Unit blows cold but when on full temp it only blows warm
Check the blend door cable for proper attachment to the control panel and to the blend door. Try opening the door manually to see the you can get hot air out. If not, the door may be broken inside the heater box. If yes, correct/adjust the cable attachment for proper operation.
Fig. Side view of the control head and cable location. 1.
Footwell/defrost flap cable-2. Air distribution cable-3. Temperature
control flap cable
Fig. Temperature flap cable location and adjustment
REMOVAL & INSTALLATION
1990-97 Passat Models
Install
the cable ends marked with a white or blue band to the control head
assembly. The cables must be attached to the control head before
connection to the system air flaps.
This cable can be identified as follows:
Operates the mode/central air flap
Cable has a black sleeve and is 25.0 inches (634 mm) long
Cable is marked with a white band
This cable can be identified as follows:
Operates the temperature control/air blend cable air flap
Cable has a blue sleeve and is 21.0 inches (535 mm) long
Cable is marked with a white band
This cable can be identified as follows:
Operates the footwell/defroster air flap
Cable has a black sleeve and is 37.5 inches (954 mm) long
Cable is marked with a blue band
To troubleshoot this types of problem,click the link below
:----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the
issue.
------
Engine Overheats and heater
blowing cold?
http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
---------
Heat blows cold on drivers
side and hot on passenger side?
http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html
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No heat on car?
http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html
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Heater blows intermittently and temp
gauge goes erratic?
http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html------------Heater blows cold?
http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
---------Car heater blowing warm, but not
hot air?
http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html--------
Heater/AC blower motor not working?
http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html
------------
A/C, heater, defroster fan, not
working?
http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html
Heater problem?
http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html---------
This will help.Thanks.
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