1988 Dodge Aries 2.2 AT 4dr Blue with grey interior does not produce heat
for defrost or heater. Cooling system has been flushed, Thermostat
replaced, Heater Control Valve replaced. I have flushed the heater core
(real easy to get to hoses on this car ) and it has good flow. I can
feel hot water at the core inlet and outlet hoses. I have pulled the
Control Head out, it is working properly. The only thing I can think is
that the heater door itself is stuck. How mush of a PIMA will it be to get
to that blend door?
Thanks in advance-
If the temp slide on the control moves, follow the cable to the arm of the
door to see if the door is moving. sometimes the cable will slide in the
hold down bracket making it feel as if the door is moving.
I have messed with this POS all day today. The Blend Door does open when i
pull the cable. So I decided to mess with the cooling system again and
discovered that the heater core is very clogged. I rigged a way to shoot
my garden hose into the heater core and i only get a trickle of water from
the outlet. I now need to know how to get to that heater core. I'm sure I
will have to remove dash, But Where do I get illistrations and
I figured that was your problem, start with getting a factory service manual
if possible, and yes the lower lower comes out, it has been to many years
for me to tell you how to do it, the last one I did was more then 1o years
I put that Zerex Super Flush in the heater core only and let it sit for
almost 24 hours. When I first started trying to flush it, i was getting a
small trickle. When I back flushed it the next day, It was flowing like it
It may not work to do this on your Aries, but it costs virtually nothing
but time. In about 1985, I had just gotten a 1974 Plymouth Valiant with
a 318 V8 and air conditioning, and found that the heater put out very
little heat due to a clogged heater core. I connected the heater hoses
in reverse to see if I could backflush it, more out of a "nothing to
lose" attitude than anything else. Some fiddling needed to be done,
since on that car the inlet and outlet pipes are different sizes, but
as soon as the engine had warmed up, a gratifying blast of hot air came
from the heater. I let it cool down, put back the hoses to their
correct positions, and flushed the cooling system. From what I flushed
out, apparently somebody had decided that if a little cooling system
stop-leak was good, a lot was better. With the cooling system cleaned
out and refilled properly, with no stop-leak, the heater always worked
fine on that car for years afterwards, til I sold it.
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