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  1. #1
    Saab Fan
    Join Date
    01 Dec 2013
    Location
    Las Vegas
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    11
    Saab(s)
    1999 9-3 SE Convertible
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    99 9-3 stumbles

    My 1999 9-3 started to stumble at high rpm, then at different rpm ranges. I pulled the plugs and regapped them. Ran amazing for 1 day now its back. I ordered new ngk plugs and we will see what happens. Any ideas?????

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  2. #2
    Saab Fan
    Join Date
    01 Dec 2013
    Location
    Las Vegas
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    11
    Saab(s)
    1999 9-3 SE Convertible
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    Forgot to say computer reads missfire on cylinder # 3. DIC is fairly new as well. Might reinstall the older one I replaced as I replaced it and found it was not the problem.

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  3. #3
    Mathieu Verberne
    Saab Fan
    Join Date
    10 Apr 2012
    Location
    Kalmthout, Belgium
    Posts
    37
    Saab(s)
    9-5
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    First try the new spark plugs. How many miles did they run?

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  4. #4
    Saab Fan
    Join Date
    01 Dec 2013
    Location
    Las Vegas
    Posts
    11
    Saab(s)
    1999 9-3 SE Convertible
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    About 5,000. However they are not NGK. The new plugs will be NGK.

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  5. #5
    Mathieu Verberne
    Saab Fan
    Join Date
    10 Apr 2012
    Location
    Kalmthout, Belgium
    Posts
    37
    Saab(s)
    9-5
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    Quote Originally Posted by 99yellow9-3 View Post
    About 5,000. However they are not NGK. The new plugs will be NGK.
    Try them a.s.a.p. I had problems with the ignition also, due to old spark plugs. Mine were 10k km (6.250 miles) old. After fitting new bcpr7es-11 spark plugs all was fine.


    Some advice for others:
    If you can't find the bcpr7es-11's buy the bcpr7es standard, and gap the electrode yourself at 1,1 mm

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  6. #6
    Saab Fan
    Join Date
    01 Dec 2013
    Location
    Las Vegas
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    11
    Saab(s)
    1999 9-3 SE Convertible
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    Replaced the plugs.... Still erratic stumbling. Till I replaced the D.I.C. today. I am not totally convinced that's the fix, However I will know tomorrow and will post my findings!!!!!!!!! A big THANK YOU to all that have helped by replying!!!! We can make a difference by helping one another!!!!!!!!!!

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  7. #7
    Saab Fan
    Join Date
    01 Dec 2013
    Location
    Las Vegas
    Posts
    11
    Saab(s)
    1999 9-3 SE Convertible
    Thumbs Up:   0
    Replaced D.,I.C. and now smooth as ever!!!!!! D.I.C. was the culprit all along!!!!!!!! Hope this helps others....

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