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Old 12-24-2009, 07:35 PM   #1
68350
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Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
Rough Idle/Tripped Codes

Ok this is really pissing me off. Everytime it's cold(say below 0 or so) and I go out and start my 02 gmc(5.3/auto) it trips 2 codes that come up as left and right bank running too lean. The idle is also rough when it's really cold out. When the truck is warmed up, no problems at all. Has a K&N Cold Air Intake, factory O2 sensors/cats, and straight pipes. Nothing else to my knowledge has been done to the motor. Anybody have an idea of what to check to try and correct the code and idle problem? I was told to clean my MAF sensor but don't want to rip my intake apart if I don't have to. thanks
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