Today i noticed that my four wheel drive would not engage into four hi or four low. It only did this after i flushed out my heater core with water today and after i did that only my defrost vents would blow air even when i changed the dial to one of the other vents. Also my four wheel drive will only engage when the blower motor for the heater is turned off. I'm not sure if this is a coincidence or not but i am suspecting that i might have some kind of vacuum leak that could be causing both of these problem.
If anyone has any idea what could be causing these problems and how to fix it please let me know. thanks
If anyone has any idea what could be causing these problems and how to fix it please let me know. thanks