Re: [DMCForum] Re: Heater...

[DMCVIN6683 <dmcvin6683@xxxxxxxxx>]

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
>
>
>
>
>
>
>

Yahoo! Groups Sponsor

ADVERTISEMENT

---

Yahoo! Groups Links

• To visit your group on the web, go to:
  http://groups.yahoo.com/group/DMCForum/
   
• To unsubscribe from this group, send an email to:
  DMCForum-unsubscribe@xxxxxxxxxxxxxxx
   
• Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.