91 Caddy DeVille Sedan Belt
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HT4100 4.1, 4.5, 4.9 Discussion, 91 Caddy DeVille Sedan Belt in Cadillac Engine Technical Discussion; the compressor in my caddy is shot...i called around some part stores and they want around $400 for a new ...
  1. #1
    Grave is offline Cadillac Owners Member
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    91 Caddy DeVille Sedan Belt

    the compressor in my caddy is shot...i called around some part stores and they want around $400 for a new one...i was told i can bypass the compressor by usng a smaller belt...has anyone else here done that and if so what size belt would i need?..any help at all would be greatly appreciated...thanks
    EDIT: Guess it would help to include that it's a 4.9 liter fwd...

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  3. #2
    behind-bars is offline Cadillac Owners Connoisseur
    Automobile(s): 93 Sedan Deville 4.9L
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    Re: 91 Caddy DeVille Sedan Belt

    http://www.cadillacforums.com/forums...lt-bypass.html


    That is for a 94 deville, but since its a 4.9 I imagine it would be the same on your 91.

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    Grave is offline Cadillac Owners Member
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    Re: 91 Caddy DeVille Sedan Belt

    Quote Originally Posted by behind-bars View Post
    http://www.cadillacforums.com/forums...lt-bypass.html


    That is for a 94 deville, but since its a 4.9 I imagine it would be the same on your 91.
    thanks a million!!!

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    Grave is offline Cadillac Owners Member
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    Re: 91 Caddy DeVille Sedan Belt

    after bypassing the compressor with a shorter belt all my digital stuff went out except for the radio

  6. #5
    behind-bars is offline Cadillac Owners Connoisseur
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    Re: 91 Caddy DeVille Sedan Belt

    Quote Originally Posted by Grave View Post
    after bypassing the compressor with a shorter belt all my digital stuff went out except for the radio
    Sure you bypassed the compressor? if yes does the belt spin freely without jumping around?

    Maybe its not turning the alternator fast enough or something. I'm not 100% sure what would cause your problems.

  7. #6
    CadiJeff's Avatar
    CadiJeff is offline Cadillac Owners Connoisseur
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    Re: 91 Caddy DeVille Sedan Belt

    I did it on my old 88 seville for the same reason, never had a problem with it.

  8. #7
    Grave is offline Cadillac Owners Member
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    Re: 91 Caddy DeVille Sedan Belt

    now the bolts in my water pump pulley came loose...could this all factor from the belt not properly fitting?.

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