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Check Engine Light on when tank is about 1/2 empty

  #1  
Old 09-16-2009, 02:07 AM
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Unhappy Check Engine Light on when tank is about 1/2 empty

My check engine keeps coming on when my gas gets down to about 1/2 tank. I filled the tank up and cleared the check engine light by unpluging the neg battery cable for a few minutes. The light came back on when the fuel level got back to about 1/2 tank empty. Can some one please explain to me what's going on and how to resolve this.
 
  #2  
Old 09-16-2009, 12:56 PM
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Gas cap on tight?
 
  #3  
Old 09-16-2009, 04:01 PM
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as tight as it would go. The gasket looks a little worn.
 
  #4  
Old 09-16-2009, 05:52 PM
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try replqacing the gas tank cap, its a cheap try to fix the problem , or here is a wild idea,,,,,read the code and see where that leads...
 
  #5  
Old 09-16-2009, 10:36 PM
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Thanks. I bought the cap and cel went away.
 
  #6  
Old 09-18-2009, 02:56 PM
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Originally Posted by boribolo View Post
Thanks. I bought the cap and cel went away.
Woohoo!
 
  #7  
Old 09-23-2009, 05:59 PM
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darn light keeps coming back. i change the gas cap. small evap leak.
 
  #8  
Old 09-23-2009, 08:33 PM
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Check the vac lines as a starting point...
 
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