99 N* Issue
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
Northstar Engines and System Technical Discussion Discussion, 99 N* Issue in Cadillac Engine Technical Discussion; I've had my car since Jan. 07. I've put coolant in it one time when i noticed the check coolant ...
  1. #1
    whitediamondsts99 is offline Cadillac Owners Member
    Automobile(s): 1997 Deville(Mint, 46k miles..SOLD) 1999 Cadillac STS(NEW!!)
    Join Date
    Jan 2007
    Location
    Owensboro
    Posts
    26

    99 N* Issue

    I've had my car since Jan. 07. I've put coolant in it one time when i noticed the check coolant level, didn't think nothing of it. That was in April when I did that. When I was detailing my engine bay about a week ago I noticed it was a little low from the full point, maybe an inch down. Should I be concerned about this, I'm aware of the HG problem but the engine doesn't smell of coolant level or leak anything. It has 76k miles and has been documently serviced. I'm almost thinking of just getting rid of it before this should happen. Thanks for the replies!

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    eldorado1 is offline Cadillac Owners Connoisseur
    Join Date
    Feb 2004
    Location
    FL
    Posts
    2,250

    Re: 99 N* Issue

    The system isn't exactly a perfectly sealed system... An inch in 7 months sounds pretty normal to me.. If you're concerned, as a preventative measure you can add the coolant supplement. This will block any minor leaks you might have, that could cause what youre seeing.

  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
    Location
    Woodstock Ill.
    Age
    66
    Posts
    72,955

    Re: 99 N* Issue

    The system isn't exactly a perfectly sealed system.
    It IS a sealed system and should never need topping off unless there is a leak somewhere.

  5. #4
    eldorado1 is offline Cadillac Owners Connoisseur
    Join Date
    Feb 2004
    Location
    FL
    Posts
    2,250

    Re: 99 N* Issue

    Quote Originally Posted by Ranger View Post
    It IS a sealed system and should never need topping off unless there is a leak somewhere.
    All my cars must leak then. I have to top them all up every year... usually it's less than an inch low. I figure it's due to evaporation (the surge tank is open to the atmosphere) or miniscule leaks somewhere... The equivalent of a drop a week isn't worth my effort to find.

  6. #5
    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
    72,955

    Re: 99 N* Issue

    No, the surge tank is NOT open to atmosphere like a recovery tank (which has the cap on the radiator). The surge tank is sealed. If you have to top it off, you do have a leak somewhere albeit a very minor one.

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