[Vwdiesel] 84 Jetta AC question

[Nate Wall]

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** Proprietary **

High-pressure switch (turns fan on "High" has green, or green w/ white stri=
pe, wires.  The other switch is either a low pressure switch to prevent com=
pressor operation w/ low charge OR a temp switch that prevents compressor f=
rom operating below 40 degrees F outside. Don't know which, but the owners =
manual states A/C will not operate below 40 deg. F. It has brown or brown/w=
hite stripe wires.

Then there is a thermal cut-out switch screwed into the upper coolant hose =
flange on the head that has either green, or green/white stripe wires that =
cuts off the A/C compressor if the engine runs too hot.  Bentley diagrams t=
hese too.

--Nate
>>> James Hansen <jhsg at sk.sympatico.ca> 04/19/02 08:50AM >>>


On Friday, April 19, 2002 12:22 PM, EVEHART33 at aol.com [SMTP:EVEHART33 at aol.c=
om]
wrote:
> --
> [ Picked text/plain from multipart/alternative ]
> I transferred a good 1.5 NA out of my totaled 79 Rabbit into a 84 Jetta w=
ith
> a bad motor last year. This year I'm trying to get the air conditioning
> working but I'm having some problems. I had the system checked and charged
> with R134 and it worked fine for about 3 weeks then one day the high pres=
sure
> relief on the drier popped and I lost all the refrigerant. In trying to
> diagnose what happened I remember there were some "mystery" wires on the
> Jetta that I didn't have on the Rabbit. The way it's wired now the radiat=
or
> fan doesn't activate when the ac is turned on. I'm looking at the wiring
> diagram in Bentley but I'm confused. Should the fan stay on anytime the a=
c is
> engaged?
Yes it should, unless you have a sensor very near the condenser to regulate
this- turns on the fan when condenser is hot.  I've seen it both ways, but =
the
wires were there, meaning it was probably removed. You do have the high/low
pressure switches hooked up, to the A/C clutch circuit, right? Are those the
wires you are referring to?
-James

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vwdiesel at vwfans.com
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[ Converted text/html to text/plain ]
High-pressure switch (turns fan on "High" has green, or green w/ white stri=
pe,
wires.  The other switch is either a low pressure switch to prevent compres=
sor
operation w/ low charge OR a temp switch that prevents compressor from
operating below 40 degrees F outside. Don't know which, but the owners manu=
al
states A/C will not operate below 40 deg. F. It has brown or brown/white
stripe wires.

Then there is a thermal cut-out switch screwed into the upper coolant hose
flange on the head that has either green, or green/white stripe wires that =
cuts
off the A/C compressor if the engine runs too hot.  Bentley diagrams these
too.

--Nate
>>> James Hansen <jhsg at sk.sympatico.ca> 04/19/02 08:50AM >>>
On Friday, April 19, 2002 12:22 PM, EVEHART33 at aol.com [SMTP:EVEHART33 at aol.c=
om]
wrote:
> --
> [ Picked text/plain from multipart/alternative ]
> I transferred a good 1.5 NA out of my totaled 79 Rabbit into a 84 Jetta w=
ith
> a bad motor last year. This year I'm trying to get the air conditioning
> working but I'm having some problems. I had the system checked and charged
> with R134 and it worked fine for about 3 weeks then one day the high
pressure
> relief on the drier popped and I lost all the refrigerant. In trying to
> diagnose what happened I remember there were some "mystery" wires on the
> Jetta that I didn't have on the Rabbit. The way it's wired now the radiat=
or
> fan doesn't activate when the ac is turned on. I'm looking at the wiring
> diagram in Bentley but I'm confused. Should the fan stay on anytime the ac
is
> engaged?
Yes it should, unless you have a sensor very near the condenser to regulate
this- turns on the fan when condenser is hot.  I've seen it both ways, but =
the
wires were there, meaning it was probably removed. You do have the high/low
pressure switches hooked up, to the A/C clutch circuit, right? Are those the
wires you are referring to?
-James
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vwdiesel mailing list
vwdiesel at vwfans.com
http://www.audifans.com/mailman/listinfo/vwdiesel[1]

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