Electrolysis can cause repeated failures of the heater core and radiator. The diagnosing technician should check for voltage present in the coolant, with the battery disconnected, because electrical current in the coolant causes electrolysis. Corroded or deteriorated parts should be replaced, and the coolant should be flushed. Ground straps can be added to help prevent future corrosion of components.
Coolant Leakage from Heater Core, Possible Leakage onto Passenger Side Foot Well on Ford E-150
Average mileage: 115,963 (52,000–158,000)
28 people reported this problem
4 people shared problem details
1993 Ford E-150154,000Visitor
Leaking coolant out from tire well drivers side does any one know how to bypass rear heater lines
1990 Ford E-15052,000Visitor
Water, antifreeze is leaking out when i drive. When i stop steam is coming from the rear passenger side behind the tire somewhere. I have to put in 3 gallons of water every 8 miles or so.Over heats. But my 1990 E150 van starts right up even on the coldest days.
1990 Ford E-15079,000Visitor
replaced heater core two years ago, now leaking again
1999 Ford E-150125,000Visitor
Leaking heater core
how do i replace my heater core in my 1990 ford E150 conversion van 5.0 mustang motor it has 10...
Rear unit has a vacuum operated valve in the heater hose to rear unit. Outside or inside air wo...
Club Wagon with auxillary (rear) heat. Heat not working. A/C is good Tried removing the heate...
I have changed the thermostat,heater hoses are hot and in good condition. I have a blend door s...
the rear heater hoses broke so we replaced them but now it just blows cold air. what is wrong?...