[s-cars] No Heat at Idle?

[Bob Rossato]

Not necessarily.  Depends on where the air pocket is.  In any case, if
you're not getting heat at idle then obviously you're not getting enough
coolant flow at low rpms.  Either there is a blockage of flow due to an
air pocket, your heater core is blocked due to corrosion or scale
buildup, or the water pump impeller has eroded away and you're not
getting enough pumping action at idle.  It's much easier to add some
coolant, even though the level may look normal, to rule that out before
you dive into a water pump or heater core replacement.  Just keep adding
coolant until it's obvious it's just going to overflow if you add more.

Just a thought anyway.

Bob 

> -----Original Message-----
> From: s-car-list-bounces at audifans.com 
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Brent Henry
> Sent: Sunday, January 02, 2005 3:21 PM
> To: Bob Rossato
> Cc: s-car-list at audifans.com
> Subject: Re: [s-cars] No Heat at Idle?
> 
> 
> Thanks Bob,
> 
> I will check the coolant level, but last week when I checked, 
> it was good.
> If there was an air pocket wouldn't that cause the coolant 
> temp gauge to
> read low as well?  The temp gauge is reading normal.
> 
> Brent.
> ----- Original Message -----
> From: "Bob Rossato" <bob.rossato at att.net>
> To: "Brent Henry" <thehenrys at sympatico.ca>; <v6-12v at audifans.com>
> Cc: <s-car-list at audifans.com>
> Sent: Sunday, January 02, 2005 2:08 PM
> Subject: Re: [s-cars] No Heat at Idle?
> 
> 
> > Sounds like an air pocket.  How's your coolant level?  Even 
> if the coolant
> level looks okay you should try adding some as it would help 
> remove any air
> pockets that might be in the system.  If the level readjusts 
> after driving
> around, just keep adding a little bit daily until the level 
> no longer drops
> down, though make sure you don't have any leaks as well.
> >
> > Bob
> >
> >  -------------- Original message ----------------------
> > From: "Brent Henry" <thehenrys at sympatico.ca>
> > > I have a 1995 A6Q 2.8, up until this year, the heater has been
> fantastic...
> > > very hot regardless of the temperature outside.  Which is great in
> Canadian
> > > winters.  However, this year, the heater blows cold air 
> while the car is
> idling
> > > (even with the engine up to normal operating temp)?  Once 
> I begin to
> drive,
> > > the hot air begins to blow just like normal?
> > >
> > > What could be causing this?
> > > Brent Henry.
> >
> 
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