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  1. #1
    John Jardine
    Saab Fan
    Join Date
    10 Dec 2011
    Location
    Lumberton, New Jersey, United States
    Posts
    30
    Saab(s)
    1991 900S convert, 1985 900s 4door,1985 900 Turbo
    Thumbs Up:   0

    Rough rich idle

    Hi all. 91 900s with 2.1. Replaced fuel pump with new. Battery went dead over night. Replace battery. Car starts but runs rich at idle. Once driving ok but see shift up lite blinking. Changed spark plugs. Car has 230000 miles was running fine til fuel pump stopped.

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  2. #2
    John Jardine
    Saab Fan
    Join Date
    10 Dec 2011
    Location
    Lumberton, New Jersey, United States
    Posts
    30
    Saab(s)
    1991 900S convert, 1985 900s 4door,1985 900 Turbo
    Thumbs Up:   0
    Also check engine light on. Did replace fuel pump relay.

    0 Not allowed!

  3. #3
    John Jardine
    Saab Fan
    Join Date
    10 Dec 2011
    Location
    Lumberton, New Jersey, United States
    Posts
    30
    Saab(s)
    1991 900S convert, 1985 900s 4door,1985 900 Turbo
    Thumbs Up:   0
    Found orange wire near fuel pump relay that was disconnected. Caused battery to run down and car run rich from idle. Now runs great again. Any one know what a single orange wire with a white round connector above pump relay area do?

    0 Not allowed!

 

 

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