2001 Chev Impala

2001 CHEVROLET IMPALA
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SMEDLAP
  • MEMBER
  • 3 POSTS
I had someone siphon 1/4 tank of gas from a full tank as I did find my gas cap off. Car ran fine and still does, although after an 1 1/2 hrs driivng the engine ligth came on. The car had just been servied before this. Any suyggestions?
Jul 23, 2006 at 5:41 AM
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MIKEYBDMAN
  • ✓Experienced Mechanic
  • 623 POSTS
Some times the engine light will come on if the gas cap is not on good. You can check that first.

If not the cap, you will need to get the engine code read to tell you what is wrong.

I suggest Auto Zone or Advance to read the code for you.
Jul 23, 2006 at 10:40 AM
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DEMEARSJR
  • ✓Experienced Mechanic
  • 110 POSTS
Probably come up as evap system (small leak). I work at AutoZone. Definitely check your gas cap.
Jul 23, 2006 at 3:26 PM
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SMEDLAP
  • MEMBER
  • 3 POSTS
I have replaced the gas cap with the manufactures one, Still the light goes off and then comes back on. the code reader sasy P0440 and yes it ies the EVAP. The car has been inthe shop four tiems since and still they do not know. It is costing dolalrs for everyu tiem they hook up machine and get the say answer. Any furtehr suggetsionsother then checking all lines myself and next step takign the gas tank off.
Sep 27, 2006 at 6:13 PM
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