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Help no heat 6 cylinder 2011 Tacoma

Discussion in '2nd Gen. Tacomas (2005-2015)' started by fireofficer001, Feb 18, 2019.

  1. Feb 18, 2019 at 4:22 PM
    #1
    fireofficer001

    fireofficer001 [OP] Member

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    Went the other day to firestone for the no heat problem, they change thermostat, upper and lower hoses, flushed radiator and changed coolant, and new radiator cap. Still no heat. They said may recommend a head gasket. Freezing my ass off in Colorado. Any advice will be greatly appreciated.
     
  2. Feb 18, 2019 at 4:25 PM
    #2
    07regtacoman

    07regtacoman Well-Known Member

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    If it was a head gasket other symptoms would be smell of antifreeze, oil contaminated with antifreeze or smoke blowing out the tailpipe.
     
  3. Feb 18, 2019 at 4:28 PM
    #3
    fireofficer001

    fireofficer001 [OP] Member

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    Truck runs great. Any idea then what it could be, or where to look?
     
  4. Feb 18, 2019 at 4:29 PM
    #4
    b_r_o

    b_r_o Nature Boy

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    Are both the heater core hoses hot to the touch? If 1 is hot and 1 is cold you could have a restricted heater core. If they are both hot then make sure the blend door isnt stuck in the cold position
     
    blu92in99, Sprig and Clearwater Bill like this.
  5. Feb 18, 2019 at 4:37 PM
    #5
    Sprig

    Sprig Well-Known Member

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    Take your truck somewhere else, it definitely isn’t a head gasket. First I’d be looking at the heater hoses and heater core. I assume it blowing air out the vents?
     
  6. Feb 18, 2019 at 4:38 PM
    #6
    fireofficer001

    fireofficer001 [OP] Member

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    Yes, but cold.
     
  7. Feb 18, 2019 at 4:40 PM
    #7
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    Lesson 1) find a good independant mechanic. Not something franchises are especially noted for. It happens, but rarely.

    Lesson 2) listen to @b_r_o
     
  8. Feb 18, 2019 at 4:41 PM
    #8
    fireofficer001

    fireofficer001 [OP] Member

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    Sprig, I will be taking it elsewhere. I will check the hoses. Thank you. I appreciate all the info.
     
    b_r_o likes this.
  9. Feb 18, 2019 at 4:45 PM
    #9
    NAAC3TACO

    NAAC3TACO Middle aged member

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    Just east of crazy, NV
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    Color matched door handles, Weathertech floor liners, bed mat, Durafit seat covers, tailgate clamp, 2016 TRD Sport 17" wheels with Firestone Destination LE2 tires, Toyota exhaust tip, Toyota/Yakima bike rail mount, Toyota wheel locks, Toyota hitch cover, Redline hood struts, unifilter on air pump.
    It could be the actuator for the temperature door. it's a somewhat common problem on Delphi HVAC systems in GM vehicles, but I'm not sure if it's a big issue on Tacoma Delphi systems. That shop you went to was just throwing parts at it. I would avoid that shop in the future.
     
  10. Feb 18, 2019 at 4:47 PM
    #10
    Steves104x4

    Steves104x4 Well-Known Member

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    Does the dash engine temp gauge function correctly (engine temp getting hot or staying cold)
     
  11. Feb 18, 2019 at 4:48 PM
    #11
    b_r_o

    b_r_o Nature Boy

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    The thinking behind a headgasket failure is that it causes excessive pressure in the entire cooling system. This pressure can sometimes inhibit the flow of coolant through the core.

    Headgasket could be a problem but not yet, need to check other simpler stuff first. The Firestoners should at least have some more evidence to back up their HG suspicions, like a block test.

    Before the firestone work, did you have a slow loss of coolant that wasn't dripping on the ground? Like, did you have to top off the coolant level on a regular basis? That would /could be a sign of a HG leak..
     
  12. Feb 18, 2019 at 4:57 PM
    #12
    Sprig

    Sprig Well-Known Member

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    I concur with bro, that is exactly where I’d be looking
     
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  13. Feb 19, 2019 at 6:51 AM
    #13
    96carboard

    96carboard Well-Known Member

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    Simple thing to test.... turn on the ignition switch, do NOT start the engine. Turn the temperature knob from full hot to full cold. You should be able to hear a very faint "whirring" sound. Similarly when you turn it back from cold to hot. If not, then you have found your problem.
     
    knayrb likes this.
  14. Feb 19, 2019 at 12:41 PM
    #14
    Sae68

    Sae68 Well-Known Member

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    Possible to manually open heater control valve near firewall?
     
  15. Feb 19, 2019 at 4:02 PM
    #15
    Jimmyh

    Jimmyh Well-Known Member

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    There is no heater control "valve" in a second generation Tacoma. Full water flow through the heater all the time. They use a servo motor to blend hot and cold air.

     
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