Thread: Losing coolant IMMEDIATELY after topping off radiator!! HELP!!

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  1. #1 Losing coolant IMMEDIATELY after topping off radiator!! HELP!! 
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    Ok.... 2000 Grand Prix 3.8. The coolant elbows on the tensioner pulley gave out yesterday (40 miles from home btw) once I got to work . I figured it wasn't a big deal, so I replaced them. Well ever since I replaced them, the light continuously comes on (as soon as MINUTES after i start driving), and i have gone through a lot of water in less than 24 hrs. There is no obvious leak.

    Is this a possible head gasket, or intake Manifold gskt?

    I need answers ASAP
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  2. #2 Re: Losing coolant IMMEDIATELY after topping off radiator!! HELP!! 
    Moderator dsmuts's Avatar
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    Did you bleed the coolant out after filling it?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  3. #3 Re: Losing coolant IMMEDIATELY after topping off radiator!! HELP!! 
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    Yes.

    It looks like the intake manifold gasket gave out.
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  4. #4 Re: Losing coolant IMMEDIATELY after topping off radiator!! HELP!! 
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    How hard of a job is doing the intake manifold on these 3800's? I've done it on a 350 in a GMC Yukon, and it basically sucked.
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  5. #5 Re: Losing coolant IMMEDIATELY after topping off radiator!! HELP!! 
    Moderator dsmuts's Avatar
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    It's super easy on a 3800
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  6. #6 Re: Losing coolant IMMEDIATELY after topping off radiator!! HELP!! 
    Turbo is the way to go. BillBoost37's Avatar
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    I'd doubt it's the LIM's leaking that badly. I'd expect it's the UIM itself. Not a gasket.

    http://www.grandprixforums.net/97-03...ure-60667.html
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  7. #7 Re: Losing coolant IMMEDIATELY after topping off radiator!! HELP!! 
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    The smoke seemed to be coming heavily from the upper left corner of the LIM gasket.

    Plus, i'm sure it was leaking oil as well.
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  8. #8 Re: Losing coolant IMMEDIATELY after topping off radiator!! HELP!! 
    Turbo is the way to go. BillBoost37's Avatar
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    Well.. something to consider when you go in. Plug the coolant ports so you can't have an issue with the UIM after that.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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