defrost comes out the front vents

1988 OLDSMOBILE 98
28,000 MILES • 3.8L • 6 CYL • FWD • AUTOMATIC
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BKLYNG
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i have a Regency Brougham, when i switch to defrost it comes out the front vents.
Sep 3, 2016 at 10:21 AM
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HMAC300
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check for a vacuum leak the vacuum motor may not be getting vacuum or it is no good or a leak in line. see picture for diagram on where to check.
Sep 3, 2016 at 10:47 AM
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HMAC300
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forgot it, sorry.
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Sep 3, 2016 at 10:47 AM
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BKLYNG
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my climate control is electronic and where do i check do i drop the dash and what am i looking for?
Sep 3, 2016 at 11:49 AM
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HMAC300
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is this automatic temperature where you set the temperature? this is behind the dash some you may be able to just feel around to find it to see if a vacuum line is off or motor is working you may have to pull out glove box or a panel under to reach it.
Sep 3, 2016 at 12:15 PM
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BKLYNG
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i set the temp its digtal what do the look like so i would know what to look for
Sep 4, 2016 at 7:30 AM
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HMAC300
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ok if you set the temp it's a whole new ball game. see pic on how to test you may have to pull control panel out if you can't reach wires behind. this is for no air coming out a/c vents which from what I read is your complaint.
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Sep 4, 2016 at 7:42 AM
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HMAC300
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check the vacuum motors in arrow one may be under hood to access the top two try pulling glove box and panel below dash. You may have to pull dash to acces these check for no vacuum or motor bad. item 46 and 48 these control air direction in hvac unit.
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Sep 4, 2016 at 7:51 AM
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