Quote:
Originally posted by CJFusco
Where are the outlets for flushing? Are they in the engine bay, on the "easy" side of the firewall?
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Well, I have no idea what car we are talking about so this advice is general. Yes, there are heater hoses that come from the engine bay to the heater core. They generally pass through the firewall at some point, since that is where the average heater core lives. Disconnect both of these hoses at a convenient point and run water through them. Run a flush chemical through them if you want; you can get some at any parts store. I'd flush it backwards; run the water into the output hose from the heater care. If you don't know which is which, two minutes Googling the internet ought to cough up a little help.
Of course, this may not be the problem. If you have a car that runs heated water through the core at all times and regulates the temperature by blending warm and cool air, you may have a problem with the other parts of the system.
JR