94 concours
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Northstar Engines and System Technical Discussion Discussion, 94 concours in Cadillac Engine Technical Discussion; when cold engine runs great. as it warms up i have a miss at idle. new parts include plugs, wires, ...
  1. #1
    belo1959 is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Nov 2007
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    4

    94 concours

    when cold engine runs great. as it warms up i have a miss at idle. new parts include plugs, wires, coil packs, tb cleaning. i had the car checked at the dealer. they checked the injectors and said they were ok. car runs like new as soon as you step on the gas and get off idle. any help.

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Jun 2004
    Location
    Woodstock Ill.
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    Re: 94 concours

    Pull & clean the EGR valve.

  4. #3
    belo1959 is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Nov 2007
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    Re: 94 concours

    i removed and cleaned egr valve, i noticed a rattle noise when i shook the valve. is this normal? should i replace the valve?

  5. #4
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    73,353

    Re: 94 concours

    I think that might be the pintle valve (normal). Can't swear to it though as I don't remember ever shacking it.

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