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  1. #1
    Saab Fan
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    2000 Saab 95 SE, 2003 Saab Aero
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    Dash loud intermittent knocking noise

    My next project is to find the loud intermittent knocking noise coming from dash when heat or a/c is on. It's very annoying and time to cure it. Any ideas? This is on my 2003 9-5 Aero...

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  2. #2
    Ivan
    Saab Enthusiast
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    2003 9-5 Aero Sedan (R.I.P.), 2006 9-5 2.3T Sport, 2008 9-3 Aero SC
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    I also have an annoying noise shen the ACC runs. I wouldn't call it a knock, though. For me, it's more like a whine. Gets worse when I accelerate. It's not all that loud, but sometimes it drives me mental. I asked a question about it a while back, but I guess no one else has experienced anything like it.

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  3. #3
    Saab Fan
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    2000 Saab 95 SE, 2003 Saab Aero
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    Quote Originally Posted by ile2010 View Post
    I also have an annoying noise shen the ACC runs. I wouldn't call it a knock, though. For me, it's more like a whine. Gets worse when I accelerate. It's not all that loud, but sometimes it drives me mental. I asked a question about it a while back, but I guess no one else has experienced anything like it.

    I've seen lots of posts about your issue. Yours sounds like the recirc motor. But mine is a loud tapping or knocking, 7 or 8 times, then stops for awhile. Does it on start-up and when run a/c check as well as other random times.

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  4. #4
    Renato Piereck
    Spreading the Saab virus rpiereck's Avatar
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    24 Jul 2011
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    Ansbach, Germany
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    Saab(s)
    '00 9-5 Aero SC, 87 900i 8v
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    SAABs are built like Legos and in many ways (but not always) the 9-5 is just a larger version of the 9-3. Could this problem be similar to this one on the 9-3? http://saabworld.net/f8/automatic-cl...problem-26991/

    Good luck.

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    Now: '00 Saab 9-5 Aero Combi - '89 Peugeot 205 CTI - '91 Peugeot 309 GTI
    Gone: '87 Saab 900i - '95 Saab 900 SE Turbo

 

 

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