smokey air vents

i was wondering if someone knows about this, and can help me solve this problem. i own a 92 slc/vr6 and when the temperature gets hot, i get a coolant smoke/mist out of the air vents. i thought it might be the heater core but im not sure, so i bypassed the hoses going into the fire wall, as a temporary fix. now its running from the (aux) water pump back into the top of the engine (was that a good idea?) .no more smoke for now but, i know the problem still exists. any input would be greatly appreciated.

VW heater cores are poor, bypassing is an okay fix until it gets cold outside.

VW heater cores are poor, bypassing is an okay fix until it gets cold outside.


I just wanted to say thank you for replying to my thread. I feel a lil more comfortable now. Although the weather is good here, it is still first on the list to get fixed.