Checked it out and it said #2 mis-fire and running lean. Went ahead and replaced all the coils and plugs... still get the same read. Is there some thing I'm missing?And how can you find out why its running lean?

 

dirty injectors maybe, i would do a compression test while your at it. you also didnt say which engine or car you had and what year.

 

Sorry. 2001.5 1.8T with stock k03S. APR Chipped, Carbonio, Test Pipe, 2.5 straight with Euro-Tuned Exhaust by SilverLine, 5-speed... thanks guys

 

Check all your vacuum lines and make sure all three vacuum check valves aren't broken.
What does data block 32 say in the ECM?

 

I think it is your ignition control module that sits on top of the air box. I had the same problem. It was cylinder #2 for my car as well.

 

Sounds like my old problem and it was a vacuum leak! Good luck

 

I'm with merbland. Its a common problem. Always #2.

 

the ICM doesnt always miss on number 2, thats just a coincidence. if you change your coil packs around and the miss follows the coils, its a bad coil. if the missfire stays in the cylinder it was origionaly in, its usualy the ICM.

 

I think he said he already replaced the coils. And "always" may be too strong, but there is a common problem with the control module that regularly shows up as a #2 misfire and lean code. Its more than coincidence.

 

He doesn't have an ICM. I'm also thinking vacuum leak.