i have a problem similar to this... randomly... my car will just start to sputter (misfiring???) and die...a/f gauge goes to 16... i turn it off then start it again and its fine... sometimes it dies again within 30 seconds...sometimes its good for a week or two...i've had it towed to the shop twice both times they couldnt get it to do it...they said it could be my tach wiring, the ecu or some other wire problem... if neone has any ideas that would be great...ive tried testing if its the way i drive and i dont think it has anything to do w/it because it has died while driving like granny and while getting on it, on highway, off highway, after driving for 3-4 hours strait...after driving for 15 min...so its pretty much completely random when it happens...sometimes it wont completely die when its start to sputter if i push the clutch in and let it roll for a little sometimes it will just got back to normal, a/f reading goes back to normal and the car rides fine again...this has been goin on for months and is quite annoying