Why is my 2000 Camry over heating?

Asked by Mar 23, 2017 at 12:11 PM about the 2000 Toyota Camry

Question type: Maintenance & Repair

I have replaced the thermostat , timing belt , water pump ,the temperature
sensor on the gooseneck next to the gauge sensor and the switch for the
fans.  The fans do work but they do not turn on. I loosened the temperature
sending unit to try to release the air and it is still overheating with no signs
of anti-freeze only steam releases. the heater inside to car is blowing cold
air.
The water is hot in the radiator.

1 Answer

27,065

Fans are not turning on - 1) check engine coolant temperature sensor (not temperature sending unit which is for dash display only). 2) engine control module. No coolant flow - 1) check for plugged radiator (lower rad hose may feel like it's collapsing). 2) check all radiator hoses and heater hoses for pressure and hot. 3) water pump (even tho it's new, check it's working). 4) check heater hose AC shutoff valve is open (it only closes when AC is on max). 5) the big one - check no air is trapped in cooling system, bleed it and bleed it again. --- you seem to have two problems - no coolant flow and cooling fans not turning on. If sensor and fans are working, then that leaves ECU. No flow is a separate problem, it's going to be trapped air, bad water pump, or a blockage somewhere.

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