running rough at idle
Thread Starter
Cruising
Joined: Sep 2011
Posts: 11
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running rough at idle
hi guys, ive got a 2000 with the LS1 and it runs very bad at idle. no check engine light either. i hooked up a scanner and looked at all the live data and i saw the short term fuel trim was around +52 on both banks and the smell of fuel would burn your eyes. if i unplug the mass airflow, it idles smooth, fuel trim goes back to 0. when i plug the MAF back up, it dies. i took the MAF of off another C5 of the same year that was running fine and tried on mine but it still would not idle. so, with all that said, its obviously dumping fuel for some reason, i just have no idea why. this issue just came on all of a sudden, no prior issues. anybody out there got any ideas???
