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Heater unit problem

Discussion in '1st Gen. Tacomas (1995-2004)' started by Icefsh, Sep 17, 2011.

  1. Sep 17, 2011 at 6:53 PM
    #1
    Icefsh

    Icefsh [OP] Member

    Joined:
    Sep 11, 2011
    Member:
    #63292
    Messages:
    18
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    Male
    Colorado
    Vehicle:
    99 SR5
    My truck (1999) does not put out heat! Eveything else works, A/C, all air diverters and blower work fine. Just replaced the heater contol assembly today and found out that the cable to open the panel for the blend air does not move the assembly. The cable moves a little so I don't think that is the problem. But the panel is jamed somehow. That cable moves a lot of things on the bottom side of the unit. Any help would be appreciated.
     
  2. Sep 18, 2011 at 10:32 PM
    #2
    hayabusa3303

    hayabusa3303 Well-Known Member

    Joined:
    Aug 3, 2011
    Member:
    #61062
    Messages:
    556
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    First Name:
    Mike
    florence sc
    Vehicle:
    95.5 taco 4x4
    ARB bumper, warn 9.5 winch. carbon fiber hood. Leer top with thule racks and MOAB from thule. Electric fans, blue sea fuse block, Sony dvd Head unit, Xm tuner and HD tuner. New carpet and new racing seats. ( other half doesnt like them i think). Nwor springs and adjustable coil overs. Sky jacker rear shocks. Slot and drilled rotors. Engine Titanium ceramic coated headers, no cat, jba cat back. URD Rear Sensor Simulator. Leds all around and inside cab and HID H4 hi/lo beams.
    for heat :
    On the firewall there is a square valve it has a cable on it check to see if that cable is moving or not. Remove the cable from the valve and turn it the other way see if you get heat then. If you do get heat then your cable is bad or a bend that is to sharp.

    Sounds like you have a few cables are bent or wore out.
     
  3. Sep 19, 2011 at 8:54 PM
    #3
    Icefsh

    Icefsh [OP] Member

    Joined:
    Sep 11, 2011
    Member:
    #63292
    Messages:
    18
    Gender:
    Male
    Colorado
    Vehicle:
    99 SR5
    I have taken the cable off of the valve on the engine side of the firewall and moved it to hot. No difference. The cable that pulls that valve and the cable that moves the blend air panels move at the same time. Since the panels are somehow jammed none of the cables move. Might have to look up the diagram for the heat unit and see if it can be taken apart. Anyone know where I might be able to find them? Checked on the site for the repair manual and it shows only how to remove it. Guess I will keep seaching the net.
     
  4. Sep 25, 2011 at 9:11 AM
    #4
    Icefsh

    Icefsh [OP] Member

    Joined:
    Sep 11, 2011
    Member:
    #63292
    Messages:
    18
    Gender:
    Male
    Colorado
    Vehicle:
    99 SR5
    You got me thinking some more and I double checked the cable. It moves a little bit. So I removed it and found that it was bent slightly at the mount. Bent around on it and got it to work! Thanks for putting the idea in my head. Don't think I would have double checked without your post.
     
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