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Do I need to bleed the coolant after replacing the heater valve

Discussion in '3rd Gen 4Runners (1996-2002)' started by Trekker, Oct 4, 2024.

  1. Oct 4, 2024 at 3:45 PM
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    Trekker

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    Trekker [OP] Regular Member

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    I plan on replacing my leaking heater valve which is on the firewall up high. I don't plan on draining the system because the valve is higher than the radiator, but some fluid will come out.

    When I put the new valve on should I bleed the system like I did when I flushed the coolant?
     
    Trekker, Oct 4, 2024
    #1
  2. Oct 4, 2024 at 3:54 PM
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    negusm

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    negusm New Member

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    On the 6cyl, I have never bled the system when replacing the radiator or doing a t-belt. I have heard most TOYOTA coolant setups are pretty forgiving and the air moves out of the system after a bit. I, myself, wouldn't bother. You can do it later if you have heating issues.
     
    negusm, Oct 4, 2024
    #2
  3. Oct 4, 2024 at 4:16 PM
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    Dillusion

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    Dillusion Resident A**h***

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    Don't know how you bled when you flushed.

    But I'd just park up hill and run it without the radiator cap. Or you can get one of those fancy funnels. Top off as needed.
     
    Dillusion, Oct 4, 2024
    #3
  4. Oct 15, 2024 at 4:16 PM
    #4
    Timmy the Toolman

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    Timmy the Toolman New Member

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    Too many mods to list.
    You could get yourself a Lisle Spill-Free funnel which will help you burp the system. I would have the front end higher than the rear like @Dillusion mentioned. Even after you burp the system, some air will still be trapped which will work itself out after the first couple days of driving and you'll notice the level in your reservoir will drop. You just need to top it off once, maybe twice, and then the system will most likely stabilize because all the air has worked itself out of the system.
    $30 Lisle 24680 Spill-Free Funnel, Standard Adapters, 11 x 7 x 7"es
    https://www.amazon.com/gp/product/B00A6AS6LY?ie=UTF8&th=1
     
    Timmy the Toolman, Oct 15, 2024 at 4:16 PM
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Lisle 24680 Spill-Free Funnel, Standard Adapters, 11 x 7 x 7"es
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