Just recently my gn started hesitating real bad cold,once warmed up ran better but still had a stumble off idle.the last code i had was 13 but after i cleared it,it never came back.i changed the o2 sensor anyway with a new denso and cleaned the iac,i also checked for vacuum leaks.the car seems to run better but still hesitates and will cough if you try to rev it fast.last year i had to replace my coil pack plus did a tune up.motor is mostly stock with poston thumbwheel,hot wired hp pump,LT1 MAF WITH MAF TRANSLATOR,9" k&n,gn1 exhaust,adjustable fuel reg.,boost gauge & 2.1 scan master.
Hot idle readings (o2's are not steady)
o2's 280 -800
af 05-06
l8 33-38
int 119-140
bl 155-160
iac 23
TPS .42
Hot idle readings (o2's are not steady)
o2's 280 -800
af 05-06
l8 33-38
int 119-140
bl 155-160
iac 23
TPS .42