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Saab 9-5 Climate Control Questions

36 messages,  Last post on Jan 17, 2013 at 7:19 AM

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What is this discussion about? Saab 9-5, Heating / Cooling, Sedan, Wagon

Messages Page 1 of 4

#1 of 36 2001 Saab 9-5 climate control problem by danysdman

Oct 09, 2006 (1:04 pm)

I have a 2001 saab 95 se and half of the cars heat works the other doesnt only cold are comes out and its not a good feeling in the winter. Does anyone know how to fix that problem ? or whats wrong with it ? only the drivers side vents push cold air all others work fine even in the back.

#2 of 36 Re: 2001 Saab 9-5 climate control problem [danysdman] by Mr_Shiftright HOST

Nov 26, 2006 (9:41 am)

Replying to: danysdman (Oct 09, 2006 1:04 pm)
Usually these vents are directed by a vacuum control or "servo" device that opens and closes various vents and conduits depending on what temp you select. So if you have heat everywhere but one vent, AND that vent is blowing cold (that is, the vent hose underneath isn't disconnected), chances are you have a vacuum leak to a servo or a jammed servo that directs warm air to that particular vent.
 
So you'll need to clear a path to the servo unit that works off your heater core, I would guess. If you're adventurous, you might crawl under the dash and see if you can trace the driver's side vent back to the heater core and look for a loose vacuum line or some such. Can't really say how accessible your heater core area is on that car.

#3 of 36 2003 Saab 95 Climate Control by golfnut8

Dec 16, 2006 (2:04 am)

I love my Saab 95 although it's mainly used around town with only the occasional long trip.
 
On a long trip today I noticed that hot air was coming out of the centre console instead of cool air. It was a nice mild day with the outside temp ranging from 18C to 20C but with 18 C selected [on Auto setting] cool air was coming out of the front vents but much hotter air was coming out of the rear vent. If someone was sitting in the back seat they would be uncomfortably hot. I played around with various temp settings but couldn't stop warm air coming out of the rear vent.
 
I'll check with the service agent but I wonder if anyone else has experienced this problem and has a fix?
 
Incidentally the weather while quite warm was cloudy/overcast and I wonder if the sun sensor may have somehow confused the system.
 
Any comments/ideas would be much appreciated.

#4 of 36 2000 9-5 heater/fan does not work when the engine is warm by djlee4

Jan 14, 2007 (7:41 pm)

Hello,
I recently noticed a problem with my 2000 Saab 9-5 heater/fan. When I start the car "cold", the heater fan comes on and works fine as long as I'm driving. However, when I turn off the car for a few minutes to an hour (not long enough for the engine to cool?), when I restart it, the fan does not blow at all - even when I manually punch it up to max. This is very hazardous in Minnesota - tonight I had no defrost after a trip to church! Anyone seen something like this? Thoughts on what to troubleshoot?
Thanks,
-Jeff

#5 of 36 Climate control woe's.... by SPYDER98

Feb 01, 2007 (8:40 pm)

Try pressing the Auto+Off buttons simultaneously. It'll run a self diagnostic and display codes if there's any issues outside of code zero. It'll also recalibrate the system as well.
 
If you see a code 08 pop up, take a deep breath before hearing the dealer estimate!!
 
Google 'saab 9-5 code 08' for alternative fixes.

#6 of 36 Re: 2000 9-5 heater/fan does not work when the engine is warm [djlee4] by sweetseet

Apr 06, 2007 (8:45 am)

Replying to: djlee4 (Jan 14, 2007 7:41 pm)
Sounds like the resistor for the fan. Not too expensive, I had the same problem.
 
Good luck.

#7 of 36 1998 SAAB 9-5 heater problem by joncragg

Jan 20, 2008 (3:19 am)

My Saab 9-5's heater has stopped working. When it stopped, it briefly worked again after turning it off and on again but know it is only blowing out enough hot air to eventually clear a small circle at the bottom of the windscreen. I havre tried the auto and off button diagnostic check and the code " 0 " comes up on the display. Any ideas what the problem could be ?

#8 of 36 Re: 1998 SAAB 9-5 heater problem [joncragg] by eurospecialist

Jan 22, 2008 (10:14 am)

Replying to: joncragg (Jan 20, 2008 3:19 am)
It is what is called a bad heater box and fairly expensive $1500-$1800. it distributes the heat/air evenly throughout the passenger compartment. The parts are not that expensive, but the entire front console (climate control, stereo, transmission shifter, etc) needs to be pulled out of the car to get to it. It takes approx 12-15 hours labor.

#9 of 36 Re: 1998 SAAB 9-5 heater problem [eurospecialist] by eurospecialist

Jan 22, 2008 (10:20 am)

Replying to: eurospecialist (Jan 22, 2008 10:14 am)
sorry, my answer was to the question about heat coming out of one set of vents and cold air coming out of the other side of vents..

#10 of 36 Re: 1998 SAAB 9-5 heater problem [joncragg] by Mr_Shiftright HOST

Jan 23, 2008 (5:50 pm)

Replying to: joncragg (Jan 20, 2008 3:19 am)
I'd check for low coolant level. Is your engine temperature gauge suddenly reading lower than normal? If so, your thermostat could be stuck open. If the temp gauge reads fine, and you have plenty of coolant in the system, I'd guess you have a sticking heater valve.
 
If you get lots of heat down to the floor but not much up top, that might be something more connected to hypothesis.

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