intermittent Bubbling noise in dashboard.. Any ideas?
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Northstar Engines and System Technical Discussion Discussion, intermittent Bubbling noise in dashboard.. Any ideas? in Cadillac Engine Technical Discussion; I am hearing a intermittent Bubbling noise in the dashboard upon acceleration. This 1998 seville sts has recently been timeserted ...
  1. #1
    ss6r is offline Cadillac Owners Member
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    intermittent Bubbling noise in dashboard.. Any ideas?

    I am hearing a intermittent Bubbling noise in the dashboard upon acceleration. This 1998 seville sts has recently been timeserted and new OEM head gaskets and bolts replaced within 700miles ago. Symptoms are no overheating just bubbling in dash, could this be air pockets in the cooling system? is there a way to bleed the system other than through the pressurized coolant cap? Any help or oppinions would be greatly appreciated.

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  3. #2
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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    Re: intermittent Bubbling noise in dashboard.. Any ideas?

    Quote Originally Posted by ss6r View Post
    I am hearing a intermittent Bubbling noise in the dashboard upon acceleration. This 1998 seville sts has recently been timeserted and new OEM head gaskets and bolts replaced within 700miles ago. Symptoms are no overheating just bubbling in dash, could this be air pockets in the cooling system? is there a way to bleed the system other than through the pressurized coolant cap? Any help or oppinions would be greatly appreciated.

    I personally pull a vacuum on the cooling system to remove all the air from it.
    It sound like air trapped in the heater core

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: intermittent Bubbling noise in dashboard.. Any ideas?

    Do a search for purge line and check it. It's job it to purge the system of air so you don't have to.

  5. #4
    ss6r is offline Cadillac Owners Member
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    Re: intermittent Bubbling noise in dashboard.. Any ideas?

    Thanks for your quick responses, I will investigate.

  6. #5
    ss6r is offline Cadillac Owners Member
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    Re: intermittent Bubbling noise in dashboard.. Any ideas?

    Ranger I found this response from a post in december '07... thanks SS6R

    Ranger
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    Re: 1995 STS Cooling problems?

    --------------------------------------------------------------------------------

    The purge line is the 3/8" line into the side of the surge tank near the top. It should spit coolant at idle and flow should increase with RPM. If you could not blow into it, that may well be your problem. Locate the obstruction and clear it. It may be where it connects to the water pump housing aka crossover manifold.

  7. #6
    Crown Vic Owner is offline Cadillac Owners Connoisseur
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    Re: intermittent Bubbling noise in dashboard.. Any ideas?

    mind showing me where this line is?

  8. #7
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: intermittent Bubbling noise in dashboard.. Any ideas?

    Crown Vic, Take a look at the pic...the surge tank ('02 STS) is on the right and the purge line is the smaller hose which comes from the side of the tank, across the air intake pipe, and connects to the w/p-thermostat housing.

    Click on the image and scroll in. (Butt plug in there, too: intake resonator removed.)

  9. #8
    Crown Vic Owner is offline Cadillac Owners Connoisseur
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    Re: intermittent Bubbling noise in dashboard.. Any ideas?

    Ah, ok.


    Thanks.

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