls don't work.(redirect the air) They can get stuck. they have three main methods of control. electical, mechanical, or vaccum. that is what i can think of for the minute. hope it helps. duboff it will leak fluid. however they can become plugged if you have failed to change your antifreeze for a long time. this would restricting the flow throw it. If your radiator is gummed up odds are the heater core is also... only check while the engines cold!
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What is the problem when the window get fogged and a sweet smell is coming from the vents?
bad heater core bad heater core
Your heater blows cold in your Lincoln?
COULD BE A BAD HEATER CORE COULD BE A BAD HEATER CORE sounds like the heater control switch needs replacing.if that doesnt fix it, you need new heater core
Bad smell coming from the heater of your 95 Jeep Cherokee what could cause it?
A bad smell coming from the heater in a vehicle can indicate a bad heater core. One way to check this out is to see if the smell is worse when you sit in the passenger seat. If it is, there is a good chance the heater core is bad.
Why does the anti-freeze leak through the vents on a 96 Chrysler lhs?
Check the heater core, it is probably bad. It could be heater hose connections to the heater core, but I would bet on the heater core going bad.
What are the signs of a bad heater core in 98 ford expedition?
The most common signs of a bad heater core are; no heat or fluid leaking into the passenger compartment. The heater core can have a leak or it can be plugged.
How do you change the heater core of a 1997 corolla and what are the symptoms of a bad heater core?
coolant on the floor
How do you know when a heater core is bad?
You know the heater core is bad when your truck leaks antifreeze onto the floor of the passenger side.
How do you know if your heater core is bad?
The first sign that a heater core is bad is the lack of heat from the blower motor on a vehicle. The second sign that a heater core is bad is water on the floor of the passenger side foot well on a vehicle.
Why no heat in cab of f350 diesel?
no heat can be caused by,blocked heater core insufficient coolant in engine blocked heater hoses from engine to heater core bad heater thermostat bad thermostat in engine bad heater control switch
1994 Camaro heater wont work?
you have a bad heater core
How do you tell if the heater core is bad?
when your feet are wet-(the core is leaking!)
Is heater core vapor bad for your health?
no, no its not
