location of temp sensor on 1999 Cadillac DeVille

engine fan will not come on only when i turn the heat or ac on. location of temp sensor

by in Branford, CT on September 17, 2009
2 answers
ANSWER by on September 17, 2009
The coolant sensor on the northstar engine in your 1999 Cadillac DeVille is located on the back end of the rear head. Not very easy to get to as I remember. The cooling fans should come on at about 230 degrees.
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ANSWER by on August 02, 2010
the engine is overheating and is throwing water out
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