Mechanics

REAR COOLANT LEAK

1999 Ford Expedition

Engine Cooling problem
1999 Ford Expedition V8 Four Wheel Drive Automatic

1999 Expedition leaks coolant under rear heater core. Drips just behind left rear tire. Drains the cooling system. Appears to be running from an overflow tube under the vehicle, directly beneath rear heater. No broken hoses or lines. No coolant inside the vehicle. What is wrong?
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Rangeregr
September 11, 2008.



Hi there get the system pressure tested and you may find a pin hole in a hose or the heater core is the cause of your leak, start here.

Mark (mhpautos)

Mhpautos
Sep 11, 2008.
The hose your seeing is the drain for the A/C condensation drain hose. If there is coolant coming from there that usually means the heater core is bad. I'm not positive but I'm pretty sure there is a tray under the heater core on the expedition so if it does blow then your vehicle isn't filled with anti freeze.

Tiny
TurnedWrench
Sep 16, 2008.