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just did a 180 thermostat

This is a discussion on just did a 180 thermostat within the External Engine forums, part of the LSx Technical Help Section category; so i have a 97 camaro ss(lt1) and i replaced the t-stat with a 180 fill radiator with coolant then ...

  1. #1
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    black
    1997 camaro z-28/ss

    just did a 180 thermostat

    so i have a 97 camaro ss(lt1) and i replaced the t-stat with a 180 fill radiator with coolant then fired the car up the car was cold and the temp started to rise pretty quick so it got to 240 and i shut it off right away my question is am i doing something wrong if so what?(sorry im new to cars)

  2. #2
    Moderator Firebirdjones's Avatar
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    Lt1's have a pair of bleed off valves that have to be open while filling the coolant, and I beleive cracked open as well while running until coolant starts to ooz out.

    Read up on the owners manual and it will explain the procedure on how to use these bleeder valves in the coolant system.

    Sounds like you have a huge air pocket in there.

  3. #3
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    1997 camaro z-28/ss

    where can i find this pair of bleed off valves

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    Moderator Firebirdjones's Avatar
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    One is on the thermostat housing,,,kind of hidden under the intake elbow.

    The other one is inline on a bypass/heater hose very close to the first one. You will see a premolded hose coming from the water pump next to the thermostat housing, as it heads towards the radiator right in front of the alternator it turns into a short metal section, the bleeder valve will be right on top of that metal section almost directly in front of the alternator before the hose disappears again.

    If you crack these open, you should see bubbles etc....while running the engine, and they should be closed only after you see a steady stream of coolant coming out. Manual will give a full explaination.

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  6. #6
    Member Pntbll309's Avatar
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    Arctic White
    1999 Trans Am

    When I did a 160* I just swapped it out and it worked perfectly... It was also an OBD I car tho.

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