MADMAN

iTrader: (1)

Here the deal... few weeks my car overheated. the radiator cracked so I order a new and change the thermostat. I let the car idle for a hour to mush sure everything was alright. Now a few days ago Im having the same problem. do anyone have any idea what is wrong? thanks for your help.

AznWontonboy

never had the problem. what did you do to cause it to overheat?

vmok

Could be a water pump as well. If the water pump is weak, the water won't properly circulate through the system. Did you change the radiator cap? The radiator cap holds pressure to raise the boiling point. When you say that it overheats, is it indicating on the temp gauge that it's running hot? Is the coolant boiling over?

-V

MADMAN

iTrader: (1)

Well the first time the water boil over and crack the radiator. the next time I notice the temp guage was running hot. I did not change the cap. I figure it was still good. The only time this happens is when the car is idling.

sinewave

How many miles do you have on the car?

Make sure that both of the fans are operating properly. They are thermostatically controlled, but they should come on as soon as you turn on the a/c.

I would also check the water pump. Remove the radiator cap (cold) and then run the engine until it gets up to operating temp. Once the thermostat opens up, you should be able to see water circulating in the filler neck.

MADMAN

iTrader: (1)

Right now Im touching 119000 miles, Im going to try that this weekend and post the results.

dch95

Sounds as if the fan is not coming on to cool the radiator. When you are driving, the wind coming across the radiator is sufficient to cool the radiator. If the water pump was not working, the car would overheat whether you are standing still or driving.

MADMAN

iTrader: (1)

Well I did some trouble shooting on Sat. The water pump works fine. I thought the fan was okay until the temp gauge started going up so I lift up the hood and notice the fan wasnt running. So i think the relay switch is kaput. can someone confimn this?

sinewave

I don't think we can determine what component in the circuit is bad without being there. You really need to get a volt-ohm meter and test each part. I wouldn't jump to any more conclusions; with 119K miles, it could very well be the fan motor.

MADMAN

iTrader: (1)

Ill get it check out

dch95

When you switch on the A/C does the fan kick on then? If so the temperature sensor controling the fan is bad.

sinewave

Good Idea, why didn't I think of it!?

MADMAN

iTrader: (1)

hmmm when i check the fan did not come on. Im going to check again tonight to be sure.

MADMAN

iTrader: (1)

Seems to me the problem lies with the fans so im going to have to get them check out.