01'WS6

For some reason while im driving down the road most of the time in OD under a light load i get a bit of a stumble. I changed the o2 sensors with 13111's, plugs (tr6's), wires (gmpp) and put a can of sea foam through the gas tank now for some reason it has created this stumble from time to time. Its like the motor completely misses a revolution or two and u can feel the reduce of speed or torque i should say from forward movement. It ran perfect before this all happened and i just decided to do a tune up which i do quite often on it to ensure to myself that everything is fresh. The battery was also totally dead and i charged it back up and this is when i noticed all these problems. Im totally lost in what this could be!

01'WS6

Any suggestions?

2002ls1a4

Have you replaced the fuel filter?

01'WS6

Going to do that today but it was replaced about 6,000 miles ago. Could it be possible the battery is acting up since all this happened when i charged it back up from being dead?

2002ls1a4

Get it tested-might have a bad cell. my car started and ran fine but I got it tested anyway with winter coming and it was the original battery. only had 200 cca so it got replaced.

edcmat-l1

iTrader: (10)

Sounds like a secondary miss. go back over the plug wires, make sure they're clicked on the coils and plugs good.
You might have cracked a plug too. Only way to tell that is to take them out and check em real good.

2002ls1a4

If a4 powerbrake while not moving or while driving if m6 if it has a cracked plug or wire not fully seated it should miss like crazy

01'WS6

It's doesn't seem like a miss situation. It's like the car skips a revolution totally all the way around the cylinders. Its not like a spitter/spudder but more like it loses all fire or fuel for a split second. Very odd deal. I have went back over the wires again already and re-seated all of them. Got one click on the plug and two at the coil on each one.

Goldfinger911

iTrader: (24)

Do you have the abilty to log OBD2 data while driving?

Michael02hawk

iTrader: (26)

What coil packs are your running? If they are MSD, I'd bet $50 at least one of them is going bad.

01'WS6

I got it cured. I had messed with the VE prior of the battery going dead and that was the problem. Its good to go now. I put a new battery on it and now i dont have my low trac light coming on while im at a dead stop. Thanks for the help though!