Heating/cooling

Tiny
ORLAG
  • MEMBER
  • 1999 SAAB 9-5
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 125,000 MILES
HVAC doesn't work as it should.I can feel air coming from each vent but is the same temperature as the ambient. When I'm adjusting it from low to high or vice versa always stays as the ambient temperature. Any ideas?
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Thursday, December 16th, 2010 AT 7:51 PM

7 Replies

Tiny
MNTHNY4
  • EXPERT
DID U CHECK YOUR A/C FUSE IN THE ENGINE BAY FUSE PANEL IF BLOWN, NOTE THAT FUSE ALSO CONTROLS THE ALARM SIREN, I HAVE SEEN PEOPLE TAKEN THIS FUSE OUT BECAUSE THE SIREN KEEPS GOING OFF INTERMITENTLY, THEN THEY COMPLAINT THAT A/C IS BLOWING WARM, IF FUSE IS GOOD THEN CHECK IF COMPRESSOR CLUTCH WORKING [JUMP A/C RELAY ] & LISTEN FOR CLUTCH ENGAGEMENT, IF GOOD, THEN CHECK A/C FREON LEVEL, POST BACK AFTER U HAVE CHECKED ALL THIS & LET ME KNOW.
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Wednesday, February 2nd, 2011 AT 7:01 PM
Tiny
ORLAG
  • MEMBER
Thanks for the reply. I'll check all of the suggested faults this coming weekend and let you know what I have find out. Also another suggested fault was my AC climate control unit. I did pressed 0 and off and the code was 0. Can this unit still be faulty? Thanks again for the respond. I appreciate it.
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Thursday, February 3rd, 2011 AT 2:50 PM
Tiny
ORLAG
  • MEMBER
Also let me explain a bit more about the problem. It is not just the AC not blowing cold but also the heater doesn't blow hot. I can set it on 60F or 80F and it will blow air with same temperature. While I'm adjusting temperature the air flow changes to but there isn't temperature change.
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Thursday, February 3rd, 2011 AT 3:21 PM
Tiny
MNTHNY4
  • EXPERT
OK LETS CHECK A FEW MORE CONPONENT FIRST, REMOVE YOUR LOWER DASH PANEL ON THE DRIVER SIDE [D/S] LAY ON YOUR BACK UNDER THE DASH, HAVE A HELPER ASSIST YOU BY ADJUSTING THE TEMP UP & DOWN WHILE U CHECK FOR MOTOR MOVEMENT, IF U HAVE MOTOR MOVEMENT BUT NOT CHANGE IN TEMP, LOOK UP INTO THE DUCT THAT THE AIR BLOW THROUGH FOR THE FLOOR SETTING, LOOK REALLY GOOD U SHOULD SEE A YELLOW SHAFT INSIDE THAT DUCT, CHECK IF SHAFT IS CRACKED, IF ALL THAT IS OK & U HAVE NO MOTOR MOVEMENT THEN U NEED A ACC CONTROL PANEL, DID U RECALIBRATE THE ACC PANEL BY PRESSING AUTO & OFF AT THE SAME TIME. POST BACK SOON AFTER CHECKING.
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Thursday, February 3rd, 2011 AT 7:48 PM
Tiny
ORLAG
  • MEMBER
Yes I did recalibration first. The only number shown is "0" left side of the screen. I'll check for motor movements next. I believe you are talking about blend door failure.
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Friday, February 4th, 2011 AT 6:24 PM
Tiny
ORLAG
  • MEMBER
Thanks for the respond again. Like I said I did recalibration first and only code "0" left side of screen. I removed the lower dash on d/s and locked under while helper was adjusting temp. Up/down. I can see rotation on motor and also rotation at the green shaft. The air coming out is at the same temp. With settings on 60F or 80F.
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Saturday, February 12th, 2011 AT 10:07 PM
Tiny
MATOHOR MICHAEL
  • MEMBER
My saab 95 1999 model ac so blowing heat air, I pressed the auto and off bottom, it displayed 08 code. What can I do to fix these problem.
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Saturday, August 13th, 2016 AT 10:44 AM

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