MustangWorks.com : Ford Forums - View Single Post - 10 mins after drive Code 41 & 91 5.0 HO 1989

88fivepointoh · 07-15-2004, 12:51 PM

the code 91 is a rediculous code. if you haven't changed the 02 with that mileage then go for it. it won't hurt anyting. i am suprised your getting caught with the emissions stuff. do u have headers and off road pipes at all?

07-15-2004, 12:51 PM	#2
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	the code 91 is a rediculous code. if you haven't changed the 02 with that mileage then go for it. it won't hurt anyting. i am suprised your getting caught with the emissions stuff. do u have headers and off road pipes at all?