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Temp Guage Dancin Around

Discussion in '1st Gen. Tacomas (1995-2004)' started by Famouskmksrh26, Apr 11, 2010.

  1. Apr 11, 2010 at 3:28 PM
    #1
    Famouskmksrh26

    Famouskmksrh26 [OP] Active Member

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    i was on my to my dads house n my temp guage started dancing around lookin for some help with what the problem maybe...PLEASE HELP
     
  2. Apr 11, 2010 at 5:42 PM
    #2
    crazyasu45

    crazyasu45 Well-Known Member

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  3. Apr 11, 2010 at 8:54 PM
    #3
    Famouskmksrh26

    Famouskmksrh26 [OP] Active Member

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    Your sayin my thermo stat... cuz now i just came and its not doin it
     
  4. Apr 12, 2010 at 1:10 AM
    #4
    Manlaan

    Manlaan Well-Known Member

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    How much and at what frequency is it jumping around?

    A broken thermostat will usually either be frozen open or closed. Frozen closed will cause overheating. Frozen open will cause it to take an awful long time to reach operating temperature. I suppose if it was only opening when it got way above temperature, you could potentially see some fluctuations.

    Frequent jumping might point to something else. Temperature sending unit malfunctioning (I think they call it an engine coolant temperature (ect) sensor now), wiring, or maybe the gauge itself.

    Just a complete guess though, as those are the only items I can think of off hand that deal with displaying temperatures.
     
  5. Apr 12, 2010 at 5:30 AM
    #5
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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  6. Apr 12, 2010 at 8:46 AM
    #6
    crazyasu45

    crazyasu45 Well-Known Member

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    x2 Faulty Temperature Sending Unit
     
  7. Apr 12, 2010 at 8:53 AM
    #7
    crimsonred2004

    crimsonred2004 X-wing Design Engineer

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    My wifes car did that a while back....it was because there was no coolant in the overflow tank and the coolant in her radiator was several quarts low...when we filled it all back up to normal level the temp gauge stopped going all over the place and acted normal again....
     
  8. Apr 12, 2010 at 8:59 AM
    #8
    crazyasu45

    crazyasu45 Well-Known Member

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    I think thats the first thing he would check...I know I would...
     
  9. Apr 12, 2010 at 11:55 AM
    #9
    Famouskmksrh26

    Famouskmksrh26 [OP] Active Member

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    ya i did check that first thing and now its pegged out and stuck on overtemp
     
  10. Apr 12, 2010 at 3:29 PM
    #10
    crazyasu45

    crazyasu45 Well-Known Member

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    Back to T-stat haha...check the lower rad hose when the engine is hot...is it hot or cold?
     
  11. Apr 14, 2010 at 12:28 PM
    #11
    Famouskmksrh26

    Famouskmksrh26 [OP] Active Member

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    well its fixed cost me 611 to have it fixed t-stat was bad and ect truck wasnt reaching full temp
     
  12. Apr 14, 2010 at 12:31 PM
    #12
    btkicker

    btkicker Well-Known Member

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    611?!?!

    :annoyed:

    You don't want to know how much you would have saved if you did what reply #1 recommended.
     
  13. Apr 14, 2010 at 12:34 PM
    #13
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    I am thinking about $600
     
  14. Apr 14, 2010 at 1:10 PM
    #14
    MK ULTRA

    MK ULTRA Well-Known Member

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    $611 hmmm

    That would have done the timing belt.
     
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