clogged heater core

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Northstar Engines and System Technical Discussion Discussion, clogged heater core in Cadillac Engine Discussion; I think my cooling system is blocked.I can hear water moving in dashboard.Inside not enough warm from fun.outside smell anti ...
  1. #1
    gino9's Avatar
    gino9 is offline Cadillac Owners Fanatic
    Automobile(s): Eldorado 4.5 88' & STS 4.6 N* 01'
    Join Date
    Sep 2009

    clogged heater core

    I think my cooling system is blocked.I can hear water moving in dashboard.Inside not enough warm from fun.outside smell anti freezer after drive.Some one before me used seal tablet.
    Engine not overheating.How I can check that?How to unblock system?Or heater core?
    Car is STS 01'

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: clogged heater core

    You have air in the system and that is why you have no heat. Check the purge line for flow. It is what clears (purges) air from the system. If it has no flow, the clog is usually at the other end where it mounts to the hollow bolt at the crossover manifold. It's the bolt that needs to be unplugged.

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