Re: 2003 Deville ac problem
So my ac went back to blowing warm out the drivers side vents and cold air out the passage side I think I may need to replace the door or something?anyone know what part I need and where it's located to replace it?2003 cadillac deville.
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FIRST - you need to DIAGNOSE the problem -
throwing random parts at a problem rarely solves it -
and is the most expensive method of repair -
you can try "exercising" all the doors -
just to be sure one isn't sticking -
set the fan to a low/medium setting -
so you can feel the air movement -
but also hear the air doors moving -
slowly change the MODE selector to each position -
floor - center - defrost -
several times -
them leave the MODE to the center vents -
so you can feel the air temp easily -
turn the passenger side control off -
turn the heat to 90* - slowly -
wait a minute -
then turn the temp down to 60*-
do this SEVERAL TIMES -
now you are ready to test the system -
use a thermometer to actually measure - and compare -
the air temps - left/center and right center vents -
they should be the same -
turn the temp up to 90* -
measure the temperatures - post the results -
turn the temp to 60* -
measure the temperatures - post the results -
now turn the passenger side temp control on -
you should get up to 5* hotter or colder than the "main" setting -
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check for codes -
ALL the actuators are monitored -
and if they are failing -
a code would be set -
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if there are no codes -
and a noticeable difference in
AC temps -
with the temp set to 60* -
put a real set of AC gauges on the system -
and post BOTH the high side and low side pressures -
typically the freon is just low enough to cause this symptom -
but not low enough to set a low freon code -