2004-2009 Mazda3 Discussion
Hi! I have an old Mazda 3 2003. 1.6 fuel. It started jerking (back and forward), like it was cutting off fuel, on highway at about 4000 rpm. Oil was low. Since then oil + filter, fuel filter and spark plugs were replaced. If I don't release gas but keep it jerking at 4000 rpm, CEL with P0340...