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SUVs Jeep Cherokee and Jeep Grand Cherokee Jeep Grand Cherokee A/C Heating Ventilation
372 messages, Last post on Oct 27, 2009 at 2:04 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee Forum. Your Hosts are steve_ & tidester
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Replying to: heatertreater (Apr 24, 2009 10:54 pm)
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Replying to: matthewbowes86 (Apr 27, 2009 2:02 pm) HeaterTreater |
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Replying to: matthewbowes86 (Apr 24, 2009 5:24 pm) That has given you an excellent place to start Your description in post #316 of the air flow only comes out of the vents when driving and nothing when stopped. That sounds like you could also have a blower problem. Can you hear the blower working? Can you hear the blower working and no air is coming out of the vents. (When the vehicle is NOT moving) If this is happening – that is a symptom of the broken recirculation door - not a blower motor problem. In your previous post #323 your fault codes were 52, 54, 56. The #52 is a recirculation door problem. The 54 is the driver’s side blend door problem and the #56 is the passenger’s side blend door problem. As you probably already know, replacing the blend doors requires the HVAC box to be removed from the vehicle and taken apart. Most of the labor cost is in process of removing and replacing the HVAC box. So about the only thing you could tell the mechanic is that you have read the fault codes and replacing anything more then the recirculation door and the blend doors will require you to visually check the part before giving approval. Good Luck |
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I have a 1995 Jeep GC limited with a ATC heat AC system. The blend door motor goes to the hot air extreem and will not return. The blend door motor has a 5-pin connector. My Haynes service manual does not show the wiring diagram for this system. I found an old 2-pin motor made up a polarity revearse switch with a momentary push button to apply power. With the 2-pin motor installed the switch in one position holding the push button for 8-seconds (the time it takes for the motor to travel from one extreem to the other) gets me hot air. Selecting the reverse polarity on the switch haolding the pushbutton for 8-seconds get me very cold air. So my heat and AC systems are working and I am left with a controller problem. I beleive the blend door 5-pin motor should be controlled by the temperature control dial. Could anyone tell me where I could get a wiring diagram for the ATC showing the 5-pin blend dooor motor? Mikes_fixit
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Replying to: mikes_fixit (May 11, 2009 3:16 pm) HeaterTreater |
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| I have a 2000 Jeep GC limited. Within the last two days, the vents on the driver's side of the vehicle will only blow hot air (with a/c on, or venting fresh outside air). The passenger side works fine. I've scanned this post and wonder if this is a blend door issue? Haven't tried the error codes yet, but will later this week. Any thoughts? | |
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Replying to: skinsfan1 (May 19, 2009 3:23 pm) Blen Dor
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Replying to: blendor (May 19, 2009 3:42 pm)
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Replying to: skinsfan1 (May 19, 2009 5:48 pm) It sounds like the door is broken, but jammed such that it is constraining the axle. Either way, the diagnosis is definitive for blend door failure. The only component in the system that differentiates the temperature between the passenger and driver's side is the blend door, so you can be confident of the diagnosis. There is a professionally designed aftermarket fix for this problem that is easy to install and will make a permanent repair to the system. Search the internet for installation video's and a site with more definitive information. HeaterTreater |
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