Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know - Page 24
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View Poll Results: Select one if you have had a problem with the headgasket the Northstar V8:

Voters
741. You may not vote on this poll
  • 1993

    18 2.43%
  • 1994

    38 5.13%
  • 1995

    13 1.75%
  • 1996

    39 5.26%
  • 1997

    148 19.97%
  • 1998

    165 22.27%
  • 1999

    167 22.54%
  • 2000

    76 10.26%
  • 2001

    52 7.02%
  • 2002

    38 5.13%
  • 2003

    14 1.89%
  • 2004

    0 0%
  • 2005

    3 0.40%
Multiple Choice Poll.
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Northstar Engines and System Technical Discussion Discussion, Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know in Cadillac Engine Technical Discussion; 2001 DTS Failure started at just under 200,000km with the engine heating up just a bit only on hills. Flushed ...
  1. #346
    rdf123 is offline Cadillac Owners Member
    Automobile(s): 2001 DTS 220000 KM
    Join Date
    Jun 2007
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    re: Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know

    2001 DTS

    Failure started at just under 200,000km with the engine heating up just a bit only on hills. Flushed the rad at 212k...big mistake. The overheating quickly got progressively worse. Took it off the road for repair at 215000km. at 220k now with no problems. I am looking forward to 200k more (fingers crossed)!

  2. #347
    studebaker is offline Cadillac Owners Member
    Automobile(s): looking for an ETC
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    re: Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know

    I just graphed the data and ended up with a (mostly) big bell curve.

    Studebaker

  3. #348
    MaduraMi is offline Cadillac Owners Member
    Automobile(s): '99 Deville
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    re: Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know

    I bought a '99 Deville in August. Car ran great at low speed and was cosmetically in great shape. It was dirt cheap so I suspected that there was something wrong. It didn't take long for me to find out what it was. Thing overheated on the freeway on the way home. I didn't know about the head bolt problem so I was doing the exact opposite of what I should have on the way home, that is to say that I kept trying to go fast thinking I needed to get more air flowing through the radiator. I swapped out the thermostat(came out in two pieces) and the radiator cap. Didn't work. After much research I learned of the headgasket problem. I couldn't really smell much of the combustion gasses in the coolant, and didn't smell coolant or see any white smoke in the exhaust. I considered some of the "snake-oil" fixes but ended up doing Northstar Performance Stud kit repair. It was a job. Pulling the motor and dropping it back in through the top can be done but it isn't fun. I am pleased to say that after 1000 miles and some lengthy highway runs it is fixed. If anyone has any questions about the repair feel free to message me.

    Paul

  4. #349
    ooomwizard is offline Cadillac Owners Member
    Automobile(s): ElDorado 98 ETC
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    May 2009
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    ATL
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    re: Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know

    Bought a beautiful used '98 ElDorado in 2004 w/98,000 miles to replace one that I lost in a crash. After a few months it needed the HG repair. I used the $450 timesert kit (and it came with enough (10) inserts for one side, so I had to order more, grrr) and 2 sporatic weeks of labor. That repair lasted 70,000 miles.

    Today I just finished the SECOND headbolt repair. Indeed, 4 of the 20 Timeserts had pulled out. This time I used Norms' NSL3000 inserts kit and not only was it cheaper at $320, the inserts are TWICE as big as the Timeserts. Also found a 1/2 dead ignition coil pack. Runs smooth smooth now and I'm confident the engine will now outlast the body. The cylinders still had a good crosshatch on the walls which made me happy. And, since I had the engine apart I went ahead and replaced the valve guide seals. That was a pain!

    Go with Norms. The engine would have to explode to pull those inserts out, and maybe not even then. Wish I had used Norms first.

    Oh yeah, I dropped the cradle. It's the only way to go! Used a 4 x 6 landscape timber to support the body on two jacks. Dropped the engine onto 2 - 4/wheel car dollys using 3 jacks. The dollys are great for moving the engine around.

    GL!

  5. #350
    Pete1996 is offline Cadillac Owners Fanatic
    Automobile(s): 1996 STS
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    Re: Definitive Northstar Headgasket Thread

    Quote Originally Posted by Pete1996 View Post
    1996 STS Began coolant consumption at about 120K miles, HG failure at 162K miles
    Can't seem to sell our car at any price, going to pull a few parts off for friends, then junk it soon!

  6. #351
    N0DIH's Avatar
    N0DIH is offline Cadillac Owners Master
    Automobile(s): 94 Fleetwood Brougham
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    Re: Definitive Northstar Headgasket Thread

    What do you have? I have a friend with a 99 SLS that got rear ended. He is pondering finding a car with a bad engine or damaged front end and swap to make a usable car.

    Where are you located?

    Quote Originally Posted by Pete1996 View Post
    Can't seem to sell our car at any price, going to pull a few parts off for friends, then junk it soon!

  7. #352
    Pete1996 is offline Cadillac Owners Fanatic
    Automobile(s): 1996 STS
    Join Date
    Aug 2009
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    Re: Definitive Northstar Headgasket Thread

    We have a 1996 STS, and are located in Trumbull, CT 06611.
    Here it is on Craigslist: http://newhaven.craigslist.org/cto/2201668747.html
    I don't know if you could swap everything from a 1999 - I'd guess
    that you'd need the PCM etc. and I'm sure others here know better.

    I wonder if the entire cradles would swap?

    You probably have noticed this thread:
    http://www.cadillacforums.com/forums...fferences.html

  8. #353
    Pete1996 is offline Cadillac Owners Fanatic
    Automobile(s): 1996 STS
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    Re: Definitive Northstar Headgasket Thread

    Going to the junk yard Friday or Monday latest - hate to do it but it has to go.

  9. #354
    Pete1996 is offline Cadillac Owners Fanatic
    Automobile(s): 1996 STS
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    Re: Definitive Northstar Headgasket Thread

    I just noticed that two of our relatives have SLS's and I'll report here when/if they fail!

  10. #355
    Destroyer's Avatar
    Destroyer is offline Cadillac Owners Master
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    Re: Definitive Northstar Headgasket Thread

    I'd buy it for that price but I'm a bit far away in FL. You should part it out first. You will make much more and you will be helping out people that need parts to keep theirs running.

  11. #356
    Pete1996 is offline Cadillac Owners Fanatic
    Automobile(s): 1996 STS
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    Re: Definitive Northstar Headgasket Thread

    Is there a free part of this forum for parting a car out or selling parts? I didn't notice one - the car is sold anyway but I would have liked to have known where to put it.

  12. #357
    00 Deville's Avatar
    00 Deville is offline Cadillac Owners Connoisseur
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    Re: Definitive Northstar Headgasket Thread

    The Headgasket man came to visit me... 2000 Deville overheated for the first time today at 88,888 miles. Confirmed diagnosis with Block Test Kit 2 hours later... Blue fluid immediately turned yellow. Full story at link below...

    http://www.cadillacforums.com/forums...0-deville.html

  13. #358
    ThumperPup's Avatar
    ThumperPup is offline Cadillac Owners Master
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    re: Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know

    i think in the past year i have read more things about 2000 N's going bad i think when mine went in April the first time there was like 42 failed in the 2000 model year and now we are 10 months latter and totale of 2000's are up to 50 hmm make one think

  14. #359
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
    Automobile(s): Crimson 2001 Seville STS, 1990 Seville (RIP)
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    re: Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know

    '97 Seville SLS. 67,000 mi. Lifted right head. This was in late winter '09

  15. #360
    iametarq's Avatar
    iametarq is offline Cadillac Owners Connoisseur
    Automobile(s): (his) '98 SLS - 195K 09/2011 - (hers) 2012 Ford Escape
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    re: Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know

    98 Deville ~163000 miles at failure.

    My 98 SLS is still good with no issues at 188,000 miles.

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