Northstar average engine temp ?

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Northstar Engines and System Technical Discussion Discussion, Northstar average engine temp ? in Cadillac Engine Discussion; I have a 1998 Deville, what is the usual engine temp? And what is a safe heat range for the ...
  1. #1
    TexasCadillac Guest

    Smile Northstar average engine temp ?

    I have a 1998 Deville, what is the usual engine temp? And what is a safe heat range for the engine? thanks TexasCadillac

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  3. #2
    Playdrv4me's Avatar
    Playdrv4me is offline Cadillac Owners 10000+ Posts
    Automobile(s): 1992 STS / 2005 MB G500 / 2003 STS / 2006 XLR-V
    Join Date
    Nov 2003
    TPA / STL / ICT / SAT

    Re: Northstar average engine temp ?

    This varies widely but 195-215ish.

  4. #3
    STEVEHO is offline Cadillac Owners Member
    Automobile(s): 1999 Deville
    Join Date
    Jan 2006

    Re: Northstar average engine temp ?

    My 99 Deville almost always runs between 199 and 205 degrees. The hottest I've ever seen it was 209 while sitting,idling, in a Houston traffic jam for over an hour in August.

  5. #4
    johnrgregory is offline Cadillac Owners Fanatic
    Automobile(s): 1999 Cadillac DeVille
    Join Date
    Jan 2006

    Re: Northstar average engine temp ?

    My 99 DeVille is about the same as SteveHo. Rarely needs to kick in the fan.

  6. #5
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: Northstar average engine temp ?

    My '97 ran a consistent 206 (summer) and 213 (winter). Cooling fans don't even come on till 224 or 225.

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