Question about 1995 Mercedes-Benz C-Class

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Overheating, and reving up and down at idle.

I just replaced my thermostat and two months later the car is overheating ridiculously to 110 within 5 min. of driving. Also, when I start the car is revs up and down from 5 to 20. At idle at a traffic light it shakes and revs up and down.

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  • bowman_ge460 Jul 16, 2009

    no there is no oil in the water.I can keep the car at 80-90 if I have the heat on.

  • bowman_ge460 Jul 16, 2009

    No because I am not leaking any oil and the car is fine if I unplug and plug the battery back on (reset computer). I think the O2 sensor is bad for the reving upand down thing and I think that the car over heats cause I lost a bolt to my thermostat housing when I was putting it back on. What do you guys think?

  • Isabel Nugent May 11, 2010

    do not drive a vehicle that is over heating to that extent.radiator blocked????? check temp sensor.is there oil in water?????

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  • Contributor
  • 14 Answers

You need some new head gaskets, my friend. Or you have a cracked head... either one = BIG BUCKS. bummer.

Posted on Jul 16, 2009

  • Rachel
    Rachel Jul 17, 2009

    Did you look into it at all? Apparently it's not the head gaskets because you gave me a bad rating, I'm curious to know what it is? I'm not familiar with this car but it's definately a problem with the cooling system, and a lot of cars run hot, overheat, and the obvious "Shake" when there's a problem with the intake manifold, i.e. "head gaskets" sorry if I wasn't clear. There could be other reasons for everything your car is doing, like you suggested, but if you're so sure, then why ask?

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