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12-24-2009, 07:35 PM
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Senior Member
 
Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
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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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68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi |
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