[V8] Heater Core Question

[Ingo Rautenberg]

Make sure you don't need a radiator as well.  Inferior cooling will cause
the parts of least resistance to self-destruct including heater control
valve and heater core.  If you're currently bypassing the heater core and
all is OK, then you should be good.  Otherwise, fix whatever the main
problem is before doing the heater core -- no need to do it again.

----- Original Message ----- 
From: "Klein, Nathan P" <nathan.p.klein at lmco.com>
To: <dsaad at icehouse.net>; <v8 at audifans.com>
Sent: Thursday, September 15, 2005 12:05 PM
Subject: Re: [V8] Heater Core Question


> I don't know for sure if it's bad or not.
>
> I'm just guessing that it's the heater core at the moment.
>
> I've had a ton of overheating problems.  One day, the water temp got up
> to 120+ C (gauge was all the way over), I heard a loud "POW!" from
> behind the dash, and smoke started billowing from the A/C and defrost
> ducts.  Actually, you could smell antifreeze out of the A/C vents for a
> few days before this happened, especially if it was rainy or humid.
>
> I haven't done the tear-down yet. So what would be the best way to tell
> that it is in fact a bad core?
>
> Sourced a new core locally for fifty bucks.  Don't think that it's OEM,
> so thanks for the pointers.  :)
>
> -----Original Message-----
> From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf
> Of dsaad at icehouse.net
> Sent: Thursday, September 15, 2005 10:09 AM
> To: v8 at audifans.com
> Subject: Re: [V8] Heater Core Question
>
> I just went through "heater core heck"
>
> Here is what I learned:
>
> Make sure it is bad. My problem in the end turned out to be a loose hose
> connection from the valve to the core. My OEM core is still good but I
> did not discover this until after the following:
>
> First I tried an all metal (brass) core. It did not fit too well, and it
> actually failed after a few months. It developed a leak in the core. I
> think this has to do with the fact it was brass, and electrolisys ate it
> up. In fact, there was a warning in the box that said this could happen.
> Go figure.
>
> Next I tried the aftermarket plastic/aluminium unit. It is still in
> there - but it stunk like crazy for months (by this I mean your eys
> would water and you had to open the windows). Some sort of toxic junk on
> it I suppose (it was made in China after all). It seems to be mostly OK
> now, which is good with winter comeing on.
>
> So - OEM is of course best but way expensive.
> Stay away from the brass.
> If you get the made in China unit (likely) clean it off with solvent
> before you put it in the car.
>
>
> Dave
>
> Quoting "Klein, Nathan P" <nathan.p.klein at lmco.com>:
>
> > Hey y'all,
> >
> > My partially severed finger is pretty much healed, so I'm going to try
>
> > to find out what's up with the heater core this weekend.
> >
> > I think this has already been answered, but I wanted to confirm before
>
> > I order the part:
> >
> > Is the heater core on the V8 interchangeable with the 100?  Any other
> > VAG cross-compatibility?
> >
> > There aren't many V8s down here (I've only seen one other in
> > Dallas-Fort Worth), so parts guys aren't too familiar with 'em.
> >
> > Thanks!
> > Nathan
> >
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>
>
>
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