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Re: 1995 Crown Vic. Heater blowing cold air
They radiator flush has created a blockage in the heater core that creates the heat. you dont want to replace this part because it can get $$$$. i would take it back to the shop and have them try the service again( at no charge) to see if it can remove the block
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ok so the heater draws heat from the engine and if the engine dose not heat up anuff it will only blow cold air the reason the engine may not be getting worm is because the thermostat may be stuck open
I would change the Thermostat. if that doesn't fix it? I would buy a Radiator flush and follow the directions exactly you will be surprised how much junk comes out. That should fix all your heat problems.
two things that I have seen cause that problem is the blend door get stuck or stop working and the Heater Control Valve go bad and stop the hot coolent from going to the heater core. I hope this info helps
Take cap off rad when cool enough to do so. Start the car with cap off & heater turned on,(not defrost) and let it run for a while, as in wait for rad fan to come on 2 or 3 times. Add coolant/mix as needed while doing so. My guess is that you have an air lock in cooling/heating system that hasn't been bled out yet. Once in a while just rev engine a little, for about 30-second to 1 minute to increase flow through system, to help bleed & circulation. You should start to feel heat coming. Only put rad cap back on after rad fan has come on after 2nd or 3rd time. Check return bottle & fill it to mark as specified. If that doesn't do it, take it back to guy who flushed it, he should know what he did wrong.
i had the same problem with my 2000 chevy truck!! i took both hoses off engine and flushed the heater core with water and air frome air compresser,added new coolent and it works perfect!!!! so try flushing your system............