Originally Posted by J-RAD
you replaced the fan switch and relay, but does the fan kick on?
does the bottom hose get hot? or just the top?
did you properly bleed the cooling system?
look like it may be the WATER PUMP then.
The fan comes on for the first 20-30 minutes and everything flows nicely but does not come on when it overheats and balloons my upper radiator hose. (because the fan switch is on the cool side of the thermostat, I think)
I bled it in my driveway at an incline and refilled as needed.
If the water pump was bad, wouldn't it overheat within the first 5-10 minutes rather than waiting?
The bottom hose gets hot but not scalding like the top one does. The bottom one can be held in your hand as long as you like but is still hot.