1999 jeep grand cherokee dual climate control heats on drivers side but cool on pass side. Is there an easy fix till summer???

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 .

This is a chronic problem with Grand Cherokees. The blend doors inside the air box in the dash fail over time. This is caused by cheap plastic parts used by Chrysler that break easily.

Your problem is the forth Jeep I have seen like this in the past 2 months.

To check your climate control system for fault codes do this:

-Turn key to 'on'
-press and hold 'a/c' and 'recirc' buttons and turn drivers side temp knob clockwise one click.

Now the display will show 0 if no codes are present or one or more numbers if something is wrong.

You can check what these codes mean here: http://www.wjjeeps.com/climate.htm

Reply back with results.

It

ummm...well first try to flush your radiator and put some new antifreeze and hopefully this solves the problem but when yuh put new coolant let it run for like 20 mins...

Common Jeep problem. Blend doors are either jammed or broken. Dashboard removal is require to repair.

you have to get a new control panel which cost usually around 800 dollars. Mine is the same way but i haven't got it fixed i just took out the glove box and kept the switch to tell the motor to make it hot or cold air and put a screw in it and have it held on hot for the winter then ill taker it out in the summer and have it blow cold air

hi
check-out heatertreater.com, i had the same problem with my cherokee and bought the heater treater blend door repair kit. it really does work and you can fit it yourself in around half an hour. kit comes with all you need and full instructions..
hope this helps

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

This is obviously a heater system control problem, I beleive this system is vaccuum controled with vacuum acuators that open and close doors in response to the climate control system comands.

Listen for the sound of escaping air from under the dash board, esp on the drivers side. Look for any unattached hoses under the dash. From there if you do not see anything obvious, you will have to obtain a schematic of the HVAC system, understand it's opearation and then start testing the vacuum control devices. maybe more than you want to do.

Goos Luck

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.