99 DODGE CARAVAN WHEN HEATER IS ON WATER LEAKING FROM EVAPORATOR DRAIN TOBE

SOURCE: 2000 dodge grand caravan rear heater core tubes need replacing

a lot of pain and heart ache. even on a rack they are a pain . check with your dealer there wae a recall on them for failing its worth the phone call to see kdc744

SOURCE: 1997 Dodge Grand Caravan water leak.

It'd be under the dash, close to the middle and poking through the firewall behind the engine, usually passenger side.

SOURCE: Dodge 2000 minivan,water pump leaking

Make sure it's cool, pop the radiator cap, Remove the shield on the passenger side between the tire and front of engine. Relieve the tension on the serp belt,draw yourself a diagram of the pulleys and belt routing in case the sticker is gone on the strut tower, remove the serp belt. Take the bolts out of the pulley on the front of the water pump (3). Remove the lower radiator hose at the front cover to drain the coolant. Remove the 6 mm bolts holding the water pump to the front cover housing. tap on the pump with a rubber hammer. Install a new gasket on the new pump, and a weap hole diverter in the pump (round black about hte size of a quarter), use old one if there's no new one. Install pupm and tighten bolts snug with a 1/4" ratchet. Install pulley and 3 bolts. Install belt, top off radiator with 50/50 mix green coolant. start engine and run to operating temperature,make sure the belt is seated in all of the pulleys and is running true, radiator fans should come on. Shut engine down and let cool overnight. Check level in radiator and overflow bottle, top off as necessary.

SOURCE: Water Pump leakes from steel tube.

when installing new o-ring on tube, lubricate o-ring and stick it in water pump. Then pull pressure back on tube and then tighten hold down clamp. problem solved

SOURCE: I HAVE A 99 DODGE CARAVAN 3.3L COOLANT IS

Where is it leaking from? The radiator its self, the heater core found under the dash, or some where in between? Look for pools of coolant under the front floor mats, If you find it there, then the heater core needs to be replaced. Next time it happens, Pull over immediately and look under the car to see where it is leaking, (look from more than one angle). Or park it over some clean cardboard, where ever the stains are, will give you a clue of where to look for the problem. And most easy, Bring it back to the mechanic who installed the new radiator., Most legitimate mechanics warrant their work and yours may be responsible in some way, or at least be familiar with your particular Caravan.
The solution is to locate and fix the leak, but also perform a thouro cooling system flush. The system bay have serious dirt, clay, or corrosion that is causing issues with proper flow and pressure, thus causing leaks.
And Always Pull Over when it begins to OverHeat! Heat damage to an engine can spell Death to any Car, even Caravans. Good Luck.