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2003 Jeep Liberty Emissions

Tiny
DEWAYNED4
  • MEMBER
  • 2003 JEEP LIBERTY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 80,000 MILES
My engine warning light is on. The computer code says it is an emissions leak. Where would be a good place to start looking for the leak? Most likely cause? Could it just be sensor failure?

Dewayne
Wednesday, May 21st, 2008 AT 7:58 PM

5 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Do you mean evap leak? Yes it could be a sensor regaurdless, first and easiest thing to check is your gas cap make sure its tight. That will cause an engine light. Check that and get back to me
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Wednesday, May 21st, 2008 AT 9:51 PM
Tiny
DEWAYNED4
  • MEMBER
  • 3 POSTS
It might be evap, im not sure. Its been about 3 months. It hasnt affected performance any though. I will go get the code again tomorrow.
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Wednesday, May 21st, 2008 AT 10:21 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Ok, good
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Wednesday, May 21st, 2008 AT 10:31 PM
Tiny
DEWAYNED4
  • MEMBER
  • 3 POSTS
There are 2 codes. P0442, P0455. Both are EVAP Emission contol system leak, but one says small and the other large.
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Thursday, May 22nd, 2008 AT 2:25 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Check your gas cap, and look in the left hand corner of your engine compartment for any hoses, cracks in hoses or disconnected hoses. Gas cap has to be on tight. Or you wil get an engine light. But look for them hoses. Do you smell gas?
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Thursday, May 22nd, 2008 AT 2:51 PM

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