Cooling fan Operation

[Bruce Plecan]

After starring at the wirez too much today, I think I saw the problem
someone was asking about.
  There are two fan temps setting in that ecm.  One is the primary
as you would expect.
   But, the secondary has several optional modes of operation.
A/C on, turns the fan on for the cooling the condener, and there
is a high pressure switch.  Then there is the thermal switch mounted in the
engine, and lastly the the ecm controlled temp option for it.
But, with nothing else triggering it, it (ie not A/C) given long enough it
should trigger on, if the primary fan can't keep up with the temp.
   Once I get the bench ecm running I'll verify this as fact, right now,
just
that's how it looks.
Cheers
Bruce