1994 DeVille Concourse
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Northstar Engines and System Technical Discussion Discussion, 1994 DeVille Concourse in Cadillac Engine Technical Discussion; Appreciate your help: I have a 1994 DeVille Concourse w/a blown head gasket? It overheats in about 15 minutes, coolant ...
  1. #1
    cadijunkie is offline Cadillac Owners Member
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    1994 DeVille Concourse

    Appreciate your help: I have a 1994 DeVille Concourse w/a blown head gasket? It overheats in about 15 minutes, coolant reservoir smells like exhaust when I open the cap. I have a good running donor car 1996 deville, hit in rear. Was told I can't use the 1996 Northstar in a 1994? Comments?

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    Florian's Avatar
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    Re: 1994 DeVille Concourse

    Im not the mod for this forum, Junk, but all technical car specific Qs need to be put into the proper forum so that all can benefit from the replies. This post should go into the Deville forum.


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    Playdrv4me's Avatar
    Playdrv4me is offline Cadillac Owners 10000+ Posts
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    Re: 1994 DeVille Concourse

    I'll go ahead and move this to the appropriate forum for you. And

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    Ranger's Avatar
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    Re: 1994 DeVille Concourse

    I don't think you can use it. '94 is OBDI and '96 is OBDII. You can swap a '93 or '94. '95 would work I believe if you swap manifolds.

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    Zorb750 is offline Cadillac Owners Connoisseur
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    Re: 1994 DeVille Concourse

    No. OBDx is irrelevant. 1995-1999 will swap, other than the throttle body on the 95, which adds a throttle closed position switch. 1993, 1994 have a different EGR setup and will not work. The 94's engine has EGR passages machined into the head ports, the 1995+ does not. The 1994 has a whole EGR manifold plate thing, the newer engine does not.

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