No heat

#1

My heater blows but won't get hot, I have changed the thermostat twice,
and the heatercore is not leaking. One hose from the radiator is cold, the
other is hot. Any help would be very appreciated.

#2

"ddp" <ddphil03 (AT) yahoo (DOT) com> wrote

Quote:

My heater blows but won't get hot, I have changed the thermostat twice,
and the heatercore is not leaking. One hose from the radiator is cold, the
other is hot. Any help would be very appreciated.

Sounds like a stuck blend door. What year and so on?

Al

#3

Actually, I just had the same problem.... What I did was take off the
intake and output hoses of the heater core, and put the compressor to it,
and a big glob of little rusty pieces and some black stuff came billowing
out. This even though I just flushed and filled this last fall. She was
just plugged up, so you might want to try the same trick. Not saying this
is what's wrong, but could be?

Regards,

Doug

"ddp" <ddphil03 (AT) yahoo (DOT) com> wrote

Quote:

My heater blows but won't get hot, I have changed the thermostat twice,
and the heatercore is not leaking. One hose from the radiator is cold, the
other is hot. Any help would be very appreciated.

#4

On Thu, 08 Feb 2007 20:50:11 GMT, "Doug" <DZappyNOSPAM (AT) hotmail (DOT) com>
wrote:

Quote:

Actually, I just had the same problem.... What I did was take off the
intake and output hoses of the heater core, and put the compressor to it,
and a big glob of little rusty pieces and some black stuff came billowing
out. This even though I just flushed and filled this last fall. She was
just plugged up, so you might want to try the same trick. Not saying this
is what's wrong, but could be?

Another old trick is the swap the hoses and reverse the flow through
the core. Also if you run enough antifreeze it will never clog up.
Lots of times 50/50 do not cut it long term.
-----------------
TheSnoMan.com

#5

"ddp" <ddphil03 (AT) yahoo (DOT) com> wrote

Quote:

My heater blows but won't get hot, I have changed the thermostat twice,
and the heatercore is not leaking. One hose from the radiator is cold, the
other is hot. Any help would be very appreciated.

Are both heater hose's hot? If not the core could be plugged

#6

On Thu, 08 Feb 2007 15:02:32 -0500, "ddp" <ddphil03 (AT) yahoo (DOT) com> wrote:

Quote:

My heater blows but won't get hot, I have changed the thermostat twice,
and the heatercore is not leaking. One hose from the radiator is cold, the
other is hot. Any help would be very appreciated.

sounds like the heater control valve under the hood, if your vehicle
has one. would be helpful to know that or even what kind of truck /
car you are asking about.

-----------
Elbert
ask (AT) me (DOT) com

#7

make sure you have enough water in the radiator.
otherwise it will not circlate through the heater core properly.
old john

"ddp" <ddphil03 (AT) yahoo (DOT) com> wrote

Quote:

My heater blows but won't get hot, I have changed the thermostat twice,
and the heatercore is not leaking. One hose from the radiator is cold, the
other is hot. Any help would be very appreciated.

#8

In article <X6mdnVMMsvcPYFbYnZ2dnUVZ_rGinZ2d (AT) comcast (DOT) com>,
<ajeeperman (AT) comcast (DOT) net> wrote:

Quote:

"ddp" <ddphil03 (AT) yahoo (DOT) com> wrote in message
news:4a50fb6452492206b28e092d2032c336 (AT) localhost (DOT) talkaboutautos.com...

My heater blows but won't get hot, I have changed the thermostat twice,
and the heatercore is not leaking. One hose from the radiator is cold, the
other is hot. Any help would be very appreciated.

make sure you have enough water in the radiator.
otherwise it will not circlate through the heater core properly.
old john

Sheer genius.

#9

On Fri, 09 Feb 2007 02:00:12 GMT, SnoMan <admin (AT) snoman (DOT) com> wrote:

Quote:

On Thu, 08 Feb 2007 20:50:11 GMT, "Doug" <DZappyNOSPAM (AT) hotmail (DOT) com
wrote:

Actually, I just had the same problem.... What I did was take off the
intake and output hoses of the heater core, and put the compressor to it,
and a big glob of little rusty pieces and some black stuff came billowing
out. This even though I just flushed and filled this last fall. She was
just plugged up, so you might want to try the same trick. Not saying this
is what's wrong, but could be?

Another old trick is the swap the hoses and reverse the flow through
the core. Also if you run enough antifreeze it will never clog up.
Lots of times 50/50 do not cut it long term.
-----------------
TheSnoMan.com

Actually, I have had 100% antifreeze clog the heater core of a 1986
Mazda B-2000 so that theory is KA-PUT
-
Regards
Gordie

#10

The Nolalu Barn Owl wrote:

Quote:

Another old trick is the swap the hoses and reverse the flow through
the core. Also if you run enough antifreeze it will never clog up.
Lots of times 50/50 do not cut it long term.
-----------------
TheSnoMan.com

Actually, I have had 100% antifreeze clog the heater core of a 1986
Mazda B-2000 so that theory is KA-PUT

Careful! This is one of Snomaggot's favorite little tricks
of the trade! Run more then 50/50 and all will be well
in your world (and cooling system)....heh heh...

Ian

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