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  #1  
Old 12-20-2010, 06:14 PM
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Unhappy Repaired Automatic Climate Control Problem

Working with a 2002 Grand Cherokee.

Pulled the dash, heating/ac unit and replaced the broken bend doors, heater
core and actuators to be safe and when I got it back together it seemed
fine but after time went on passenger side got cool and now the driver’s side
went to the cool no mater the adjustment setting.

When trying to Calibrate it seems to turn the actuators to far and pop
and carry on and looks too make a complete round when looking at the
actuator with the glove box down.
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Old 12-21-2010, 07:53 AM
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Re: Repaired Automatic Climate Control Problem

With accumulators you mean the blend door actuators, isnīt it? The blend doors should have an end stop and when you do the calibration, the actuators should stop at the end stop, so the system knows this position. When the actuators move around completely, it seems that the end stops are broken. I have never opened this system myself, but probably someone who already did can tell you where to look at.
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Old 12-21-2010, 10:19 AM
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Re: Repaired Automatic Climate Control Problem

Interested to know how much time and work was involved in taking the dash apart for the fix. Most people seem to repair the problem by cutting a hole opposite the glove near the actuator and replacing the doors from that access hole.
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Old 12-21-2010, 01:12 PM
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Re: Repaired Automatic Climate Control Problem

it wasn't to bad im fixing to have to do it agin being the actuator in the rear not stopping, but i thought the stops where on the doors them self's once i get a min ill record the clicking and popping sounds going on with it
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Old 12-21-2010, 01:19 PM
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Re: Repaired Automatic Climate Control Problem

here are some pics i have taking so far and a video
Attached Images
File Type: jpg 100_1717.JPG (122.8 KB, 16 views)
File Type: jpg 100_1725.JPG (98.8 KB, 21 views)
File Type: jpg 100_1727.JPG (137.8 KB, 21 views)
File Type: jpg 100_1731.JPG (183.7 KB, 17 views)
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Old 12-21-2010, 01:49 PM
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Re: Repaired Automatic Climate Control Problem

imo, more than likely, u didnt get the stop pins on the doors correct. the blend doors have a pin, that acts as an open and close stop point. if they were set incorrectly, both doors have probably fallen into the down position causing cold air from both sides. check the heatertreater website for pics and instructions on how to properly set the door in place during installation. im sorry i dont have any pics myself on how to do this.
andy
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Old 12-21-2010, 05:30 PM
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Re: Repaired Automatic Climate Control Problem

the stop position is on the lever and the stops are set in the plastic
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Old 12-21-2010, 06:51 PM
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Re: Repaired Automatic Climate Control Problem

here is the front actuator popping and spinning when you pull it off u can move the door just fine and get heat


don't seem the youtube thing is working
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Old 12-22-2010, 07:03 AM
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Re: Repaired Automatic Climate Control Problem

So if the doors are ok, then only the actuator is left. Do you still have the old actuators? You could try one on the actuator behind the glove box (drivers side actuator).
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Old 12-22-2010, 11:12 AM
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Re: Repaired Automatic Climate Control Problem

wow! now I see why the glove box is the preferred method. lol

I thought I might be able to do this in a day since I haven't fixed my blend doors. I'll wait till spring for this project, for now, screw threw the glove box to prop the blend doors open it is!

GL, keep us posted!
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Old 12-22-2010, 05:54 PM
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Re: Repaired Automatic Climate Control Problem

K found the problem its the bend door levers not fitting properly in the actuators to make a snug fit, its like putting a 6 point 9/16 wrench on a 1/2 bolt and with the thin outer Dia it just deforms and slips inside i zoomed in on this video clip to show it better to bad i was able to wrap it with tape and get the front 1 to work but the back is still slipping


this is a bad part and would stay away from it Dorman 902-307
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