ronsmoove

Changed the spark plugs on my 2002 gs300 and put everything back together, started her up and now she won't run. I'm getting a very rough idle and then she just shuts off after about 4 seconds. What could this be? The plugs are ngk iridium's and I do believe that these are the right plugs for this car.

BayAreaLex

If all you did was the plugs then it's a pretty easy answer... Either one more more plugs are bad or don't have a good connection to the wires. Redo it.

That or you knocked something unrelated out of whack during the swap.

1UGLYGS

iTrader: (2)

coil packs maybe? also could be bad sensors on your manifold. Any check engine lights? Run the codes if their (and their should...) are and look them up.