Electrolysis, stray voltage, bad grounds, the "Big 3" and more...

[Steve McKellop]

Here's a very interesting article on the other forum that I thought was worth posting here. Whether or not you do the electrical "tests" it a simple safeguard against the issue of electrolysis and heater core block corrosion problems.

 

[Steve McKellop]

The corresponding TSB is in my library.

 

[scott degroot]

For some reaon this problem has plagued Ford trucks more than any other vehicles I have ever worked on