Question about 1999 Buick Century

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My 1999 buick century's temp. gauge shows it to be over heating when i drive for a while, though its not over heating. we've flushed the coolant system (didn't help) and when the temp gauge shows it to be over heating and the overheating light comes on the rpm's shut down, and get really low. cause very slow acceleration and will not allow me to go over 30 or 40 mph. we've replaced the thermostat too, thinking that was the problem, but once again we were left with unsatisfying result.

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Hey, saw your posting and just wanted to ask if you found a solution to that problem because I'm having the exact same problem. I just started this morning, my gauge showed it as being in the red area so i figured it was bout to overheat. But when I would accelerate the temp gauge would start to come down to a normal level. But everytime I stop it would elevate to the red area. I havent tried the thermostat thing( it seems it didnt work for you I see) If you find a solution enlighten me at my email...Kbrodie@ci.durham.nc.us

Posted on Sep 10, 2010

  • Mike Noorman Nov 02, 2010

    Having the same problem...any solutions?

  • LaGata Mar 03, 2011

    I'am hanving the same problem you could try changeing the coolant Temperature sensor and also change the Thermostat if you havent done so already this sensor allows a signal so that your relay can turn on your fans so that the engine cools down.As you drive if your car is in fact overheating the cold and hot needle moves down only because you are getting air from outside that cools the engine off a little but if you continue to drive your car like this your headgaskets will mess up.

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