Help! Have a 91 Buick Century with 172,000 miles. 3.3L v-6. Engine light is on. Engine lacks power (bogs down when in gear, takes long time for auto tranny to shift). I have replaced the throttle position sensor and I am getting the following codes: 14, 21,27,28,31,42 and 46. This is all in park position without even driving the car. Please help !
Aug 12, 2007 at 10:00 AM