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strange coolant leak

This is a discussion on strange coolant leak within the General Help forums, part of the LSx Technical Help Section category; I have a feeling its the water pump, but I am hoping not since I just replaced it like 2-3 ...

  1. #1
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    Pewter Metallic
    2001 Trans Am WS.6

    strange coolant leak

    I have a feeling its the water pump, but I am hoping not since I just replaced it like 2-3 years ago. Basically, it leaks a little or a lot, and not all the time. Its the puddle mainly forms from around under the thermostat housing. This is some evidence of coolant up top, just beneath the throttle body as well. Dried coolant, and wet as well, depending. But for all i know its being flung up there. The leak is large enough to cause a decent sized puddle, yet small enough that I can't really tell where its dripping from. Any ideas? I'm going to borrow a pressure tester from a coworker when i go back after the new year, if I still havent figure it out. Its a 01 WS6, water pump was replaced within the last 2-3 years, same with t-stat.

  2. #2
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    Test the system and let us know what you find. Could be the thermostat gasket, loose thermostat housing or hose. Start small but be prepared for something big.

  3. #3
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    How about a leaking thermostat housing?

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    Retired NOT tired SteveC's Avatar
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    I am pushing at straws here, is there not a line or hose that carries coolant through the throttle body? Is it possible that it can be loose causing the leak?

    I would appreciate it if anyone can comment on this.

    SteveC

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    Former Mopar Man 2002ssslp's Avatar
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    Pressure test the system and stop guessing. Water will always follow a path downward so you need to see where it begins. Good luck.
    My ride is a 2002 Camaro SS SLP #3296 with 30k, LTH, 3" Y, CME, Frost tune, K&N, ported TB, Blackwing lid, Bellows, MSD, Denso Iridium, and 85mm MAF, Bilsteins, Eibach springs, SLP strut brace, Adj. Panhard, TA Girdle, UMI, Pro 5.0, Nitto NT555
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  6. #6
    Junior Member chevuman260's Avatar
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    Quote Originally Posted by SteveC View Post
    I am pushing at straws here, is there not a line or hose that carries coolant through the throttle body? Is it possible that it can be loose causing the leak?

    I would appreciate it if anyone can comment on this.

    SteveC
    You are correct. This can be bypassed but it is there to prevent the throttle blade from freezing during winter.

    I am with everyone else. Pressure test it to see where the leak is coming from before throwing parts at it.
    2001 Camaro Z28 - AFR210 V2 Heads, JPH Cam, Fast 102mm intake, TS 100mm MAF, NW 102 TB, FTP 104mm lid, kooks 1 3/4 Long tubes, custom Y pipe w/dump, BMR LCA,TQ. Arm,PH bar, lca bracket,k member, Upper/Lower A arms, AFCO shocks
    11.20@120MPH
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  7. #7
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    I'm going to pick up the pressure tester next week when I go back to work. Its cold and snowing here now so I'm not driving it anyway.

  8. #8
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    Don't go overboard with the pressure tester -- you don't want to rupture something. Run it up to 10-12 lbs and see what happens. If you don't find anything after a bit, increase the pressure, but don't exceed 16 psi for the test.

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