2001 Chrysler Town and Country 2001 Chrysler town & Cou

Tiny
S7FALCON
  • MEMBER
  • 2001 CHRYSLER TOWN AND COUNTRY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
How can the heater box be check for blockage or other performance issues? Do I have to dump the fluid? It doesn't leak and I get some heat.
John
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Tuesday, December 23rd, 2008 AT 2:41 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
John,

Is the engine running at a normal operating temp? Also, feel both heater hoses with the engine and warm and the heat on. Are they both hot?

Let me know what you find.

Joe
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Wednesday, December 24th, 2008 AT 7:07 PM
Tiny
S7FALCON
  • MEMBER
Joe
thanks for responding, I checked the hoses at the heater box and found the lower very hot and the upper warm. The car was just run an hour on the highway and only blowing warm JOHN
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Sunday, December 28th, 2008 AT 12:49 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
It sounds like the heater core may be plugged and only allowing a small amount of coolant to get through. You may want to try having the core flushed. Disconnect both hoses and spray (hose) water through the core in both directions. See if the water is dirty, has good flow.

Joe
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Sunday, December 28th, 2008 AT 5:14 PM
Tiny
S7FALCON
  • MEMBER
Joe
I flushed out the heater core 2 times and the condition didn't change. Before bringing it back to the shop, how is it determined weather the radiator or the heater core should be replaced? The mechanic said that a temperature sensing device will be used to find and eliminate what is at the correct temp. Is it most likely the core and not the radiator? Could there be some blockage in the block? Would the radiator overheat if it had some blockage? I noticed an odor of radiator fluid outside the car after a run on the highway but didn't see a leak. Normally you would not smell that. Could a leak cause the low heat and be burning off somewhere so that it doesn't show? Where would a core leak show? No odors or leaks inside the car. Does the dash board have to be pulled off to replace the core?
It's winter here in CT and this is the wife's car, so I gotta get this corrected.
Thanks and HAPPY NEW YEAR
John
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Friday, January 2nd, 2009 AT 12:23 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
If the heater core was flushed it should be fine. As far as determining if the rad is plugged, try the following.

With the engine COLD, remove the rad cap and start the engine and allow it to warm up. When you hit normal operating temp, the coolant should start to circulate in the radiator. If it doesn't chances are the radiator is clogged.

As far as the smell and leak, it should have no affect on the heat. As long as the coolant level is full, you should get heat.

Also, if your heater core is leaking, you would most likely see it in the vehicle on the passanger side. Also, most times the coolant / steam from the core leak will fog the windshield. And yes, to replace the core you need to remove a good part of the dash.

I just reviewed you posting about checking the heater core hoses. If one was very hot and the other only warm, it sounds like the core is plugged.

Another thing could be the blend door which is located in the HVAC ductwork on the passanger side under the dash. If it isn't opening, the air doesn't pass across the heater core to provide heat.

Let me know if this helps or if you have other questions.

Joe
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Friday, January 2nd, 2009 AT 12:52 PM

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