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  1. #1
    Greg McKenzie
    Saab Fan
    Join Date
    01 Jul 2013
    Location
    Victoria Point, Queensland, 4165, Australia
    Posts
    7
    Saab(s)
    1986 Saab 900i, 3 door
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    Pulley noise

    Recently I fitted a new timming chain to my 1986 900i auto, and from the area of the multi grooved from pulley there was a squelling noise. I removed the belts, but noise remained. Then removed the pulley and very quickly tried the motor once more, and no noise. put the pulley back, noise returned. Pulley removed, no noise.
    I am puzzled and any thoughts as to the reason would be appreciated.

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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
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    Sounds like harmonic balancer pulley might be bad. You don't want it to fail real damage will happen. They are a pain to get off. Had same problem on our 198 900s 8 valve. Had to cut down a socket to fit.

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  3. #3
    Greg McKenzie
    Saab Fan
    Join Date
    01 Jul 2013
    Location
    Victoria Point, Queensland, 4165, Australia
    Posts
    7
    Saab(s)
    1986 Saab 900i, 3 door
    Thumbs Up:   0
    I placed the pulley in the vice and dropped a couple of bolts in the holes. Then got a bar and tried to get some movement, there was none. I presumed the set up was OK

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  4. #4
    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
    Check power steering pump fuid level, water pump and altenator bushings. They can cause squelling. Double belt must be same size and age.

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  5. #5
    Sam Carlson
    Tutorial Bot euromobile900's Avatar
    Join Date
    14 Aug 2010
    Location
    Medford, MA
    Posts
    683
    Saab(s)
    '90 900 LPT with a flat-nose conversion
    Thumbs Up:   2
    But he says that the noise remains even with no belts! So it could not be any peripheral belt-driven components. I doubt it has anything to do with the pulley.

    Are your cam sprockets properly attached to the camshafts (keyed)? How is the chain tensioner?

    I strongly advise against ever running the engine with the crank pulley removed. The chain tension is my best guess for a suspect.

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    Ask me a question about your c900! I promise I either can answer it or know someone who can

 

 

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