[urq] '83 A/C, burnt wiring smell

[djdawson2 at aol.com]

Yeah... somehow it almost seems "wrong" to have A/C in an urq, as I've never had it before.  My first attempt at reviving the A/C in an '85 worked for about 2 weeks, then the York unloaded.  My second '85 has had the system removed, but I'll reinstall it at some point.  The system in this '83 works very well... hopefully the compressor will last a while.
 
Dave (the older I get, the more I want A/C)
 
 
-----Original Message-----
From: james.pasqualoni at gs.com
To: i.rautenberg at waratap.com; djdawson2 at aol.com
Cc: urq at audifans.com
Sent: Tue, 18 Jul 2006 4:52 AM
Subject: RE: [urq] '83 A/C, burnt wiring smell


Same here-I never even tried to get the AC running due to the empty,
melted relay socket in the glove box.  Whoops. 

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On
Behalf Of Ingo Rautenberg
Sent: Monday, July 17, 2006 11:26 PM
To: djdawson2 at aol.com
Cc: urq at audifans.com
Subject: Re: [urq] '83 A/C, burnt wiring smell

Yes.  There is a relay behind the fusebox that gets really, really hot.
Can't say exactly which, but I seem to recall it's the 2nd or 3rd from
the left with the glovebox removed.  Not sure whether the relay in my
case was defective, but I DO KNOW it was melting its socket.  In my case
when I slowed down the whole interior of the car filled with smoke and I
quickly removed the relay (which was useless in a car with AC system
removed).  Don't have the IST documents in front of me, so I'll let
someone else chime in...

Ingo

On Jul 17, 2006, at 7:34 PM, djdawson2 at aol.com wrote:

> Again, on my "new" '83...
>
> After a few hours of chasing wire routing, and after evacuating and 
> recharging the system (R406a, BTW), I now have an excellent performing

> A/C system in this '83.  However, now that the A/C is working well, I 
> am getting the familiar early car stink of hot/ burning plastic wire 
> insulation inside the car after the A/C has been on for about a half 
> hour.  Turn the A/C off, and the stink quickly goes away.
>
> My thoughts...
>
> When the A/C is on, the cooling fan on this car runs at a moderate 
> speed... full time.  This is the only additional electrical accessory 
> that operates when the A/C is on, except for power to the compressor 
> clutch itself, which is a fairly low current.  My thought is that the 
> source of the hot wires must be something linked to the cooling fan 
> system, but as yet, have been unable to actually locate the hot wires.

> My other thought is that maybe the fan itself is drawing too much 
> current due to its age, even though it spins pretty freely by hand.
>
> Any '83 gurus have any suggestions on where to start looking?
> Thanks,
> Dave
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