rough idle

[backwoodz]

about a month ago i had the flange on my manifold pipe fall off on my 2000 gmc sierra. i welded it back together but i have a really bad idle and it bogs down and doesn't want to go into gear right away when i take off. just wondering since i ran it a day like that that i might have messed a sensor up or something. the computer keeps giving me the code p0157 but i have replaced that o2 sensor could it be something else causing it?? someone please help i am at my wits end with it

 

[backwoodz]

i also drove it with a bad recap tire on it for a bit and shook the shit out of it after that it didn't run real good could it be that i shook something too much and messed it up? like the MAF? please let me know

 

[Molson02536]

about a month ago i had the flange on my manifold pipe fall off on my 2000 gmc sierra. i welded it back together but i have a really bad idle and it bogs down and doesn't want to go into gear right away when i take off. just wondering since i ran it a day like that that i might have messed a sensor up or something. the computer keeps giving me the code p0157 but i have replaced that o2 sensor could it be something else causing it?? someone please help i am at my wits end with it

P0157 indicates a lean issue on Bank 2, recheck your O2 wire harness and lead wire. Also make sure there is no exhaust leak that is causing your O2 sensor to give a false reading of a lean condition to Bank2 (where the #2 spark plug is located). you can try swapping out your O2 sensor from bank1 and bank2 and see if there is a difference in your DTC codes.