Question about 2001 Honda Civic

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A week ago, Pep Boys did a radiator flush for my Honda 2001 Civic LX. I just noticed today that my temperature gauge shot up all the way to the red mark after 1 hour of driving. By the way, this is an ON AGAIN, OFF AGAIN problem. Expert advice received from this forum indicates it could be a engine head gasket leak problem or just a bad (sticky) thermostat. Pep Boys offers a Coolant System Check for $35. Will that test be able to [[ accurately ]] detect whether it is a thermostat or head gasket problem? If so, can anyone tell me what a [[reasonable]] price estimate would be for a head gasket job if that were the case?

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  • chairman562 Oct 08, 2009

    thanks

  • chairman562 Oct 08, 2009

    When you say the "coolant sensor", are you referring to the "thermostat"?

  • chairman562 Oct 08, 2009

    By the way, here is a link to my first posting regarding this problem:

    http://www.fixya.com/ThreadAskerGS.aspx?...






  • chairman562 Oct 08, 2009

    Thanks a million. Much better informed to make a rational and cost-effective decision.

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If you put this together with the fact that you just had a radiator flush and then you develop a 'heating' problem, doesn't that sound a bit too coincidental? I think the coolant sensor is the culprit here. It's either fouled or going foul if you ask me. On a gain then off? If the engine were actually in the red, you would smell it. Did you stop and check things out when it shot up to red line? The sensor controls the gauge....??

Posted on Oct 08, 2009

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  • Craig Butler
    Craig Butler Oct 08, 2009

    If you put this together with the fact that you just had a radiator
    flush and then you develop a 'heating' problem, doesn't that sound a
    bit too coincidental? I think the coolant sensor is the culprit here.
    It's either fouled or going foul if you ask me. On again then off
    again? If the engine were actually in the red, you would smell it or
    see it steaming. Did you stop and check things out when it shot up to
    red line? The sensor controls the gauge....??

  • Craig Butler
    Craig Butler Oct 08, 2009

    No, the engine thermostat opens and closes to allow the coolant out to circulate to the radiator for cooling. The 'sensor' tells the temp gauge the engine (coolant/ water) temperature.

  • Craig Butler
    Craig Butler Oct 08, 2009

    During the flush they did they may have disturbed the sensor on the radiator.

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Sorry the test that Pep boys is going to do will not tell you if it is the thermostat or the head gasket. If I were you I would replace the thermostat sense it is easy to replace (cost should be around $35). Now for the head gasket if it is the head gasket depends on what is on the car as in AC,power steering, etc, etc. It can cost anywhere from $200.00 to $500.00


Hope this help you.

Good Luck

Posted on Oct 08, 2009

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