LT1 problem
#1
LT1 problem
Have a 96 z28 that stumbles/hesitates/backfires at 3500RPM when I give throttle. Doesn't matter if its WOT or half, when it gets to 3500RPM is just loses all power until I let completely off. Also the car dies every so often just when sitting in park and idling but always starts right back up. Sounds like two things to me, ICM or Opti. Any ideas?
#5
Was a weak fuel pump. Problem got worse and ended up finding out the pump would drop pressure then build back up then lose pressure again. Replaced pump and car runs great.