over heating
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 5 of 5
Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, over heating in Past Cadillac Vehicle Discussion; New here so I hope I am in the right area. I just purchased a 98 deville and after 45 ...
  1. #1
    zx600 is offline Cadillac Owners Member
    Automobile(s): deville
    Join Date
    Sep 2013
    Age
    40
    Posts
    1

    over heating

    New here so I hope I am in the right area. I just purchased a 98 deville and after 45 min. of idle it will overheat. the radiator is still cool but the hoses going to it are hot as can be. I am a heavy equipment mechanic and know most things but this cooling system is a bit odd with the way all the hoses are routed. Just want to confirm that the radiator is more than likely plugged up. Did a compression test on this motor and got 130 on 5,7,6,8 and 110 to 115 on 1,2,3,4 so I wouldnt think a head gasket is blown. On a diesel engine they only want 10% drop between cyl. any help would be great... thanks

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    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
    74,041

    Re: over heating

    You where in the wrong area. The lounge is for general B.S. discussions. Moved you to the correct forum.

    A HG is a distinct possibility, but before you condemn it, check the purge line. If it is clogged, it will overheat. If the purge line is clear and flows coolant, then do a block test.

  4. #3
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
    Join Date
    Feb 2003
    Location
    california
    Age
    67
    Posts
    5,903

    Re: over heating

    The purge line goes from the holding tank to the water pump. Remove the hose and make sure the nipples the hose goes on are not restricted and the hose is un restricted.

  5. #4
    basscatt's Avatar
    basscatt is online now Cadillac Owners 10000+ Posts
    Automobile(s): 89 Coupe DeVille, 95 Sedan DeVille, 03 SLS, two 02 DHS's
    Join Date
    Feb 2004
    Location
    Minnesota
    Age
    63
    Posts
    10,143

    Re: over heating

    Quote Originally Posted by zx600 View Post
    New here so I hope I am in the right area. I just purchased a 98 deville and after 45 min. of idle it will overheat. the radiator is still cool but the hoses going to it are hot as can be. I am a heavy equipment mechanic and know most things but this cooling system is a bit odd with the way all the hoses are routed. Just want to confirm that the radiator is more than likely plugged up. Did a compression test on this motor and got 130 on 5,7,6,8 and 110 to 115 on 1,2,3,4 so I wouldnt think a head gasket is blown. On a diesel engine they only want 10% drop between cyl. any help would be great... thanks
    -------------------------------
    I just purchased a 98 deville and after 45 min. of idle it will overheat
    why would you sit at idle for 45 minutes?

    did the electric fans come on -

    how hot do you consider overheating -

    what is the temp while driving -

    -------------------

    like carnut already suggested - check the PURGE LINE -
    there should be a constant gentle flow from the engine to the SERGE TANK -
    this is the ONLY way to eliminate air from the cooling system -

  6. #5
    stoveguyy is offline Cadillac Owners Connoisseur
    Automobile(s): 03 STS
    Join Date
    Aug 2007
    Location
    mpls mn
    Posts
    2,494
    Does car boil over? Spew coolant?

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting