1998 Deville runs hot after I reset codes

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  • 4 Post By bmoorecad
  • 2 Post By Submariner409
Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, 1998 Deville runs hot after I reset codes in Past Cadillac Vehicle Discussion; after reset my codes in my 1998 Cadillac Deville my car seems to run a lot hotter than usual before ...
  1. #1
    bmoorecad's Avatar
    bmoorecad is offline Cadillac Owners Member
    Automobile(s): 1998 CADILLAC DEVILLE D'ELEGANCE
    Join Date
    Jan 2013

    Thumbs up 1998 Deville runs hot after I reset codes

    after reset my codes in my 1998 Cadillac Deville my car seems to run a lot hotter than usual before to reset my codes and with the AC on my car was at 196 now with the AC on it runs at 215, I turn off the AC and with stop and go traffic I am at 223 should I be worried
    This website has been a fantastic resource in the last six months I have been able to do self repairs on my vehicle so I thank everybody that has join andb moore cad.jpg given their resources and knowledge thank you

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, install big wheels !
    Automobile(s): 2002.5 F55 STS, 2014 Explorer XLT 4WD
    Join Date
    Feb 2006
    MD Eastern Shore

    Re: 1998 deville runs hot after i reset codes

    Resetting/clearing DTC's from the car's system has nothing to do with the engine coolant temperature.

    No A/C, stop&go traffic - 223 is perfectly normal - under those conditions (no A/C function set) fans don't even go to SLOW until 224 - then the engine cools to 213 and the cycle starts over.

    Dirty radiator/A/C condenser fins ?? .......... and 223 is not "hot". Warm, yes. Not hot - as far as the engine is concerned.

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: 1998 Deville runs hot after I reset codes

    Have you checked the purge line?

    Are you using any coolant?

    Your temps are just to the point were you want to keep an eye on it. If they start to climb, then it might be time to worry.

  5. #4
    SUPER LAC DEVILLE is offline Cadillac Owners Enthusiast
    Automobile(s): 1998 Cadillac Deville
    Join Date
    Aug 2012
    Tampa Florida

    Re: 1998 Deville runs hot after I reset codes

    Nice Lac!!!

    And like Sub said... that's what its suppose to do

    occasionally mine will get to 230/233 and drop back down to 215 after the fans kick on high

    normal operations

  6. #5
    bigm57ict's Avatar
    bigm57ict is offline Cadillac Owners Connoisseur
    Automobile(s): 1995 Sedan DeVille, 1979 Coupe deVille
    Join Date
    Aug 2011
    Wichita Kansas

    Re: 1998 Deville runs hot after I reset codes

    Beautiful car!

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