Fan does not speed up when AC is on, is this could be the source of overheating problem?
Hi, i have ford explorer 2006 4L XLT car and recently i noticed overheating
problem mainly on freeway with AC on. My mechanic changed the thermostat
and coolant but still i get the problem. I noticed the cooling fan turns on on
cold start and does not speed up when i turn the AC on, is this normal or how
does exactly this mechanism work?