K kalifa g New member Dec 20, 2011 #1 my 1999 mazda protege wont go past 25mph. i just changed both o2 sensors, spark plugs and oil, the shop told me that the catalyst converter is fine, also the check engine light is on what could be the problem
my 1999 mazda protege wont go past 25mph. i just changed both o2 sensors, spark plugs and oil, the shop told me that the catalyst converter is fine, also the check engine light is on what could be the problem
