KillA6

So here I am with random missfires AGAIN. This time is different though. I was driving home from the shore no problems. I hit some traffic and slowed down and started off in 1st gear and felt the car missfiring. Once I got in 3rd gear it stopped. I got home but everytime I started from stop or driving slow it missfires. I VAGed it and it told me random missfires and missfires in #2 and #5. I though maybe it was bad gas (my car is a 2.7 chipped 91 octane) so I put some octane booster,water remover and I put fresh gas. I also switched out some of the coil packs around. I got the missfire in #2 to stop but still #5 and random codes come up. The car smells like it is running really rich. I did get a 16534 oxygen sensor malfunction code b2 51 once but it has not come back. I wondered if its from the additives. It is idling really rough. I have all new plugs. So basically the symptoms are rough idle,missfires at low gears. Although I am not 100% if it is still going away in the higher gears still b/c I will not drive it until I figure out whats up. I was thinking maybe fuel filter or injectors. Not really sure. Any help would be great!!!

2fst4u2c

(timing)

Ah10@WMS

measuring block 002, whats your engine load at idle?

2fst4u2c

QUOTE: "So basically the symptoms are rough idle, missfires at low gears."

2fst4u2c

I'm throwing out ideas... you're flaming. relax.

KillA6

does feel like it is missfiring at idle or maybe just really rough idle but then it does missfire when I crack the gas pedal

quickaudi:STFA

how long since you changed the spark plugs? like 5 miles or 5000?

KillA6

I would say 300 miles

quickaudi:STFA

did you torque them down to the proper torque spec?

KillA6

problem with one not being tourqued right a few months ago but that caused missfires at higher rpms and higher gears. The car was running fine for a good 500 miles since I did any work to it.