mustang93gt

i have no heat in my 93GT, if i hook up the heater core and all the hoses it starts blowing alot of water out the tail pipes. unhook the heater core and no water comes out the pipes and it runs just fine. anyone got any ideas, i was thinking it may be a cracked upper or lower intake manifold but i was thinking it wouldnt run to well with a cracked intake. im at a lose, any help would be greatly appreciated. thanks in advance!

mjr46

if your unhooking the heater core hoses at the firewall the correlation you draw has none!!...unless the heater core is leaking and dumping it out the vent onto exhaust but that still wouldn't explain the issue you say you have ..does it overheat and are you loosing coolant??

capri debris

What you're saying is like saying, "When I unhookthe battery, my tires go flat."

One thing has nothing to do with the other.

Hook up the heater and get it working properly. Don't worry about the water coming out the tailpipes unless you keep running low on coolant.

If you have to add coolant every so often, then something's wrong in the engine that's letting it burn the coolant.

The heater core being hooked up has nothing to do with what comes out the tailpipes.