in the process of trying to figure out my gear box problem and pass emissions...i go to have my codes pulled today and i have 14 codes wtf!!FML! I am misfiring on all 8 cylinders how is this even possible i have done nothing to my car to mess with that...All i have done is cleaned my MAFS and throttle body... both with the proper cleaning solutions and i didnt touch anything to MAFS...i do have a vacuum leak but i have had one...I did the spark plugs last year and replaced half of the ignition coils...I have no idea where to even start...I have tried to go to shops and every mechanic has run no one has the gull to work on jag all of the " take to jag dealership" ...helppp!!!!!!!!1

 

can you post the codes that come back after erasing them?

Misfires are usually due to O2 being flakey, or MAF and airleaks...I've seen blocked cats (usually one side) or blocked centre box on the exhaust....

 

Yes I will post tomaro morning after I get codes pulled again