2000 Camry Idling Hot - Toyota Nation Forum : Toyota Car and Truck Forums

tdla · 01-14-2009, 11:33 PM

My 2000 camry 4 cylinder coolant temp gauge will read pretty high (3/4 of max) when vehicle is allowed to idle for very long. Yesterday it was doing this at 40 degrees F ambient. If I rev the engine up to a steady 1500 rpm or so, the coolant temp immediately begins to return to normal. Same thing if I put it in gear and drive away. Any ideas, anyone?

Tony

my name is joe · 01-15-2009, 12:12 AM

i just fixed this problem today. is the fan behind the radiator working? it should turn on and off by itself once in a while when the engine is too hot. check your coolant and everything that goes to the radiator(pipes, tubes)

BamZipPow · 01-15-2009, 01:54 AM

Sounds like yer coolant might be low.

trdcamry00 · 01-15-2009, 02:46 AM

Check to see if your thermostat is working and if your fans turn on. If it overheats on you while you're driving turn up the heater.

MrSo0h0o · 01-15-2009, 07:26 AM

This may also be caused by a crack in your radiator. Check for coolant leaks or any possible failure spot on your radiator.

tdla · 01-15-2009, 11:39 AM

I forgot to mention that the coolant level is good.

If the radiator fan were the problem, then I can't see how revving the engine while the vehicle is stationary would make the coolant temp come back down, as the fan is thermostatically controlled/electric.

There is no coolant leak anywhere. I'm am beginning to wonder if perhaps the water pump has a bad impeller, i.e. missing a blade or blades. Has anyone see this happen before?

Tony

my name is joe · 01-25-2009, 06:53 PM

my problem was that the switch. not sure which one. was broken. check your fuses too. i dont think it would be the problem. bring it to a mechanic if anything.