Q: no heat on 2001 Chrysler PT Cruiser

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i have a 01 PT Cruiser with no heat the upper and lower rad hoses are hot as well the in and out lines for the heater core are hot, it has also had a rad flush and rad cap replaced still no heat the temp gauge is at half in a normal time as well. Is there a sensor for the heater core? Other than replacing the thermostat im stumped please help?
(2) Answers
either the heater core is clogged or the blend door is not functioning.
the heater hoses should have about a 30 degree difference in temp.

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move the heater switch from hot to cold listen for a change in the air flow. if you don't hear any change. you may have a vaccum leak, damper door or motor not working. that won't let heat from the heater core be blown into the cars vents.
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