[DMCForum] Re: Heater...

["mw98gt" <mw98gt@xxxxxxxxxxx>]

So what should I check first?  The lines for kinks/clogs?  The 
heater core?  The valve?

Misha

--- In DMCForum@xxxxxxxxxxxxxxx, DMCVIN6683 <dmcvin6683@xxxx> wrote:
> You could also have a broken heater control valve located behind 
the 
> passenger side head of the engine.
> 
> Mark V
> 
> 
> On Monday, November 8, 2004, at 06:32  PM, ryanpwright wrote:
> 
> >
> >
> > Also - pull the rubber hoses off of the metal. There are four 
places
> > where this happens, 2 of these locations are at the front 
passenger
> > wheel, the other two are at the rear passenger side under the
> > removable sheetmetal plate thing. (Careful, there are also A/C 
lines
> > running here - don't open those!)
> >
> > Once you have the rubber hoses off, check for restrictions. I had
> > deposits formed at each end of both supply & return metal heater 
core
> > lines that were acting as "caps" - I didn't even notice them the 
first
> > time I had the hoses off. For some reason I ended up pulling 
them off
> > again and while feeling around in there, felt that the pipe 
seemed
> > rather solid, instead of hollow. I used a piece of wire to break 
up
> > the debris and a blast of air at 90psi to clean the pipes out. 
Careful
> > here that you don't vaporize the old nasty coolant here. I'd go 
with a
> > less intensive burst of air to get the coolant out intact, then 
hit it
> > with 90psi to get the remaining gunk out.
> >
> > -Ryan
> >
> > --- In DMCForum@xxxxxxxxxxxxxxx, "Walter Coe" <Whalt@xxxx> wrote:
> >> Misha, now that you have felt the pipes running along the
> >> frame and feel that they are not getting hot, this tells you
> >> that little or no coolant is circulating there.  Next is to
> >> find out why.  Like Johnny said, you could have a plugged
> >> heater core.  Other things to check for:
> >>
> >> See if a previous owner bypassed your heater core.  If it
> >> was leaking, they might have just capped off the hoses going
> >> to it.  This could have been done at the heater core or
> >> closer to the engine.
> >>
> >> Look for a kinked or crushed tube or hose.  This could be
> >> one of the aluminum lines running along the frame, one of
> >> the brass lines on the heater core or one of the rubber
> >> hoses.
> >>
> >> Check that the heater valve is working properly.  This is a
> >> vacuum actuated valve in front of the engine (next to &
> >> under the ignition coil in the engine compartment).  If it
> >> has a problem, most likely it is stuck shut.  This valve
> >> should only close when the mode switch is on MAX.  It sends
> >> a vacuum signal to the valve causing it to close.
> >>
> >> Consider that maybe you have some hoses routed the wrong
> >> way.  Since you recently replaced your water pump you are
> >> more familiar with where the hoses go.
> >>
> >> Walt
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >

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