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Heater/AC will not blow correct

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  #1  
Old 03-24-2008, 12:37 PM
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Default Heater/AC will not blow correct

I have read posts on this before but I never really found an answer .. so before I call the dealer ... I wanted to ask ....

My 2001 Durango will blow great out of the defrost vents and the very rear vent... It will do this on no matter what setting the directional control is on .... When I turn it on defrostor/AC however the compresser will engage like normal .. just the airflow is not getting diverted correctly ... I am assuming it is just a blend door problem ...

So is it a linkage or a motorized control that is broken ? Is it easy to get to ? Do I have to remove the dash ?

Thanks
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Old 03-24-2008, 05:52 PM
Duranged408 Duranged408 is offline
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Default RE: Heater/AC will not blow correct

So pretty much your saying that, fan speeds and temperature are working, just not the direction of air flow? Are any sounds made when cycling through the points? Dont quote me but if it is like my 99 your settings are controlled via vacuum hose and would suggest looking for a leak.
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Old 03-24-2008, 06:02 PM
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Default RE: Heater/AC will not blow correct

Checking out dak-dur i came along a tab for checking the vaccumm reservoir. Its at the bottom of the page. http://www.dakota-durango.com/forum/...ad.php?t=46154
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Old 03-24-2008, 08:22 PM
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Default RE: Heater/AC will not blow correct

I played around with the controls some and here is what I have found ...

When I turn the "directional" selector to any setting floor,vent, defrost ect ... I hear what sounds like a electric motor noise or it could be some sort of air actuated device also .. I do hear a "changing" sound everytime I change the selection.. it does not sounds the same everytime... meaning some are short and some are long movements..... it makes the same sound everytime I go back to a certain setting...

I have no air to the floor, barely any air to the front vents .. seems like all or most of the air it going out of the dash defroster vents this does not change no matter what setting I put it on .. the very rear heat seams to work ok ....The vents half way back on each side for the middle area does not blow hot air but always blows cool air ... the rear controls however will adjust the heat for the very rear just fine ...


Is some sort of linkage off or something ?

Thanks

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Old 03-26-2008, 02:29 PM
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Default RE: Heater/AC will not blow correct

I would say it is a linkage problem if you can hear the vacuum and motorized movement when changing selection.

This happened to my 93 camry. Everything works except for the air flow direction. Sad thing was, we had to tear down the dash to get to the A/C assembly and voila, saw the linkage arm came off. This repair costed me a couple hundred bucks mainly in labor because of the entire dash removal. Otherwise, it would have been a quick 2 second fix.

i am almost sure that for you to repair this possibly similar issue on the Durango, the dash will have to come out to get to the A/C core assembly unit. My buddy removed my dash on the Durango to replace my heatercore and it was a 4-6 hour tear down job.

If you have to go this route to address your issue, this is a good time as any to inspect and possibly change out your heatercore, otherwise, you may end up tearing down the dash again to replace the heatercore in the future.
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Old 04-03-2008, 03:00 PM
Justin_98Durango Justin_98Durango is offline
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Default RE: Heater/AC will not blow correct

I am new to the forum, but the thing I had a problem with was the same on my 98. There is a vacuum line that came up hooked in the engine compartment. It is on the fire wall and runs through the area that the heater core hoses go through. The line that it came unconnected from was laying down into the engine compartment a little further so you may have to feel around a little bit back in there to find it.

If that doesn't work, then you may have a problem with another area of vacuum under the dash or other area in the line, just have to run the heater on and listed for a leak.
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Old 04-03-2008, 03:45 PM
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Default RE: Heater/AC will not blow correct

I wasn't able to find any lines near the heater core hoses .... (drivers side) Also i think I just found out my AC compressor is shot ... It is real loud when i turn it on ... I added freon (little low) and it quieted down a little .. I added red dye and could not find any leaks .... I think the compressor is shot .... Would this have anything to do with the air direction? I figure it would not bit does not hurt to ask ...



Any other ideas ?
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Old 04-04-2008, 09:04 AM
Justin_98Durango Justin_98Durango is offline
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Default RE: Heater/AC will not blow correct

None that I can think of, I just know that a similar thing happened to me, my front bearing went out of the AC compressor and I currently have it bypassed to keep from shreading the belt.

As for the direction, I am not sure on the 01's? Is yours the 4.7? If so, you may want to get a chiltons or haynes and try to run down the relays and vacuum to see if you can find a problem in your switch.
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  #9  
Old 04-08-2008, 08:17 PM
dwhisnant dwhisnant is offline
 
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Default RE: Heater/AC will not blow correct

This was the culprit for my A/C and Heat only blowing through the defrost. The left tube was unattached and therefore there was no vacuum. Not sure if this might be similar to your issue. A picture is work 10 words...



[IMG]local://upfiles/87758/8B9FF6F02DA24B609A647655BCFF1EC8.jpg[/IMG]
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Old 05-21-2009, 01:26 PM
ranger473 ranger473 is offline
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dwhisnant,

I have the same problem and on your post you had posted a photo (I think) but the link is no longer active. Would you mind sending me the photo and any additional info you can recall? My email is ranger473@gmail.com

Thanks!
Kim
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  #11  
Old 12-15-2009, 08:03 PM
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Quote:
Originally Posted by big_b_8888 View Post
I played around with the controls some and here is what I have found ...

When I turn the "directional" selector to any setting floor,vent, defrost ect ... I hear what sounds like a electric motor noise or it could be some sort of air actuated device also .. I do hear a "changing" sound everytime I change the selection.. it does not sounds the same everytime... meaning some are short and some are long movements..... it makes the same sound everytime I go back to a certain setting...

I have no air to the floor, barely any air to the front vents .. seems like all or most of the air it going out of the dash defroster vents this does not change no matter what setting I put it on .. the very rear heat seams to work ok ....The vents half way back on each side for the middle area does not blow hot air but always blows cool air ... the rear controls however will adjust the heat for the very rear just fine ...

This is the same problem I am having, except mine is stuck on the dash vents. I know this is an older post, but did you ever find the fix for this?
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Old 01-16-2010, 08:14 PM
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2002 Durango SLT

Mine does the same thing.
I had part of the dash apart on the drivers side, between the steering and center.
The actuator control is the problem. 2 pegs tracking in a wheel to open/close different vents. pegs popped out of the grooves they were to be in, causing flipper doors to not move.
Took a trip to Fla, AC worked good, then came winter. now its stuck in def.
So, back under the dash this spring I go. then to tackle the rear heat prob. I hear its kind of the same, only in the rear right side.

Do I have to remove the rear seat???
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Old 01-17-2010, 08:41 PM
ranger473 ranger473 is offline
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Default Stuck on Defroster

"revpete" has the answer for the problem I had - I just wasn't brave enough to dig that far into the dash. He (she?) has my admiration!
I took it into the dealer once and the mechanic "re-timed it" which is to say he set the pins or pegs back into the "cam wheel" that moves all the different flaps and doors. The "re-time" didn't work for long (I was warned by the mechanic) so I took it back in and they replaced the entire lower unit (which contains the cam wheel as well all the lower vents and ducts). I had some other work done at the same time and they gave me some discounts - I think the lower unit cost was about $850.00 or so. The new lower unit has been redesigned and eliminated the duct to the backseat... They didn't do anything to strengthen the cam mechanism so I think the same thing can happen again. I like the Durango but if I get a hint that this starts to happen again, I'll sell it and go back to Ford. Good luck!
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Old 12-03-2010, 03:07 PM
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Unfortunately, I did...and it isn't pretty.

I just looked for the records and I can't find that set - seems I have all the rest though - go figure. Anyhow, there is an actuator and cam that jumps out of the track it is supposed to ride in. The cam is what opens and closes the various doors to direct the airflow to various vents.
When I went in (local Dodge dealer) the mechanic did the trouble shooting and said there are two options:
1. Manually reset the cam and hopes it stays in track - maybe a 50 /50 shot or
2. Replace the entire distribution unit

I went went with option one for $142.50 and it worked for about a week... I then returned and had the distribution unit replaced for around $900.00 but that was with a big coupon as well as some other work (this is the paperwork I can't find...) The work was done over a year and half ago and it still works fine.

The new unit has some changes; the plastic around the cam unit that caused the original problem is slightly different and a little stronger, hopefully preventing the problem. It also eliminates the vent that goes to the back seat. That has not been a problem for us.

The job sounded bigger than I wanted to tackle and in hind sight, it was. I went into the dealer during the work and everything between the back seat and the windshield was removed - pretty interesting to see it that way... I did a close inspection when the work was complete and I could not find any fit and finish issues and everything worked except the lighter in the dash ashtray. They came out and fixed that (loose wire) while I waited and gave me a $15.00 discount for the trouble.

I am not clear on the total cost because of the other work but I would prepare for about a grand. If you are comfortable, and have the tools, time and expertise to remove that much of the interior, you could save quite a bit in labor but it is not something I can tackle.

Hope this helps!
Kim - 2001 Durango
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Old 12-03-2010, 03:12 PM
ranger473 ranger473 is offline
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Update to my own question...
I had the problem fixed at the local dealer but I just looked for the records and I can't find that set - seems I have
all the rest though - go figure. Anyhow, there is an actuator and cam
that jumps out of the track it is supposed to ride in. The cam is
what opens and closes the various doors to direct the airflow to
various vents.
When I went in (local Dodge dealer) the mechanic did the trouble
shooting and said there are two options:
1. Manually reset the cam and hopes it stays in track - maybe a 50 /50 shot or
2. Replace the entire distribution unit

I went went with option one for $142.50 and it worked for about a
week... I then returned and had the distribution unit replaced for
around $900.00 but that was with a big coupon as well as some other
work (this is the paperwork I can't find...) The work was done over a
year and half ago and it still works fine.

The new unit has some changes; the plastic around the cam unit that
caused the original problem is slightly different and a little
stronger, hopefully preventing the problem. It also eliminates the
vent that goes to the back seat. That has not been a problem for us.

The job sounded bigger than I wanted to tackle and in hind sight, it
was. I went into the dealer during the work and everything between
the back seat and the windshield was removed - pretty interesting to
see it that way... I did a close inspection when the work was
complete and I could not find any fit and finish issues and everything
worked except the lighter in the dash ashtray. They came out and
fixed that (loose wire) while I waited and gave me a $15.00 discount
for the trouble.

I am not clear on the total cost because of the other work but I would
prepare for about a grand. If you are comfortable, and have the
tools, time and expertise to remove that much of the interior, you
could save quite a bit in labor but it is not something I can tackle.

Hope this helps!
Kim
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Old 01-27-2013, 10:07 PM
Avanay22 Avanay22 is offline
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Default Similar Problem but not exactly the same!

I have done so much research and there are so many different answers but almost all are related to problems with the A/C. I have a 2001 Durango 4.7L 4WD I do not have any trouble getting air to come from any of the vents the only problem I am having is that the floor heat blows extremely cold. It never gets warm the upper vents blow hot enough to make us sweat but the air coming through the florr vents are cold enough to have to sit on our feet. I have both front and rear controls and I am told that there is an upper and lower blower motor, I am going to start by replacing the lower blower motor relay that is 15.00 to see if that changes anything, but any other suggestions would be so helpful. The heat was working just fine I went into 7-11 and when I came out turned the heat back on it was blowing cold. I was told that if it were the motor it wouldn't have just stopped so suddenly. So any help will be appreciated.
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Old 01-28-2013, 05:58 AM
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Default

there is a front and rear blower motor, however if allthe speeds are working fine on them then the resistor is fine, it almost sounds to me like the air isnt mixing properly when you put the heat on feet, i would look at an actuator problem.

P.S. since your problem is different you should have made your own thread to eliminate confustion in this one
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Old 01-30-2013, 07:12 PM
Avanay22 Avanay22 is offline
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Default Sorry

Quote:
Originally Posted by shrpshtr325 View Post
there is a front and rear blower motor, however if allthe speeds are working fine on them then the resistor is fine, it almost sounds to me like the air isnt mixing properly when you put the heat on feet, i would look at an actuator problem.

P.S. since your problem is different you should have made your own thread to eliminate confustion in this one
Sorry for the confusion I should have made a new thread. I will copy this and do just that but I did want to say that while the floor air vlows cold it does not change speeds its a constant cold draft as if is is pulling cold air in from outside as if a vent is stuck open.
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Old 01-30-2013, 07:12 PM
 
 
 
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1999, 2001, air, blowing, controls, darango, defrost, dodge, durango, heater, heaterac, hot, stratus, work

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