[Super Bleeder!!]

well that pipe comes straight off of your water pump, so it coule be that the seal between the two went bad.

you have no heat? warm coolant isn't getting to your heater core

heat related idle issues usually seem to boil down to the FIAV in your throttle body, and wouldn't you know it, QPR knows exactly how to get rid of that nasty little device.

whens the last time you changed your thermostat?