Thread: Coolant leak at thermostat

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  1. #1 Coolant leak at thermostat 
    GrandPrix Junkie SDGTP99's Avatar
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    Replaced the thermostat not too long ago and it started to leak. Took it apart, cleaned everything put it back together and it still leaked. Took it apart again cleaned it and used sealant. It's still leaking. Ya'all have any thoughts on this?
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  2. #2 Re: Coolant leak at thermostat 
    Killa Bee Scottydoggs's Avatar
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    pretty sure the 04 up only use a O ring. the t stat also gets wrapped in a rubber ring. could add a gasket if your not using one. make sure both sides of the lim and housing are clean and smooth.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: Coolant leak at thermostat 
    GrandPrix Junkie SDGTP99's Avatar
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    NVM you guys the problem was way simple. The lower radiator hose clamp, to the wp, was loose. 🤦
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  4. #4 Re: Coolant leak at thermostat 
    Killa Bee Scottydoggs's Avatar
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    yup, that would be a kick in the nuts lol easy fix at least.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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