Question about 2002 Chrysler PT Cruiser

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No heat,temp normal in engine.

Hoses hot scan tool temp reads 210 degees.both heater hoses hot.heater core?

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If it is your core you will either have a antifreeze smelling mist coming through the vents or antifreeze on the floor(wet carpet).
If both hoses are hot and the engine is running normal temp I would check into the hvac control. More specifficly the actuator and the door in the hvac that changes your hot and cold. If the door is turned to cold in the hvac and the actuator isnt turning it back when you turn the dial to hot, it may be a bad actuator or the lines going to the actuator. It may also be in the control knob itself. Hard to tell for sure but these are things tocheck out if you are stummped. Hope this helps.

Posted on Mar 22, 2009

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Is there a fog on windows on inside

Posted on Jan 10, 2009

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1 Answer

Both hoses are hot, heater core not clogged, blend doors work fine (already check via cutting in the assembly for repair), blower works fine, luke warm heat coming out 1999 jeep grand cherokee laredo


ok, its just a heat exchanger.
all that matters for heat is:
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we use the scan tool , is ECT reading that, good.!

or hand IR pyro gun,,, pointed at the thermostat housing
then pointed at both heater hoses.... what do they read.

2: the hot water must flow through the core, must.

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1,2,3.
gotta be...

back flush the core? yet? see it flow good?

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If everything is fine with gauge heat, check the hoses going to your heater core with your hands. they BOTH should be hot. If one is hot and another is warm then you have heater core issues. If both are HOT then you may want to check your temp controls. either temp control may not be working or the door that changes temp may be stuck in the cold position... there are many things, but checking the heater core hoses are most likely going to reveal bad heater core.

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1 Answer

Changed the thermostat still doesn't heat


parked or moving both? ?
why not post symptoms,??? and ask for real help not wild guesses.????????? real as in diagnostic?
my guess is the HVAC system heater i dead? dead cold on all modes and the power works on HIGH?
right?
ill guess, heater cold on fast fan.
here are the checks (I use a scan tool for ECT temp )

1: first i touch the top rad hose is it too hot to hold hand there.?
yes, that is 180F to 200F there. so is good, if not fix THAT First.
2: then step 2, heater core hoses, 2 hoses there hot same rules.
yes, no?

ill stop here,, but this is first.

first is engine heat, changing thermostat if engine hot, is a waste of time. and cash.
the engine heat can be seen 4 ways
1: dash gauge, at normal. (if don't know normal ,all this wasted)
2: IR pyro gun, check. best. a $15 tool. ends guessing .
3: scan tool ECT shows, 180F more, passes tests very good method here and is free if you have any scan tool.
4; hand flies off hose test. crude but effective, if not sure try on car that works, now you know where 180F is. "experience":

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1 Answer

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1 Answer

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1 Answer

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2 Answers

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