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How to flush heatercore on 1997 saturn - Saturn Cars & Trucks

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Remove both heater lines at the firewall. Flush backwards from normal circulation. Use a garden hose, or compressed air also works.
The inlet to the core will come from the cylinderf head or the intake. The core's outlet will go to the fron t of the engine and connect near or onto the water pump.

Posted on Nov 01, 2012

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Posted on Jan 02, 2017

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SOURCE: no heat

I had the same problem and it went away on its own. Make sure the button to the left of the rear defroster is off, I think that's what did it for me.

Posted on Jan 05, 2009

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SOURCE: i need to know how to flush the heatercore out on

the best way is to disconnect both hoses under the intake manifold and run a hose thru it,and then flush it out with a air hose,pressure if you have a blockage,but not too high psi you dont want to blow it up

Posted on Oct 09, 2009

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