Question about Cadillac DeVille

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I just purchase a USED 1991 Cadillac Deville Sadan. I noticed that this evening was I was driving on the freeway, my "Check Engine Soon" stayed on longer than usual. A few days ago it would come and and go. What does this mean? Another thing, the air conditoner and heater doesn't work. However, I feel heat coming from the bottom (feet are) when I'm driving, and the back passengers feel heat coming from the small heating vents at the back seats. What the problem here?

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There is no way to know what the problem is if you have no idea on how to test things. Being a used car your going to need a professional to look at this since you have several problems happening. We can guess but still you will not get any input on how to go about fixing this since all we can do is guess, Most likely someone will need to take the dash apart to find why you have heating and AC issues. The lights issue is most likely engine sensor related and a code stored may indicate what direction to go.

Posted on Apr 28, 2010

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