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

75,665

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

96,295

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

2 of 2 people found this helpful.
32,675

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.
75,665

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 1,413 nationwide DeVille listings starting at $1,899.

ZIP:

Cadillac DeVille Experts

  • #1
    kikero
    Reputation
    2,280
  • #2
    Js08016
    Reputation
    2,000
  • #3
    Cynthiasmith
    Reputation
    1,770
View All

Related Models For Sale

Used Cadillac Eldorado
316 listings starting at $1,700
Used Cadillac CTS
224 Great Deals out of 9,458 listings starting at $2,200
Used Cadillac Seville
289 listings starting at $800
Used Lincoln Town Car
25 Great Deals out of 1,601 listings starting at $1,200
Used Chevrolet Impala
507 Great Deals out of 32,207 listings starting at $1,000
Used Cadillac Escalade
277 Great Deals out of 12,235 listings starting at $2,995
Used Lincoln Continental
16 Great Deals out of 2,825 listings starting at $25,900
Used Chevrolet Camaro
372 Great Deals out of 31,403 listings starting at $3,495

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.