99_ls1_z28

iTrader: (8)

It seems to runs fine until it warms up and after it warms up, it sputters and backfires. One time it dit it so bad that it backfires like 3-4 times and engine died and my tack didnt work...I already replace the O2 sensors and still doing the same thing. Anyone have any ideas what could be the problem? Its a 00 ls1 A4...

RARON455

iTrader: (35)

Perhaps a coil pack going out, when heated causing an intermittant problem by opening up and not firing for a cycle or two, then igniting the unburned fuel? maybe a plug starting to foul. Is the car throwing any codes?

myk

iTrader: (4)

You've gotta be throwing codes. Post them as soon as you can...

99_ls1_z28

iTrader: (8)

thanks guys...the problem ended up being the wiring in the crank position sensor. Replaced it and problem solved