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Bleeding system

This is a discussion on Bleeding system within the General Help forums, part of the LSx Technical Help Section category; Is there any special trick to bleeding the coolant system? The dealership is working on it right now replacing the ...

  1. #1
    Member zeetwentyeight's Avatar
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    Bleeding system

    Is there any special trick to bleeding the coolant system?
    The dealership is working on it right now replacing the heater core.
    And they are saying that my car is heating up too fast and may have warped the heads. Really frustrated right now

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    Spaz is My Mentor SMWS6TA's Avatar
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    open peacock value and let it drain into a container. To get the water that is in the block you can warm the engine up till the stat opens up or pull stat or water temp sensor to help drain it when cold.


    What is the temp reading and how high vs how quickly is it going?

    On 90+ degree days it only takes about 5 mins for mine to reach 180 at idle. But it stays at 180.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    open peacock value and let it drain into a container. To get the water that is in the block you can warm the engine up till the stat opens up or pull stat or water temp sensor to help drain it when cold.


    What is the temp reading and how high vs how quickly is it going?

    On 90+ degree days it only takes about 5 mins for mine to reach 180 at idle. But it stays at 180.
    Its running slightly over 210, up hills its goes up i would say around 10 more degrees.
    This is under normal driving conditions giving it hardly any gas at all.

    I know the thermostat is opening cause when i drained it as you said it kicked it all out of the block.

    I dont think we have even hit 90 degrees yet in utah its probably about 80-85 right now.

    Goes up to 210 in about 8-12 mins just starting it and letting it idle

    Thanks for the reply

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    Spaz is My Mentor SMWS6TA's Avatar
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    Water pump needs replaced. No reason it should go that high. I'd go ahead and change the stat too just to have a new one in. How long did it get above 210? If it was a quick spike and you pulled over and turned off you should be ok. However if you drove it for a while then you'll possible have much bigger issues. No oil in the fluid is there? Might want to check oil dip stick too. see if any radiator fluid got into your oil. If that has happen YOU HAVE BIG PROBLEM.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    Water pump needs replaced. No reason it should go that high. I'd go ahead and change the stat too just to have a new one in. How long did it get above 210? If it was a quick spike and you pulled over and turned off you should be ok. However if you drove it for a while then you'll possible have much bigger issues. No oil in the fluid is there? Might want to check oil dip stick too. see if any radiator fluid got into your oil. If that has happen YOU HAVE BIG PROBLEM.
    The oil is good and coolant is good too, it got the highest temp going up this one hill went to about 240.
    i got over the hill dropped it down a gear to get some rpm's on the water pump and it cooled right down below what it usually runs at.

    And i think with a bad water pump it would over heat right away not run at a higher temp then usual.

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    Spaz is My Mentor SMWS6TA's Avatar
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    just how long and what degree of incline was this hill? I've been in mountains that would overheat trannys and engines because they were some steep SOB's and a couple miles long.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    just how long and what degree of incline was this hill? I've been in mountains that would overheat trannys and engines because they were some steep SOB's and a couple miles long.

    Its was a pretty steep/long hill through this canyon and it was pretty hot that day.
    im gonna runs some dye in my coolant and see if there are any leaks then ill flush it sunday.
    and im gonna order that 160 degree stat and slp switch and see how that does, and also a frost tune

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    Senior Member bigrondownhiller's Avatar
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    Why did they replace the heater core?

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by bigrondownhiller View Post
    Why did they replace the heater core?
    Damn thing leaked all over my freshly shampooed carpets lol

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    Senior Member bigrondownhiller's Avatar
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    Might want to flush the radiator good anyway. Could be partially clogged.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by bigrondownhiller View Post
    Might want to flush the radiator good anyway. Could be partially clogged.
    Thats what im doing here in about an hour

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    Moderator Cutlass's Avatar
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    make sure the heater hoses on the correct fittings. I read a thread here once where they were swapped around the wrong way at the water pump and the thing overheated

  13. #13
    Member zeetwentyeight's Avatar
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    Well did the flush tonight and its seems to be running at the same temp.
    I also took a picture of my gauge let me know if this about what your cars are running at? and this is stock tstat

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    Member zeetwentyeight's Avatar
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    Anybody?

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    if any air pocket left in system,may over heat need to bleed air from the highest point , if I remenber correctly bleed air from
    Throttle Body Coolant pipe
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    I don't sell out! blackSS01's Avatar
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    Air pockets X2! That and aren't our temp gauges just dummy gages to begin with
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    Moderator Cutlass's Avatar
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    ^^^the 98 temp gauge is more accurate. It has a 3 wire coolant temp sensor.

  18. #18
    Moderator Cutlass's Avatar
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    Quote Originally Posted by zeetwentyeight View Post
    Click for full size
    thats normal and isn't anything to worry about.

  19. #19
    Member zeetwentyeight's Avatar
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    Quote Originally Posted by Cutlass View Post
    thats normal and isn't anything to worry about.
    For a 98?
    My buddy has a 98 as well, he showed up at my work today and i asked him it was sitting at and he said slightly below 210.


    Can any body point out to me where that TB hose is and should i run it while its spraying out or just let it sit for a few hours with it off?


    Thanks for the replys guys

  20. #20
    Moderator Cutlass's Avatar
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    98's have a functional gauge in comparison to the dummy gauge on 99 - 2002. You'll see up and down fluctuation in the coolant temp in a 98. Owners didn't like that so GM fixed it by using a dummy gauge.

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