Why no heat in 93 Concorde?

For some odd reason, I get no more hot air. I reset the automatic climate
control several times but that didn't help. The coolant is getting hot and
the rubber hoses that are connected to the fire wall are hot. The only
thing I can figure must be some sort of a valve that cuts the coolant on/off
but I don't know its location. Anybody? Thanks.

 

If it has the ATC system you need to have it calibrated with the scan tool,
take it to the dealer and just ask to has it recalibrated

Glenn Beasley
Chrysler Tech

 

You don't need a scan tool to reset the system. As the poster mentioned, he
recalibrated the ATC. Not being a "tech" as you are, he asked for advice in
his post where is the physical valve that cuts off the coolant from entering
the heater core. I am guessing you don't know because otherwise, how could
you have posted such a clueless post? Right? Here is a rule of thumb: If
you don't know it, don't post it. OK, Mr. Tech?

 

If the pipes to and from the heater core that are connected to the firewall
are
getting hot, then that means there's water flow. And if there's water flow
then
obviously the coolant cut off valve is OPEN, doofus!

While I don't know the system and cannot offer advice other than the obvious
of he needs to get himself a factory service manual and follow the
troubleshooting
steps, I will say that since his problem is that he is not getting any more
hot air,
he obviously came to the right place for some more!

Ted

 

Ok Mr Mopar let me spell it out for you ok. You do need a scan tool to
calibrate the system because there is no water valve, there are no vacuum
hoses it is all controlled by electric motors and doors.
There is no way to reset the system by disconnecting the battery. It has to
be done with a scan tool. As you say" I am guessing you don't know because
otherwise, how could
you have posted such a clueless post? Right? Here is a rule of thumb: If
you don't know it, don't post it. OK, Mr. Tech?"............ You should try
taking your own advise Mr Mopar.

Glenn Beasley
Chrysler Tech

 

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---------------------snip-------------

Then why bother posting if you have nothing to offer?

 

Ted Pass this on to doofus

Ok Mr. Mopar let me spell it out for you ok. You do need a scan tool to
calibrate the system because there is no water valve, there are no vacuum
hoses it is all controlled by electric motors and doors.
There is no way to reset the system by disconnecting the battery. It has to
be done with a scan tool. As you say" I am guessing you don't know because
otherwise, how could
you have posted such a clueless post? Right? Here is a rule of thumb: If
you don't know it, don't post it. OK, Mr. Tech?"............ You should try
taking your own advise Mr. Mopar.

Glenn Beasley
Chrysler Tech

 

maxpower wrote:

All true...

Again true...

And that's where you make your bloomer. According to the
Chrysler-printed factory service manual for my '93, holding down a
combination of keys on the ATC control head will put it into a
self-calibration cycle that will sense all the blend door travel limits
and re-set the parameters in the firmware. No scan-tool needed.

The fact that this didn't work suggests that perhaps a blend-door servo
is not operating correctly. A scan-tool might be able to detect this.

 

Yes Steve you are correct, there are 2 ways to calibrate using the DRB and
the holding the floor/mix and defrost button at the same time. It will give
you a code but will not give you the input and out put readings if there is
a problem

Glenn Beasley
Chrysler Tech

 

Both of you are right. But, if something is malfunctioning with the blend
door, you'll get a code 23 from the ATC which means that the automatic
temperature control valve in the blend door has a feedback failure and that
means that either the door is stuck because the stepper motor is not working
or, maybe something is disconnected or broken and therefore the logic for
the code 23.

That being said, it would be great help for me and I would greatly
appreciate if either of you told me how can I get to that blend door to look
at it. Who knows, maybe I can fix it. My wife called the dealer this morning
and asked for an estimate for fixing a code 23 in the blend door. They told
her to bring the car in so they can hook it up on the computer for a cost of
$90. I told my wife to tell them not to hold their breath.

 

This is funny now you want help?? "I am guessing you don't know
because otherwise, how could
you have posted such a clueless post? Right? Here is a rule of thumb: If
you don't know it, don't post it. OK, Mr. Tech?"

Now I will tell you, dont hold your breath for my help



Who knows, maybe I can fix it. My wife called the dealer this morning

 

Mopar wrote:

Sorry, I can't help you on that one. I've (thankfully) never had to go
further into the HVAC on my wife's 93 than replacing the fan speed
control amplifier.

 

The part you are looking for is about 6" in from the ATC and 3" left. You'll
see
two obvious things: an arm hooked to the blend door (the blend door is
hidden
in the heater housing, and a wire harness connected to the motor itself.
Make sure the wire harness is connected and if it is, make sure the hinge
didn't drop out of the blend door. If everything is fine, remove the stepper
and have someone check it for proper rotation.

 

I will say this - the blend actuator is pretty cheap considering what all it
is. It's like $65 across the counter. If you had a mechanic friend you could
probably get it cheaper.

I paid that much at teh Chrysler dealer for a ~hunk of rubber~. Not kidding.
Wasn't even a very big hunk.