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Unread 09-24-2012, 05:06 PM   #1
mohr773
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Join Date: Sep 2012
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97 jeep missing

I have changed wires plugs, upstream and down stream oxygen sensors the sensors was because of the codes the plugs and wires for good measure and it still seems to be running rich any suggestions?

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Unread 09-24-2012, 06:56 PM   #2
r0b0
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Quote:
Originally Posted by mohr773
I have changed wires plugs, upstream and down stream oxygen sensors the sensors was because of the codes the plugs and wires for good measure and it still seems to be running rich any suggestions?
Throttle position sensor possibly? Or injectors?
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Unread 09-24-2012, 07:01 PM   #3
Joe-4
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1997 TJ Wrangler 
 
Join Date: Aug 2011
Location: Clearfield, Pennsylvania
Posts: 7
Let me know what you find out. My 97 is doing the same.
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Unread 09-24-2012, 09:02 PM   #4
mohr773
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I forgot I changed the throttle position sensor first
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Unread 09-25-2012, 06:11 AM   #5
pshivers
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2008 KK Liberty 
 
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Location: Westerville, OH
Posts: 113
What are your long term and short term fuel trims at idle and around 2000 rpm?
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Unread 09-26-2012, 08:56 PM   #6
r0b0
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What the **** does that mean?
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Unread 09-27-2012, 07:12 AM   #7
pshivers
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2008 KK Liberty 
 
Join Date: Sep 2012
Location: Westerville, OH
Posts: 113
You said you changed the O2 sensor because of "codes". Using a scan tool, are the O2 sensors functioning now? Did the codes come back? Do they transition lean to rich? Is the upstream sensor stuck lean or rich? What are the short and long term fuel trim numbers doing in response to the O2 sensor signals?
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Unread 10-06-2012, 12:40 PM   #8
Joe-4
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1997 TJ Wrangler 
 
Join Date: Aug 2011
Location: Clearfield, Pennsylvania
Posts: 7
I just changed my check valve and it fixed the jeep from missing and running rich.
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Unread 10-06-2012, 01:42 PM   #9
stephenpetrilak
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Join Date: Aug 2012
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Quote:
Originally Posted by Joe-4
I just changed my check valve and it fixed the jeep from missing and running rich.
I have a 97 jeep doing the same thing missing n stalling I think I solved the problem change your idle air control valve clean the port n throttle body with gum out carb cleaner put back together If its dirty it telling the comp it not getting enough air good luck mine is running fine so far
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