Hello I’m new to this form I’m have trouble finding out what’s wrong with my car I have a 2011 Audi A4 manual with 130k I did the timeing chain at 110k and car ran fine after recently I have an issue with rlly bad idle the car will shake erratically only at idle if I would leave it at idle the car would go into limo mode the epic light will go on. This only happens at idle the car runs perfectly fine above 1200 rpms i
have power runs great, I recently did a carbon clean by hand dident help, i cheek compression got 150 seems good for a high mileage, changed my spark plugs noting , cheek the coil packs seems to be good , the code I get when I plug it into the computer is po3002 misfire on cilinder 2 but I recently used a snap on computer and it said all my Cylinders are missfireing but 2 is the worst. And I would like to add that my parking brake malfunction/airbag light is on . Can someone please help me I don’t have the money to bring it to the shops I’m 25 and I have a kid comeing in 1 mouth

Thank you for replying!

i recently used a snap on computer scanner and it said all my cylinders are missfireing but 2 and 3 are the worst I took apart my PCv valve and noticed a lot of oil in it idk if that normal. But it appears to be good not sure. I pulled the dipstick cover and it makes the car shake even more so I think I don’t have a vacuum leak this started happening after I went to Valvoline and got my oil change and the over filled the oil so when I pulled away the car started shouting out a lot of white smoke so I turned around and they did the oil change again car ran fine after about a week after I had this problem oh and when I had turn around my car gave me a cheek engine like for a 02 sensor but we cleared it and never got that code again