Question about Cars & Trucks
Heater won't work at all unless I hit the dash what do I do
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Posted on Jan 02, 2017
If you are somewhat mechanically inclined, here is an easy way to see if your heater core is actually plugged or not. It does require that the engine is up to operating temperature, which means you should also be careful not to get burned.
Find where the heater hoses actually pass into the car. They are usually found going into the car behind the engine at the firewall. There should be two black rubber hoses, about 5/8" diameter. With the engine running at operating temperature and the heater on, both hoses should feel pretty hot. If one hose is hot and the other feels cold or lukewarm, the heater core is most likely plugged.
Posted on Jan 18, 2009
Is the fan blowing for the vents? If not the problem is a fan issue which is much more likely. The hot water usually goes through the heater core all the time and the only reason you get heat when called for is that air is directed across the fins and coils where your engine coolant is going through. Of course the heat does not come on until the engine has heat built up in it say after about 7 minutes of run time depending on ambient temperature.
Posted on Oct 01, 2012
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