Question about Jeep Liberty
From the symptoms you describe it is a restriction in the heater core or the hoses.
At idle the water pump is turning slowly and has less pressure and flow.
As your engine speeds up so does the water pump and it flows more heated coolant through the core.
Check for a pinched line in and out of the heater core. If they appear OK you may need the core flushed or replaced.
I hope your repair goes well for you.
Thank you for using FixYa.
Posted on Oct 15, 2010
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Posted on Jan 02, 2017
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