Question about 2006 Chevrolet Cobalt

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High temperture The temperture readout has reached as high as 214 degrees when idling and the fan does not come on only if i turn the ac on or recirulation button. I have changed out the temperture sensor, relay and the installed a new fan/shroud. Does not read hot when running down the road only when idling, what could be the problem?

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  • mnj1017 May 30, 2008

    I changed out the thermostat and still having the same problem.

  • mnj1017 May 30, 2008

    I have changed out the fan shourd which is all one unit and had the radiator flushed and still the same problem.

  • mnj1017 May 30, 2008

    I tried removing the battery wires for ten minutes and still same problem. So i took it to the chevy dealer and had the computer reprogramed the mechanic said that the fan would come on now so i ask him what temp the fan came on he said that at 221 degrees and it will cool down to 189 degrees.

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Could be fan clutch or clogged radiator. You might want to have your radiator flushed.

Posted on May 27, 2008

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The electric control of the fan is not set properly on the car you need to set, try remove the battery wires for 10 minutes and then connect it, if face the same problem again get it checked from the dealer ,it may be small as a fuse blow out to big as a computer failure.




good luck................

Posted on May 27, 2008

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Have you check the thermostat?
You might want to remove it and install a new one see it still overheats.

Posted on May 27, 2008

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