prize for the right answer TEMPERTURE FLUCTUATIONS 0N 95 CIVIC-

Discussion in 'Civic' started by r, Aug 14, 2004.

  1. r

    r Guest

    I have a 1995 Civic. I've noticed that recently, the temperture gauge goes
    from just under half way to sometimes 3/4 while I am driving. It goes up
    for a few minutes then goes back down again. This cycle continues
    throughout the driving and usually starts about 20 minutes into the drive.

    I had the cooling system pressure tested and the radiator's flow checked
    and all seems to be fine.

    What could this be? Could the thermostat be going?

    Thank you all in advance!
    r, Aug 14, 2004
  2. Since there is apparently no head gasket or coolant level issues, the
    thermostat is sticking in the open position.

    Stewart DIBBS
    Stewart DIBBS, Aug 14, 2004
  3. r

    Tony Thomas Guest

    Change the thermostat. It is not operating properly.
    Tony Thomas, Aug 14, 2004
  4. r

    RMoore Guest

    Your cooling fans are not working as should be. The two fans come on
    independent of each other. The same thing happened to me a while back.
    There is a heat sensor/relay that needs to be replaced.
    Question-Does both fans come on when you turn on the AC??
    Start with cool car
    Open hood
    start motor
    observe fans
    turn on AC
    both fans should be on
    In normal operations when temp reaches a set temp one fan comes on, if temp
    keeps going up (hot summer day/stuck in traffic) in other words, no unaided
    air flow, when temp reaches higher preset temp the other fan comes on.
    It sounds to me as your lower temp sensor fan is not coming on. When the
    higher temp is reached the fan comes on, cools things down and turns off.
    Temp rises to lower setpoint fan 1 should come on but does not, temp rises
    more, fan 2 comes on. Then the cycle repeats.
    Happy cruising
    RMoore, Sep 17, 2004
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