Climate Control Won't Control on Auto
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Cadillac Catera and Cimarron Forum Discussion, Climate Control Won't Control on Auto in Past Cadillac Vehicle Discussion; I just joined the Catera family with the purchase of a '98 model with 91K this past week and have ...
  1. #1
    dkinder is offline Cadillac Owners Member
    Join Date
    Jul 2003
    Location
    Blacksburg, VA
    Posts
    56

    Climate Control Won't Control on Auto

    I just joined the Catera family with the purchase of a '98 model with 91K this past week and have a few questions. I have already taken care of the no speedo/odo and the TCS/ABS lights on by replacing the EBTCM with a $50 junkyard part thanks to the forum last night.

    This issue is that the automatic climate control works great if I have it on full blast A/C manually or set on Auto and 60 degrees, but the second I select Auto and 65 or higher it goes down to a setting fan setting so low that it can't maintain the temperature selected in the car. Has anyone else experienced this?

    Tonight after work I hope to tackle that problem as well as locating a coolant leak in the back of the engine and determining what is clunking in the front end.

    Thanks in advance!

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  3. #2
    R-Caddy's Avatar
    R-Caddy is offline Cadillac Owners Enthusiast
    Automobile(s): 2 1997 Cateras: black&ocean green
    Join Date
    Jul 2005
    Location
    Savannah, GA
    Age
    29
    Posts
    698

    Re: Climate Control Won't Control on Auto

    May be a bad A/C head unit ...?

  4. #3
    Lawrence_C is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Feb 2007
    Posts
    70

    Re: Climate Control Won't Control on Auto

    When you are checking for the coolant leak, check for the HCV. Its a common problem.

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