nemss1

cant a bad battery or bad alternator cause a really low idle also???

soslo

iTrader: (12)

A bad ground will do it as well. I had a loose ground on the back of the driver's side cylinder head, which was causing the driver's back injectors to cut in/out, causing a stumbling idle, etc. That took forever to troubleshoot, and that ground bolt is nearly impossible to get too...and once you feel it, it's hard to tell if that ring connector is "loose"

emenny81

iTrader: (3)

is there another way to get the IAC readings other than Hptuners or ls1edit ??

I just want to see if this if this sensor is bad because im having the same idle issues.