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  #1  
Old 09-19-2009, 06:33 AM
asphaltcowboy1074 asphaltcowboy1074 is offline
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02 7.3 check engine light

My light comes on when I am driving highway speeds. It never stays on long, 5 min or so and as soon as you turn the ignition off, it clears the code so I cant get a read on it. It happens when downshifting and accelerating to pass or pull a hill. Any ideas? I do have a superchips tuner installed but I have tried both with and without programming installed with the same results. Other than the light coming on, the truckruns fine. I have about 125k on it and this has also happened through 2 cam sensors.
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Old 09-19-2009, 07:09 AM
greedy737 greedy737 is offline
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Maybe an over boost thing, but if the light came on it stored a code. How did you read the codes?
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Last edited by greedy737; 09-19-2009 at 07:11 AM. Reason: sorry I didn't see you said downshifting to!
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  #3  
Old 09-19-2009, 10:50 AM
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I suspect if you were to pull the codes with a scanner, its gonna be either P1211 or an overboost code.
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Old 09-19-2009, 01:03 PM
asphaltcowboy1074 asphaltcowboy1074 is offline
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Is that anything to worry about or is there something I can do to fix it?
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Old 09-19-2009, 08:59 PM
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Depends on the code.
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Old 09-19-2009, 09:43 PM
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I thought the Superchips tuner could pull codes? Just because the light goes out doesn't mean the codes dissapear. The PCM will remember the codes for a while, even after the light goes out.

Another P1211 guess here.
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Old 09-19-2009, 10:45 PM
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  #8  
Old 09-20-2009, 12:35 AM
asphaltcowboy1074 asphaltcowboy1074 is offline
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I have the new controller. Just sent themmy old one and they sent me the new version. I will see if I can pull the code tomorrow. I know I could pull codes withthe old one but I never got a code for this scenario. I willpost what I find.
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Old 09-20-2009, 12:35 AM
 
 
 
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