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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old June 15th, 2004, 15:25   #1
tdibigd
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Join Date: Feb 2003
Location: Dallas, TX
Fuel Economy: 44/41/37
Default How much refrigerant?

Replaced my A/C compressor the other day. Can anyone verify the R134 capacity of the Jetta TDI A/C system? I've heard 2 different figures - 24 ounces and 41 ounces.

Anyone know for sure?

See pictures of my mangled compressor clutch in the A4 maint. forum.
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Old June 16th, 2004, 04:48   #2
stayalert
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Join Date: Jul 2002
Location: VT, USA
Fuel Economy: mid forties
Default How much refrigerant?

paper bentley says 24.7 + 1.8oz I don't know why it says plus 1.8..
Rob M Concord, MA
I'm frantically trying to fix a non-functioning mag. clutch...don't know yet why its not working...could be low pressure, could be something else..any thoughts that may help my effort??
Rob M Concord, MA
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Old June 16th, 2004, 04:55   #3
stayalert
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Join Date: Jul 2002
Location: VT, USA
Fuel Economy: mid forties
Default How much refrigerant?

paper bentley for '99 -02
rob M
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Old June 16th, 2004, 14:45   #4
ZX1100F1
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Join Date: Nov 2003
Location: Daluth, MN
TDI(s): none
Default How much refrigerant?

the "+ 1.8oz" is in reference to oil.
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Old June 17th, 2004, 15:34   #5
professor
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Join Date: Jan 2001
Location: Edina, Mn USA
Default How much refrigerant?

I would expect that there is a pressure switch that keeps the compressor from running if the ref. level is low. It is designed to keep it from running if it can't circulate the oil. If the ref. is only slightly low, the compressor short-cycles because of this switch. There should also be an anti-ice switch on the evaporator, which controls the compressor.
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