engine fan will not come on only when i turn the heat or ac on. location of temp sensor
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1999 Cadillac DeVille Question: location of temp sensor
Answer #1Oakman September 17, 2009, 16:15Master
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.
Answer #2Visitor, August 02, 2010, 16:58
the engine is overheating and is throwing water out