Quote:
Originally Posted by Dee8go
It seems logical to me to think that sometimes replacing one unit of several in a system might put additional stress on the remaining parts, thus causing them to fail, too.
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No. The coils have nothing in common with each other ( aside from the age factor ).
I believe Ford and some others have had quite a few problems with coils.
For the price of them, replace one-at-a time.
