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  1. #1

    Join Date
    10 Aug 2019
    Location
    Michigan, US
    Posts
    3
    Saab(s)
    2003 9-5 arc v6, 2004 9-5 arc, 2004 9-5 arc wagon
    Thumbs Up:   0

    2004 9-5 low boost

    Turbo gauge wonít go into yellow, now itís starting to stutter and almost die out. Oil light comes on when it almost dies. Started with the P1105 code, now getting random miss fire codes. Turbo makes a hissing sound. Tried changing MAF sensor, pressure sensor on inlet air tube, valve on inlet air tube and multiple vacuum lines. Waste gate is moving fine. Also tried disconnecting the cat, didnít seem to change just ran rough, probably due to o2 sensors. Reading other posts saying plugged cat, just want to be sure before spending the money on a new cat. So any other suggestions? Thanks

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  2. #2

    Join Date
    10 Aug 2019
    Location
    Michigan, US
    Posts
    3
    Saab(s)
    2003 9-5 arc v6, 2004 9-5 arc, 2004 9-5 arc wagon
    Thumbs Up:   0
    Well I found where the hiss was coming from. Blown inlet gasket, hoping that is the reason for low boost.

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  3. #3
    Saab Fan
    Join Date
    13 Nov 2018
    Location
    Connecticut
    Posts
    45
    Saab(s)
    2002 9-5 arc
    Thumbs Up:   1
    Would you happen to have any pics I seem to have the same low boost as you also today for some reason I hit about 110 on the highway and I got this VIOLIENT vibration I stopped accelerating and it stopped got off the highway jumped back on and trans just slipped completely had to pull over and restart to make it home

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  4. #4

    Join Date
    10 Aug 2019
    Location
    Michigan, US
    Posts
    3
    Saab(s)
    2003 9-5 arc v6, 2004 9-5 arc, 2004 9-5 arc wagon
    Thumbs Up:   0
    I have the 2.3 liter and the turbo inlet is on the bottom of the exhaust manifold. This is right in front of the motor as you look down.

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