T thor999 New member Jul 24, 2011 #21 I HAVE replaced plugs, cleaned MAF and the others, and am just assuming I could use a new O2 sensor as my mileage is bad, and my runner has 144,xxx miles on it. Last edited: Jul 24, 2011
I HAVE replaced plugs, cleaned MAF and the others, and am just assuming I could use a new O2 sensor as my mileage is bad, and my runner has 144,xxx miles on it.
LittleCaesar New member Jul 24, 2011 #22 It helped my MPGs by one to two depending on conditions. And I changed mine at 80,000.
