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Saab 9-5 Climate Control Questions

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

You are in the Saab 9-5 Forum.

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

Messages Page 4 of 4

#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.

#31 of 36 Re: 04 Saab 95 climate control [mastertater] by gimmestdtranny

Jan 09, 2011 (4:16 pm)

Replying to: mastertater (Sep 28, 2010 3:38 pm)
Well, they never responded to thank you, but i found all your posts very informative. I'm not a Saab owner yet, but it is good to know there are people out there that know them well. And the short you found in the SIA pump thing was pretty impressive.

#32 of 36 mr shiftright by gimmestdtranny

Jan 09, 2011 (4:51 pm)

or anyone, do you know when Saab started to hot galvanize their bodies to resist rust?

#33 of 36 Re: mr shiftright [gimmestdtranny] by Mr_Shiftright HOST

Jan 09, 2011 (9:13 pm)

Replying to: gimmestdtranny (Jan 09, 2011 4:51 pm)
No but most companies started doing this late 70s/early 80s.
 
I don't recall that Saabs were ever particularly susceptible to rust anyway.

#34 of 36 2001 9 5 climate conrol code and fix question by fogelson

May 19, 2011 (5:37 pm)

I get cold air from the left side of the car and heat from the right side and rear seat heat when I should be getting air conditioning from all of the vents.. the code that shows is 1 11. What is wrong and what is the fix for this. Thanks.

#35 of 36 Heat Issues by aherman1115

Jan 06, 2012 (12:41 pm)

My heat is not working properly! When I turn the car on, I have to slam the side or top of my dash to get the heat to turn on but now it has gotten to the point where all I hear is the faintest sound of what sounds like a fan with something stuck in it trying to rotate, trying to turn on but it doesn't! It works VERRRRY faintly when I press the button that has that swirly arrow inside of the car but thats not until I drive at 50 MPH or so and that is not even a guarantee! Today it just kind of completely stopped working no matter how hard or how much I hit the dash. Anyone have any idea what this could be??

#36 of 36 Re: Heat Issues [aherman1115] by gimmestdtranny

Jan 17, 2013 (7:19 am)

Replying to: aherman1115 (Jan 06, 2012 12:41 pm)
A dead mouse stuck in the fan?
 
Remnants of a mouse nest getting stuck in fan? They usually use what is handy and warm insulators. Car interior sound deadening underpadding is the material of choice...the little $%#&*! so and sos..
 
Try parking with recirculate door closed in future but is not a solution in all cars.
 
Rheostat gone bad in the fan switch?

Messages Page 4 of 4

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