I have a 1999 Dodge Ram 1500 4x4 and everytime we turn on the heater, the trucks cab fills up with, what smells like, coolant vapor (and you can see the "smoke" coming through the vents.) Plus the vapor foggs up the windows and it won't come clean no matter what we wash it with. And to make matters worse, the fan now only works on high. What do I do?
Most likely you have a leaking heater core, or a leak at the hose connection at the heater core. Proliance brand cores run 45-50.00 and the part number is 398313. If you fan only runs on high, the motor resister is probably defective. They cost around 45.00 and the AC Delco part number is C1112. When you are doing your repairs you will probably want to replace the cabin air filter also. The ac delco part number is ACA1166C. These numbers are assuming you have the 318 engine. A good ammonia based window cleaner should do the trick for removing the antifreeze film on the glass. If not, try vinegar- stinks though. Hope this helps. Marvin.
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