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2008 Chrysler Town and Country AC compressor

Tiny
DRCRUNCH
  • MEMBER
  • 2008 CHRYSLER TOWN AND COUNTRY
  • 3.8L
  • V6
  • FWD
  • AUTOMATIC
  • 96,000 MILES
It has been my understanding that the AC compressor should cycle when there is a call for cooling (AC is on), and when the defrost is on. I have noted that my compressor cycles when the heat is on also. I have checked to make sure that there is no snowflake visible on the control panel and that the setting is not to AC or defrost. Understand that I am not talking about a stuck relay or frozen clutch, the compressor and the fans cycle as if there is a call for cooling. Is this normal for this vehicle? Ie humidity control or something exotic? Is there a technical bulletin regarding this phenomenon?
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Wednesday, October 7th, 2015 AT 5:56 PM

3 Replies

Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
THE CLUTCH ONLY CYCLES WHEN THE HIGH SIDE PRESURE SENSOR READS OVER 250 0N THE HIGH SIDE HOSE.
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Thursday, October 8th, 2015 AT 4:17 AM
Tiny
DRCRUNCH
  • MEMBER
  • 1 POST
That doesn't answer my question. Why is the compressor running at all when the unit is on heat, no defrost, no A/C?
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Thursday, October 8th, 2015 AT 5:18 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
A FULL A/C SYSTEM DOESN'T DISENGAGE.1 WAY IS DISCONNECT THE CLUTCH ANOTHER WAY IS TO REV. THE MOTOR UP IN PARK A/C ON. WHEN U GET AROUND 3K TO4K IT DISENGAUGES DO TO PRESSURE. THE HEATER USES COLANTTHAT IS Y IT TURNS.
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Friday, October 9th, 2015 AT 2:55 PM

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