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  1. #1

    Join Date
    30 Jul 2018
    Location
    united states
    Posts
    1
    Saab(s)
    2000 9-5 SE
    Thumbs Up:   0

    Temperature Question

    Hello!
    First time posting and just have a really quick question! I have a 2000 saab 9-5 and in the winter the car will heat up to where it is supposed to be and I will have a good amount of heat. When I start driving the temperature gauge starts to drop and I lose heat and my car will blow cold air and will only heat up again when I stop driving and waiting a few minutes. Since most of my travel to work is interstate driving it is important to me to have heat! I have been researching and from what it looks like I need to replace the thermostat (or at least start with that) but wanted some other opinions just to make sure I am starting in the right place! Also what thermostat and coolant would you all suggest?
    Also I have run the test on the unit (holding auto+0ff) and get error code 1 on the left and 21 on the right which when i looked it up said something about a software flash.

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  2. #2
    Desmond Khoo
    Saab Enthusiast
    Join Date
    24 Mar 2012
    Location
    Malaysia, Kuala Lumpur
    Posts
    152
    Saab(s)
    2006 9-5 2.0t
    Thumbs Up:   1
    i think you got it right that the thermostat is stuck open. They recommend to use original ones only. I've used a cheaper OEM before, but the rubber seal failed and started leaking from there.

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  3. #3
    mdb99@bellsouth.net
    Oh! I Get It Now Mike Brennan's Avatar
    Join Date
    21 Aug 2010
    Location
    Williamsburg, Va. and Cedar RIver Mi.
    Posts
    594
    Saab(s)
    01 95 Aero and Wagon, 09 93 Combi and an 08 95 Combi
    Thumbs Up:   11
    Your Saab uses green coolant

    0 Not allowed!

 

 

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