Heater core will usually leak. Check the floor under the dash & near the firewall. You will smell anti-freeze/ coolant inside your truck/car. Inside windshield will fog up & there will be an oily film on the glass. On some cars there is a drain tube that goes out thru the firewall to keep the coolant from leaking inside ( 95 Gran AM GT for one) Look for that tube near the heater hoses at the firewall in the engine compartment but make sure the coolant is coming from the drain hose & not the heater hoses
bad heater core bad heater core
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
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.
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.
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.
coolant on the floor
You know the heater core is bad when your truck leaks antifreeze onto the floor of the passenger side.
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.
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
you have a bad heater core
no, no its not
when your feet are wet-(the core is leaking!)