I have a 91 buick century 3.3l v6 that's running rough, has lost a good bit of its gas mileage and is giving me codes 26 and 48. The check engine light doesn't come on til after the car has gotten up to a warmer temperature, even faster on hot days, even slower on cold days
any idea what it might be?
have the same problem?
Friday, October 11th, 2013 AT 1:47 PM