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Thread: groan/rattling noise

  1. #1
    silver duke is offline Cadillac Owners Member
    Automobile(s): 93 cadillac sts seville
    Join Date
    Oct 2005
    Location
    vancouver bc
    Posts
    44

    groan/rattling noise

    hi guys my 93 sts 115k miles makes a strange rattling groan but mainly a vibration in drive and at idle. i suspect the serpentine belt tensioner or the water pump tensioner. the strange thing is i can feel the vibration in the car eg dash left floor board? would an engine noise eg the tensioner roughness transfer to the psgr compartment? is this possibly just some thing rubbing it feels /sounds like a heat sheild rubbing but where . thanks in advance guys


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  3. #2
    zonie77 is offline Cadillac Owners Connoisseur
    Automobile(s): 94 ETC,97 STS
    Join Date
    Sep 2003
    Location
    Arizona
    Posts
    3,531

    Re: groan/rattling noise

    Possibly the catalytic convertor is broken. Caddy's don't have a lot of problems with that but it is a possibility from some of your description.

  4. #3
    silver duke is offline Cadillac Owners Member
    Automobile(s): 93 cadillac sts seville
    Join Date
    Oct 2005
    Location
    vancouver bc
    Posts
    44

    Re: groan/rattling noise

    guys it wAS THE ac lines vibrating figured out after i replaced the belt tensioner which was not the problem . oh well you live and learn!


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