2005 Jeep Liberty 3.7L. New fan, and thermostat. Purged system of air. Filled, ran, refilled, system is full. Run at idle 30 minutes, and temp is rock steady at the mid point mark of the temp gauge. Ran it for 10 minutes at 50 mph and temp rose to the 3/4 mark. Pulled in home and checked fan and its running radiator hose at the top (engine exhaust) is hot, radiator hose at the bottom (engine intake) is air temp cold. Fan was still running. Let idle and temp came back to normal. What is going on?
New fan, and thermostat. Purged system of air. Filled, ran, refilled, system is
full. Run at idle 30 minutes, and temp is rock steady at the mid point mark of
the temp gauge. Ran it for 10 minutes at 50 mph and temp rose to the 3/4
mark. Pulled in home and checked fan and its running radiator hose at the
top (engine exhaust) is hot, radiator hose at the bottom (engine intake) is air
temp cold. Fan was still running. Let idle and temp came back to normal.
What is going on?