What do I do about my Cadillac DeVille over heating? I just changed the thermostat.

Asked by Jeff_Townsan Jun 24, 2016 at 07:16 AM about the 2000 Cadillac DeVille

Question type: Maintenance & Repair

Whenever I drive I get a good 15-20 mins
before my car starts over heating when it
does it displays "Engine Overheating" then
"Stop Engine" what's wrong I need help!  

-please anyone. Thanks

4 Answers

223,905

Make sure the cooling system is purged from air pockets, & that the fan is working.

145

have a pressure test done, could be a blown head gasket if it over heats that quick

223,905

Yes, so did it hold pressure? On a head gasket you would have white smoke coming out the exhaust when running, or oil getting into the cooling system or vise versa, coolant getting into the oil pan. What you could do would be a compression test on all the cylinders. One or more cylinders with low compression would help determine a bad head gasket, along with the pressure test on the cooling system.

I had a similar over heating issue on a 2002 Deville DTS. I finally realized that the problem was the belt for the water pump wasn't turning the pump fast enough. The tensioner pully had a bad bearing. I wasn't able to determine the problem until the bearing completely seized up. the friction melted the plastic around the bearing then popped the belt. After replacing the pully and belt it completely stopped overheating.

Your Answer:

DeVille

Looking for a Used DeVille in your area?

CarGurus has 7 nationwide DeVille listings and the tools to find you a great deal.

Postal Code:

CarGurus Experts

  • #1
    James Sparrow
    Reputation
    4,090
  • #2
    tuff4x4
    Reputation
    3,110
  • #3
    Cynthiasmith
    Reputation
    2,840
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Cadillac Escalade
21 Great Deals out of 376 listings starting at $6,900
Used Lincoln Town Car
7 listings starting at $9,995
Used Chevrolet Impala
9 Great Deals out of 107 listings starting at $4,632
Used Mercedes-Benz S-Class
15 Great Deals out of 227 listings starting at $8,977
Used Ford F-150
321 Great Deals out of 14,968 listings starting at $1,712
Used Chevrolet Silverado 1500
202 Great Deals out of 5,975 listings starting at $2,975
Used Chevrolet Monte Carlo
7 listings starting at $3,000

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. Content will be removed if CarGurus becomes aware that it violates our policies.