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 Mercury Milan
7 people reported this problem
4 people shared problem details
2007 Mercury Milan86,000Visitor
The front passanger side floor is wet on my Mercury Milan.I was told by a couple of friends it was the heater core. How much does the work cost for this job??
2006 Mercury Milan105,000Visitor
Drain line clear, but water leaks under carpet on passenger side of car.
When in the car! I smell coolant in the cab of the car. What could be the cause of this and how do I find out where it's coming from
2006 Mercury Milan93,765Visitor
The electrolysis problem would not occcur if the heater core were thermoplastic. RIDICULOUSLY SIMPLE TO PREVENT. I had the same problem with a 96 and a 97 Grand Am. I smelled the antifreeze and had to add coolant to them. GM had metal hose ends to a thermoplastic body. The hose ends corroded. I can't believe that the instrument panel/dash board of this Milan must come out to replace the heater core. RIDICULOUS!
turned wipers on after warmed up a little and the moved like and inch and made weird noise now that let car warm for awhile the drivers side wiper moves/works and passenger side does not and when touch it can feel it trying to turn
went to go start my car this morning and turned wipers on after warmed up a little and the move...
I can open the door using the little lock lever, but the driver side door does not lock either...
drivers side taillight not working
Even dialing "max cool", the temp is barely cool. A possible leak, or is blockage more likely?...
My heater stopped blowing out ..then friend said something came undone under dash passenger sid...