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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 3 of 4

#21 of 36 Re: 1998 SAAB 9-5 heater problem [jonnyboy001] by Mr_Shiftright HOST

Jan 25, 2010 (9:35 am)

Replying to: jonnyboy001 (Jan 24, 2010 11:09 pm)
There are quite a few Technical Service Bulletins on this problem related to the air mixing damper shaft within the heating/AC system. The dealer should be able to readily call up all the instructions he needs to fix the problem. Looks like some little plasticky parts are involved and maybe an hour labor---at least just from looking at the instructions. So maybe couple hundred bucks?
 
Reference
 
Bulletin No.: 854-2577
 
Date: December 2006, 2000
 
Bulletin Number: 854-2578
 
Date: April 2006
 
Bulletin Number: 854-2411 utg. 2
 
Date: April 2006
 
Notes
 
Bulletin No.: 854-2461
 
Date: March 2004
 
Bulletin Nbr: 871-2322
 
Date: March 2002

#22 of 36 Re: climate control ocasionaly blows fuses on start up [manny78] by mastertater

Mar 15, 2010 (11:28 pm)

Replying to: manny78 (Feb 12, 2009 11:33 am)
Maybe a little late for you, but at least for someone else. I have the for-sure solution to the interior fan not working and the #22 40 amp fuse blowing all the time. This fuse is on the same circuit as the SAI (Secondary Air Induction) device. The SAI works with the Ox sensor at start up for only the first couple of minutes. I just figured this out. I removed this device (next to the battery - round, black, pump looking device that has two pipes and one electrical connector). Took the metal half off (don't mess with the plastic side). Looked inside at the motor. Wow, look at that, one of the wires (red) is touching one of the brush holders and is shorting it out through the insulation. Solution: cut this the slightest bit shorter and crimp another connector on there, boom done. You can also just disconnect this device all together if you like as it only effects the emissions in the first five minutes or so. This will probably help most people with a heater fan not working at all. Now to figure out why there's no hot air. Uuugh.

#23 of 36 9-5 Climate Control issue by dingo1170

Mar 18, 2010 (10:22 pm)

The fault came up with 1-08 left blend door problem which I have read here can be fixed with 2 parts. But nowhere have I read that its the rear where the hot air comes out in my car so I hope this fixes this issue ? At the moment I run the A/C on lo and get cold air everywhere including the rear of the console. Anyway I have ordered the sleeve and shaft and hope this will fix this issue any ideas or have I screwed up ?

#24 of 36 my fix... by csquared49

Mar 26, 2010 (11:28 am)

I replaced the 40 AMP (which blew everytime I started the car and needed replaced) with a 40AMP circuit breaker. Its kinda bulky, but it fit easily in the fuse compartment. It would try to blow, but would reset. I had NO heat and after this fix.. I never had to mess with it again and I had heat all winter. Hope it works for you!!!

#25 of 36 Re: Air not blowing! [tron77] by shiragpatel

Apr 13, 2010 (7:35 am)

Replying to: tron77 (Mar 14, 2009 3:57 pm)
Hey,
I have the same issue and the error code that came up in mine was 1_19 ...did u ever end up finding a solution to this ? the air that comes through when driving I believe is RAM air ...

#26 of 36 Re: Air not blowing! [shiragpatel] by mastertater

Apr 15, 2010 (1:08 am)

Replying to: shiragpatel (Apr 13, 2010 7:35 am)
Not sure if you read this. Here is the for-sure solution to the interior fan not working and the #22 40 amp fuse blowing all the time. This fuse is on the same circuit as the SAI (Secondary Air Induction) device. The SAI works with the Ox sensor at start up for only the first couple of minutes.
 
I removed this device (in front of the battery - round, black, pump looking device that has two air pipes and one electrical connector). Took the metal half off (don't mess with the plastic side). Looked inside at the motor. Wow, look at that, one of the wires (red) is touching one of the brush holders and is shorting it out through the insulation.
 
 Solution: cut the red wire the slightest bit shorter and crimp another connector on there, boom done. No more short. You can also just disconnect this device all together if you like as it only effects the emissions in the first five minutes or so. This will probably help most people with a heater fan not working at all.
 
Double check that your #22 40 amp fuse is blown. If you just replace it, it will just blow again. You either have to fix it or replace the SAI unit. The SAI unit's motor will probably be pretty well melted from the short and may have to be replaced to pass smog.
 
This should fix your problem and has nothing to do with and will not show up on the ACC codes!

#27 of 36 04 Saab 95 climate control by nedb7

Sep 26, 2010 (10:45 am)

Coincidentally after having a leaking heat transfer valve (I think that's what it is called) my heat now only works about 15% of the time. The air conditioner works fine. I checked the code and it comes up as a "0", so I don't think it's the blend doors.
Any suggestions?

#28 of 36 Re: 04 Saab 95 climate control [nedb7] by mastertater

Sep 27, 2010 (11:35 pm)

Replying to: nedb7 (Sep 26, 2010 10:45 am)
Ok, here is a link that describes the cheapest and easiest repair for a broken "blend door" shaft. This is very common.
 
http://www.econmancer.com/?p=98
 
If this is not your problem, here is a basic procedure for diagnosing interior heater problems:
 
first check to see if you have enough coolant in your engine. Next, run your engine till full operating temperature. Now check the heater hoses that go through the firewall to the heat exchanger buried in your dashboard. They should both be quite warm almost hot. If one is cold, you have one of two problems: One, the heater hose system needs to be bled and is currently stuck with a vapor lock. Two, the valve or pump that sends hot coolant to the heater core is not engaged and is suspect
 
If both hoses are hot and you have no heat it has to be the flap (blend door) that allows cold air to pass over the heat exchanger. Different things can cause this, fuse blown, lever arm broken (detached), electronic thermostat control malfunction.
 
In the case of the Saab, if you pull the blend door motor off and move the blend door arm by hand you will get heat and you can start to diagnose the exact issue from there (ie, check motor, shaft etc.)
 
Hope this helps.

#29 of 36 Re: 04 Saab 95 climate control [mastertater] by nedb7

Sep 28, 2010 (3:06 pm)

Replying to: mastertater (Sep 27, 2010 11:35 pm)
Thanks... I tend to think it may be the vapor lock issue. Ever since they changed the heat transfer valve, it hasn't worked. Somebody else mentioned possible vapor lock, but gave me no clue how to check. I'll check the hoses tonight.

#30 of 36 Re: 04 Saab 95 climate control [nedb7] by mastertater

Sep 28, 2010 (3:38 pm)

Replying to: nedb7 (Sep 28, 2010 3:06 pm)
Ok, vapor lock. Look for the two hoses going into the heater core through the firewall. Look for the higher one if one is higher. Look for any bleed valve or screw near the highest point. Also look for a hole in the hose itself. It might be under the hose clamp. Take off the higher hose and run the engine with full coolant. If coolant flows out of the heater and not out of the hose, you have the right hose. Otherwise switch hoses. As the car runs it should fill up the heater core and push out air. Put the loose hose back on its fitting half way at an angle to continue to let air out while letting coolant flows back to the engine. Keep doing this until coolant flows out of the hose at an angle, and put the hose back on an tighten the hose clamp. If you do not have any coolant flowing at all, you have a valve problem. It may take 5 - 10 minutes for coolant to flow out the right hose at idle. Hope this helps.

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