I had my catalytic converter stolen, replaced converter but my gas mileage is still very bad, half what it was before theft, code 0171 coming up, when I drove it without the converter (about 2 weeks) could that have screwed up the O2 sensors or MAP sensor? Truck is 4.7 litre V-8 Quad Cab Dakota 2002. There is an O2 sensor upstream and downstream of the converter. Thank You Sincerely, Mike
have the same problem?
Tuesday, December 27th, 2011 AT 6:00 PM