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Old 08-26-2012, 06:25 PM   #9
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: blown heater core

Quote:
Originally Posted by Boog View Post
One month since the repair and the vent temp problem is back. It will be going back to the shop tomorrow.
Do you think it is only a door misalignment causing it to go warm on the one side? Is the door actuator adjustable?
Its most likely the blend door is not fitting correctly in the plenum, Or its broke, Unfortunately the HVAC module will have to be removed again. & no the actuator is not adjustable

If they will not fix it....You can get by with "recalibrating" it when it acts up....

Place the ignition switch to the OFF position.
Remove the HVAC/ECAS fuse for a minimum of 10 seconds.
Install the HVAC/ECAS fuse.
Start the vehicle.
Wait 40 seconds for the HVAC control module to self-calibrate.

IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.
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