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Re: 2003 jeep grand cherokee limited, climate control. I...
Hi
you have faulty blend doors, try heatertreater.com they have a DIY kit that fixes the problem, it takes around half an hour to fix and works really well.
hope this halps
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You will have to check the flap operating controls behind the centre consol as anything could be wrong from a vacumn pipe to a operating mechanism ,even the computer controlling the climatic control .
If you have duel climate control, it sounds like the blend doors inside the heater box have broke. It is a rather large repair to do. If you don't have duel climate control, look for a broken, leaking or aged vacuum line under the battery try. Hope this helps.
same thing happened to mine at 2 yrs. old , the connecting arm on air mix positioner broke. The whole dash had to come out. Part was cheap but labor was huge. This is not a job for the do-it-yourself.
sounds like the blend door motro may be bad, this motor is screwed to heater box, there are a few of these motors one for pass/side for hot/cold air then one to control position of air like defrost or vent or floor, then the driverside cold/hot air, i think this motor is on driverside part of heater box, to make sure locate each motor while moving all controls until you spot the one that doesnt move, then remove it and move door manualy to see if you get heat, then replace that motor, hope this helps,
Hi.in the dash there are flaps which control's hot or cold, those flaps break and then you will only have cold air blowing. You will have to remove the dash and renew those flaps
look for Main A/C relay, look for fuses, or go to a/c shop and have gas check out, perhaps leaks, perhaps evaporator, perhaps condenser, but start for relay box on front passengers side, or fuses on same side
Hello, This is because your actuator door in the dash board is broken. its about $1000 to fix. Its a bad design flaw that Jeep used in their dual climate control. Many many many jeep owners have had this problem.
Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.
Go to engine compartment, locate heater control valve. It will have the heater hoses connected to it that pass into the firewall. Unhook actuation plunger on the control valve. This will allow the coolant to flow though the heater core at all times. Now you have heat. If you get too hot, you can control it by the hot/cold settings to adjust the heater door.
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