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  1. #1
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    Default Changing the coolant temperature sensor

    When changing this sensor can you just use plumbers tape or do you need to use something liquid on the threads?

  2. #2
    GrandPrix Junkie
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    Default Re: Changing the coolant temperature sensor

    I've used both in the past with no leaks either way.

  3. #3
    GTP Level Member buickman104's Avatar
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    Default Re: Changing the coolant temperature sensor

    Yup, I've used both and haven't experience any leaks either.
    2000 Bronze Metallic GTP
    Power :Gen V, 3.6 pulley, 3 inch down pipe, Power log, FWI,and DHP Power Tuner,
    Handling: Vogtland Springs, GMPP sway bars, STBS, 18" Konig backbone, CTS-V Front brakes and GXP rear brakes

  4. #4
    GrandPrix Junkie SgtMarshal's Avatar
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    Default Re: Changing the coolant temperature sensor

    I just installed the sensor with nothing. new sensors come with paste or something on them that will seal when they are new, but after that, you need tape or paste or something to seal it up.
    Last edited by SgtMarshal; 03-18-2017 at 06:47 PM.

  5. #5
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    Default Re: Changing the coolant temperature sensor

    The new coolant temp sensors usually do not come with any form of paste or sealant on the threads.

    Get plumbers paste or the sealant tape.

    I'd rather be safe than sorry since it's half sitting in coolant it's whole life.
    2012 Buick Regal Premium1 Turbo - White Diamond Tri-coat - 20% Tint, 5k HID Head/Fog Lights, ZZP CAI
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  6. #6
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    Default Re: Changing the coolant temperature sensor

    I just installed a new coolant temp sensor a couple of weeks ago when I did the Gen V swap (broke my old one). Replacement came with sealant tape already on it. Put it in and noticed a coolant smell after a few days, it was leaking. Pulled it out and put a thin coat of RTV on and all is good.
    2001 Buick Regal GS Supercharged 3.8L 231ci Pushrod 90 V6 | 4T65E-HD
    Gen V M90, 3.2" MPS, 60lb injectors, E85, FP rewire, F&R Powerlogs, 3" DP, 3" catback, Intake, 104s, 180 t-stat, Rendezvous HUD, Blacked-out headlights, Tint, F-body front brakes, Tuned.

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