2004-2009 Mazda3 Discussion
My wife's 05 3 has about 105k miles on it and we just changed the plugs and did an oil change. Afterwards it's been having a strange RPM bouncing issue. It only happens in 4th gear around 1000rpm. It'll go up to 1500 then back down to 1000 a few times then stop. It will do this anywhere from 2...