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

2003 grand marquis no heat engine temp normal other eatc ops all normal. is there an external heater control valve on the car?


  • Insufficient, erratic, or no heat
  • Low engine coolant level.
  • Engine overheating.
  • Plugged or partially plugged heater core (18476).
  • Temperature blend door binding/stuck.
  • Temperature blend door actuator (19E616).
  • Incorrect heater control valve (18495) operation.
  • Go To Pinpoint Test I .

Are the heater hose's going through the fire wall hot ?
I2 CHECK FOR HOT WATER TO THE HEATER CORE INLET HOSE WARNING: The heater core inlet hose will become too hot to handle and may cause serious burns if the system is working correctly. Allow the engine to reach normal operating temperature. Feel the heater core inlet hose.
  • Is the heater core inlet hose too hot to handle?
Yes GO to I4 .

No REFER to Section 303-03 to check cooling system function.

Jan 06, 2018 | 2003 Mercury Grand Marquis

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:
1: the engine must reach 180F + and hold, does it.???
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.

3: air must flow through said core. (damper or dirt blocking core)

1,2,3.
gotta be...

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

Sep 01, 2015 | Jeep Cars & Trucks

1 Answer

Fix truck heater


Is the temperature gauge reading about 210 degrees? If the temp is low, the thermostat may be stuck open and not allowing sufficient heat. Also check the heater hoses to see if they are hot to the touch. If one feels hot and the other is cold or only warm, heater core is becoming clogged.

Feb 25, 2015 | 2002 Chevrolet Impala

1 Answer

Heater core flush


Are the heater hoses going into the passenger compartmet from the engine bay Hot ? What's the temp. of the engine coolant ? Go to harbor freight tools an buy a Non-Contact Infrared Thermometer With Laser Targeting . an test the temp of the coolant . Hook up a scan tool that can read sensor data an see what the PCM is seeing from the coolant temp sensor .
If the temp is good , heater hoses hot etc.... probably a temp blend door actuator .

Feb 15, 2018 | 2006 Chevrolet Equinox

1 Answer

97 jeep gc only one heater hose is hot ? i get no heat


Yes. Is there a heat valve in the heater hose may not be opening. Next no heat valve disconnect both heater hoses crank engine and see where the water squirts out of engine thats where the inlet side of the heater Hook the garden hose to the other side and blow it out probably full of rust change antifreeze more often

Dec 05, 2011 | 1997 Jeep Grand Cherokee

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":

Jan 14, 2011 | 1997 Jeep Grand Cherokee

1 Answer

My heater in my blazer does not heat. the engin temp reads normal, and the fan runs but cold air comes out


Hello. this is normallyt caused by a restricted heater core. under the hood on the passenger side of engine you will see two heater hoses going to the firewall. feel these hoses, they should both be hot to the touch. if one is cold and the other is hot, the heater core is plugged up. sometimes you can back flush the heater core and get the heat to work again.

Dec 07, 2010 | 2000 Chevrolet Blazer

1 Answer

My heater in my car will not get warm... The temp guage reads normally but was wondering why the heater will not heat up?


These taurus' have a notorious problem with the blend door actuator(controls hot and cold air mixture) failing.This is located in the cab of the car underneath the dash right in the center.This is not a diy project unless you have fairly extensive mechanical background.What you can check with ease though is to make sure that your coolant is full, this can cause a no heat condition.Also get your car up to normal operating temp and place your hands on the inlet and outlet if the heater core hoses, on the engine side of the firewall, and make sure both hoses are hot, if they are both hot then it is a blend door issue, if not then you have a restricted heater core, you can back flush your heater core by removing the hoses and placing a garden hose to either side and flushing it thru. I hope i could help....rate me accordingly.Thanks!!!

Oct 08, 2010 | 2001 Ford Taurus

3 Answers

My 2005 Jeep Liberty will not blow heat through heater ducts. Fan works fine but blows only cold air. Any idea what the problem is?


heater valve if you have 1 ,or temp control actuator which is under the dash and takes hours to replace!

Jan 30, 2010 | 2006 Jeep Liberty

2 Answers

No heat,engine temp.is normal


the valve that allows the hot water into the heater core is not opening. most likely electronic issue. also check all vacuum and electric lines.

Nov 03, 2009 | 2000 GMC New Sierra 1500

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