i am having some problems with my 2004 f-150 5.4. I have no heat, no ac no defrost, no heatred seats nothing at all to do with my climate control. it will turn on and blow for 10 seconds then shut off itll keep flashing on and off. i can hear a relay fuse clicking so i swapped it out and still the same thing. i recently took it to a good mechanic and he thinks it may be the computer control module? anyone heard of this problem before?
After using the 'search' tool I unhooked the negative terminal and let the truck sit for a little while. Then reattached the negative battery terminal and climate control is back to normal.
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