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

[Pasqualoni, James E]

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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