Car running hot

10

Asked by Feb 28, 2017 at 09:12 PM about the 2003 Cadillac DeVille DTS Sedan FWD

Question type: Maintenance & Repair

I have a 2003 Cadillac DeVille change the
water pump change the thermostat new
radiator it's still running hot

4 Answers

72,365

If you have a Northstar engine it's most likely going to be the head gaskets. Have the cooling system tested for exhaust gases in the coolant. Sooner or later all Northstars blow head gaskets. If that's the case you're looking at upwards of $3500 to have it fixed correctly! For starters the engine and transmission both have to come out of the bottom of the car. There's no other way to do the job! HTH. -Jim

85,695

Jim, Why exactly do the Northstar engines blow head gaskets?

2 of 2 people found this helpful.
28,785

All I can suggest is before you part with any $$ do everything you can to make sure all the air is out of the cooling system. Park it uphill or jack the front up when bleeding it. Then try Block Tester (you can rent the setup from Advance or Autozone) or a cylinder compression test (you can also borrow that tool from same) to confirm everyone's worst fear.

1 of 1 people found this helpful.
72,365

F O R, the head bolts pull out of the block. This usually happens between 90,000 and 120,000 miles. HTH. -Jim

1 of 1 people found this helpful.

Your Answer

DeVille

Looking for a Used DeVille in your area?

CarGurus has 1,508 nationwide DeVille listings starting at $1,999.

ZIP:

Cadillac DeVille Experts

  • #1
    kikero
    Reputation
    2,250
  • #2
    Js08016
    Reputation
    1,960
  • #3
    Cynthiasmith
    Reputation
    1,740
View All

Related Models For Sale

Used Cadillac CTS
242 Great Deals out of 10,377 listings starting at $2,950
Used Lincoln Town Car
30 Great Deals out of 1,731 listings starting at $1,099
Used Chevrolet Impala
567 Great Deals out of 34,351 listings starting at $900
Used Cadillac Escalade
250 Great Deals out of 11,861 listings starting at $1,200
Used Mercedes-Benz S-Class
148 Great Deals out of 8,119 listings starting at $1,200
Used Lincoln Continental
14 Great Deals out of 3,388 listings starting at $32,794
Used Chevrolet Tahoe
803 Great Deals out of 41,553 listings starting at $1,987

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.