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Unread 08-22-2012, 04:53 PM   #1
lunerbator
Registered User
2004 KJ Liberty 
 
Join Date: Aug 2009
Location: Maine
Posts: 3
anyone have any ideas?

i have a 04 liberty 5 speed. i keep getting a check engine light. there are three codes. one is bank 1 sensor 1 lean, bank 2 sensor lean, bank 1 sensor 2 lean.
i have changed both o2 in the rear. my jeep has no power and is getting about 10 miles per gal. it also kicks or bogs down when i need the power. when i get on the turn pike it takes me 1/4 mile to go from 45 - 65 mph. any ideas would be lovely right now.

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Unread 08-22-2012, 07:45 PM   #2
tjkj2002
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2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
Posts: 8,099
Well did you change the front O2 sensor as well? Don't use bosch O2 sensors,only use Denso or NTK(NGK) O2 sensors in a Chrysler.

Could also have other issues like bad cats or a intake leak or low fuel pressure.
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Unread 08-23-2012, 02:15 PM   #3
lunerbator
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2004 KJ Liberty 
 
Join Date: Aug 2009
Location: Maine
Posts: 3
im thinking i have a air leak somewhere
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Unread 08-23-2012, 03:13 PM   #4
streetglideok
Web Wheeler
2005 KJ Liberty 
 
Join Date: Jul 2011
Location: Colorado Springs, Colorado
Posts: 2,399
Doubtful. I would verify you have proper fuel pressure before going further. Once that has been ruled out, there are a couple of areas you need to look at and verify.
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check engine light , issues , liberty , o2 sensor
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