Vag-com is showing that all my cylinders are misfiring. I've just replaced my fuel filter, spark plugs, and cleaned out my MAF. Im probably going to be changing out my ignition coils to see if that fixes the problem. Does anyone know what other problems it could be?

Also, my car doesnt jerk or buck. Is it normal to have that many misfires without even feeling it?

 

Injectors? Could be the coils, but usually just one coil fails then the others go out shortly afterwords... how long have you had this issue?

 

im really not to sure. for at least 2 month. thats when i got vag com working.

 

well id start by pulling the plugs again to see if there fouled, clear all your codes and if they come back on itll tell you which cylinder. if it was a coil the car would run like s*it and idle rough and not have any power(just had it happen to me) and it is possible to be the injectors, check your grounds and wiring on both the coils and injectors

 

Ok, i'm in the middle of a huge snow storm. AGAIN. so when it clears up ill pull the plugs. They are only 4 days old now... im going to pick up some coils and swap em out. I dont know when they were last changed. Also, 4 days back when I replaced everything mentioned above, i did clear my codes. Now when im measuring blocks 14,15,16 on vag-com, Misfires show up across the bored. more during city driving and barely any during highway driving. Also the only code my car is throwing is P0327 (knock sensor low input). So im really confused. Im supposedly getting tons of misfires but not throwing a code, and not getting jerking. Where do i find wiring for coils? I looked briefly but didn't see anything.

 

the wiring for your coils is just plugged into them. there is a ground that is attached to the valve cover, i forgot to hook mine up and had some problems. and i would probably replace the knock sensor. this might be an odd question but what mods do you have done to your car and have you pulled the dipstick and smelled the oil? and with the car running pull the oil filler cap and make sure your not getting pressure out of the crankcase. ive seen engines run too lean and blow a hole in a piston especially under boost. that could cause your kncok sensor to be out of wack and ur misfire.

 

and your oil would smell like gas or at least have a gaseous odor

 

ok well i just did some more searching and i did find a wiring from ecs tunning. ill probably get a new knock sensor too. as for mods go. i have a cone intake. i have a borla cat back exhaust. and the rest is interior stuff like amp, sub, red led. i havent done anything to the engine really. Ill try smelling my oil when i can. I assume the crankcase is the part of the engine the oil cap opens too? haha sry im bad with car lingo.

 

basically the crank case is everything other than the cylinder, where the crank is where the oil is the void between the head and valve cover etc. and yes thats were the oil cap opens to

 

thanks for all the info rikk lammi. Your a real help. Ill be sure to do everything mentioned here. Whats your opinion with the injectors as jakej suggested?