Question about 1999 Cadillac DeVille

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My 1999 cadillac deville check engine light keeps coming on. We got the code that said it had to do with the fuel system so we changed the gas cap 1st soon after the light came back on so we checked code again it said the same thing so we changed the fuel pump about a month ago and today the light came back on. The car doesnt run rough or accelerate rough when the light is on but I have noticed that sometimes when I start it i have to turn the key more than once and when its started and in gear but standing still i feel a little hesitation but once I start driving it drives perfect. I'm thinking some sort of vacum leak? Any suggestions would be appreciated!

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  • hthrmlzz Mar 12, 2011

    I will take it to advanced discount tomorrow and put the exact code number on here when I get home, I can't find the paper I wrote it on unfortunately

  • hthrmlzz Mar 12, 2011

    The code that comes up is P0174 system too lean

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  • Master
  • 367 Answers

Exactly what code are you getting?

Posted on Mar 12, 2011

  • hthrmlzz Mar 12, 2011

    P0174 system too lean

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