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coolant leak

Discussion in '1st Gen. Tacomas (1995-2004)' started by PeterNM, Feb 12, 2011.

  1. Feb 12, 2011 at 3:04 PM
    #1
    PeterNM

    PeterNM [OP] Active Member

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    on my 97, 2.7l i have a slight coolant leak on the upper, passenger, rear engine block. a while ago i replaced the tempture sending unit that is roughly in the same location....so i checked and rechecked the sending unit and it looks dry. the coolant level in the resevor is at the full line and the level in the radiator was full not quite to the cap....it is now out of eyesight. could it be possible that when i refilled the coolant i overfilled?
     
  2. Feb 12, 2011 at 4:11 PM
    #2
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    thats very possible.

    best way to check for a coolant leak...that i have found.....drive around for a while then park...and put some clean carbboard under the engine compartment. that way, you'll see if you have any leaks, and you can go from there.
     
  3. Feb 12, 2011 at 8:48 PM
    #3
    Supra TT

    Supra TT Solid Axle FTMFW!!

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    Or even a white peice of paper, shows up easier!
     
  4. Feb 12, 2011 at 10:14 PM
    #4
    BoostingMS6

    BoostingMS6 Well-Known Member

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    ^^^ Cardboard won't blow away super easily though. Tape the paper if you're going to use it instead.
     
  5. Feb 13, 2011 at 9:35 AM
    #5
    PeterNM

    PeterNM [OP] Active Member

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  6. Feb 13, 2011 at 10:21 AM
    #6
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    what part is that? i cant really tell....
     
  7. Feb 13, 2011 at 10:34 AM
    #7
    PeterNM

    PeterNM [OP] Active Member

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    the fsm says it's the water valve control cable....
     
  8. Feb 13, 2011 at 10:36 AM
    #8
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    maybe its the cable fitting that has gone bad. what i would do is clean it off really well and dry it up, and let truck run and see if it is coming from a hole in the cable...or from the fitting and then get what you need. im gonna bet the fitting has gone bad.
     
  9. Feb 13, 2011 at 10:54 AM
    #9
    PeterNM

    PeterNM [OP] Active Member

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    i cleaned it, let it run.....it you look at the picts above the arrow there's a small screw, i believe that's where i'm getting the leak.....i've looked in fsm and haynes and did not find a how to fix or take apart...i did try and tighten the screw but it was tight....i'm just checking to see what is now involved with replacing that part or if anybody has done this job....thanks
     
  10. Feb 13, 2011 at 11:18 AM
    #10
    SUPMO72

    SUPMO72 Well-Known Member

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    Thats the valve that regulates the coolant to the heater core. Its leaking from the saft inside the valve under the screw that you see.
     
  11. Feb 13, 2011 at 11:22 AM
    #11
    PeterNM

    PeterNM [OP] Active Member

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    makes sense....ever have to replace it??
     
  12. Feb 13, 2011 at 11:41 AM
    #12
    mrp192

    mrp192 REALLY!!

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    that looks like a easy remove and replace. the 2 lines and valve switch. then the mounting bolt.

    Then just the coolant bleed..
     
  13. Feb 13, 2011 at 1:05 PM
    #13
    PeterNM

    PeterNM [OP] Active Member

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    yes....i'm checking on the price of the valve switch from toyota.....any advice on the coolant bleed?
     
  14. Feb 13, 2011 at 2:49 PM
    #14
    mrp192

    mrp192 REALLY!!

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    take off the rad cap and run your heater on high for about 15 mins.. rev the eng every few mins to get out the air bubbles..
     
  15. Feb 13, 2011 at 3:11 PM
    #15
    PeterNM

    PeterNM [OP] Active Member

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    will do....thanks for the help.
     
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