I been trying to figure whats wrong and Im completely stuck. I have a 97 tacoma v6. It has a new radiator, new water pump, new thermostat, new fan clutch and a new timing belt. A new temp sensor too. I also did a leak down test on ech cylinder so its not the head gasket because it passed.
I turn on the truck and it heats up to its pint. After 15 mins, it starts going up more than the normal temp. Its holding the whole pressure and there is no boiling in the radiator neither. If I turn on the heater, the temp gauge stays in the middle but as soon as i put it on D and take off, it starts going up.
I also did a flush and also took off the thermostat and it did not overheat but the revs were pretty hicg. As soon as i put it on, the heat starts going up. I changed the thermostat 3 times already and one of them was a oem and still, same problem. What i notced is that theres is poor circulation but what can it be?