Lsj Runs Peg Rich on Wideband
Hi im Jose, im new to this site and wanted to see if anyone found a solution to this problem. I have a 2007 cobalt ss s/c, just install a 2.1L gen3 gridle block, neutral balance shafts, 4340 rods, je pistons 9:5:1 ratio, port and polished head with stage2 cams, #78 valve springs and retainers, ati balancer, Zzp3" intake, zzp long tubes, hypersingle clutch stage3, 3" exhaust, tvs 1320 supercharger on 2.8 pulley on new tune.
This is my problem, at idle it jumps from 500-1500 rpms. At random times it falls to 10 afr, thenwants to stall out. I replaced map, and ignition coils, spark plugs, injector harness, also replaced o2 sensors. I checked for short to ground on maf and resistance. Cant seem to figure it out, if any one had a problem like this please help!