Cooling system issue! Replaced overflow tank, ect sensor (total nightmare!!!), thermostat, every hose, flushed system, etc. All tests good, but still fans won't come on and no coolant in top hose. Aga

Asked by May 22, 2017 at 10:41 PM about the Cadillac DeVille

Question type: Maintenance & Repair

See question

2 Answers

72,395

With the engine cold remove the recovery tank cap and the thermostat. Fill the cooling system at the thermostat hole in the engine. Once full, replace the thermostat and start the engine. Top off the coolant in the recovery tank with the engine running. If it continues to overheat have the coolant tested for combustion gases. If you have a Northstar it's probably a blown head gasket. All Northstar engines blow head gaskets sooner or later. HTH. - Jim

8,015

find the bleeder valve to vent off the air and pour coolant in while running a cold engine. bleed air till coolant spurts out. this is how my valve looks like.

Your Answer

Cadillac DeVille Experts

  • #1
    kikero
    Reputation
    2,250
  • #2
    Js08016
    Reputation
    1,960
  • #3
    Cynthiasmith
    Reputation
    1,750
View All

Related Models For Sale

Used Cadillac DTS
5 Great Deals out of 27 listings starting at $4,995
Used Cadillac CTS
19 Great Deals out of 385 listings starting at $2,500
Used Lincoln Town Car
14 listings starting at $1,850
Used Chevrolet Impala
175 Great Deals out of 1,089 listings starting at $1,500
Used Cadillac Escalade
5 Great Deals out of 479 listings starting at $4,980
Used Cadillac STS
13 listings starting at $4,999
Used Chrysler 300
141 Great Deals out of 906 listings starting at $2,491
Used Mercedes-Benz S-Class
10 Great Deals out of 139 listings starting at $4,999
Used Lincoln Continental
51 listings starting at $52,900
Used Chevrolet Tahoe
3 Great Deals out of 739 listings starting at $3,995
Used Dodge Charger
54 Great Deals out of 737 listings starting at $3,488

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.