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Registered
1999 Deville base
Joined
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58 Posts
Discussion Starter #1
drivers ac vent by window and center vent on drivers side only blow warm air, not hot but warm and passenger side vents all blow cold air with ac on. is this a mode switch or solenoid and if so where is it located, thanks for the help......oh, 99 deville.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,293 Posts
drivers ac vent by window and center vent on drivers side only blow warm air, not hot but warm and passenger side vents all blow cold air with ac on. is this a mode switch or solenoid and if so where is it located, thanks for the help......oh, 99 deville.
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either a mix door is not functioning properly -
or could be low on freon -

check BOTH the high side and low side pressures -
and report your findings -
 

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Registered
1999 Deville base
Joined
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58 Posts
Discussion Starter #3
forgot code is P0603H, B1340H, B1341H, these all appear to be air mix door 1 and 2 movement problem and blend door problem so what do I look at to fix and where?? thanks
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
Joined
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86,795 Posts
Have you tried running the temp from 60-90 and back a few times to exercise the air mix doors in the event they are sticking? Sometimes you can get lucky and that may help.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,293 Posts
forgot code is P0603H, B1340H, B1341H, these all appear to be air mix door 1 and 2 movement problem and blend door problem so what do I look at to fix and where?? thanks
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these all appear to be.....................
always include the specific definition with the specific code -
 

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Registered
1999 Deville base
Joined
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58 Posts
Discussion Starter #6
that is all that was written at the website i looked at. where are these blend doors located?? i will try running the temps from 60-90, thanks for advice.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,293 Posts
that is all that was written at the website i looked at. where are these blend doors located?? i will try running the temps from 60-90, thanks for advice.
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that is all that was written
hmm -
well - they are all H - so I'd just clear them -
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
Joined
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86,795 Posts
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