At what temperature should the coolant be to not be harmful to my 1998 Cadillac deville

Asked by Nov 22, 2015 at 12:31 PM about the 1998 Cadillac DeVille

Question type: General

2 Answers


Normal operating temperature should be between 160 and 190 degrees depending on what thermostat you have installed. If it is running much hotter than 190 then you need to service your cooling system.

1 of 1 people found this helpful.

Normal operating temperature for your Cadillac is 195°F. The engine must reach that temperature within a predetermined time from cold start up or the check engine/service engine soon light will come on and a trouble code will set. As you drive the temperature may fluctuate between 195°F and about 205°F. In stop and go traffic, in the summer, with the a/c going it may climb to 220°F. This is normal. Anything higher than that means there's something going on with the cooling system that needs to be addressed. HTH. -Jim

Your Answer

Cadillac DeVille Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Lincoln Town Car
19 Great Deals out of 1,434 listings starting at $1,850
Used Cadillac Eldorado
288 listings starting at $2,495
Used Chevrolet Corvette
107 Great Deals out of 15,743 listings starting at $4,500
Used Cadillac Seville
233 listings
Used Cadillac Escalade
256 Great Deals out of 11,859 listings starting at $2,995
Used Mercedes-Benz S-Class
120 Great Deals out of 7,156 listings starting at $1,980
Used Ford Mustang
287 Great Deals out of 38,472 listings starting at $1,995

Used Cars For Sale

2005 Cadillac DeVille For Sale
173 listings starting at $2,499
2003 Cadillac DeVille For Sale
141 listings starting at $2,988

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.