I just bought a 97 328is with 100k miles. Before I can register it, I need to pass emmissions. The first time I went for a test, it failed. I got it diagnosed and got an estimate. They said that I needed 2 new 02 sessors in bank 1. They also recommended that I run some sort of cleaner through the cat to get rid of the carbon, i believe. I replaced the sensors and cleaned the carbon. Had a retest, but the computer aborted. They said I needed to drive it more for the computer to reset. I drove it for another week. At least once a day from hot to cold, about 10 miles each time. Now- I have 20 drive cycles. Went to have a retest at a different garage. The computer aborted again. I have one mechanic telling me to replace the cat I have another mechanic telling me to drive the car more because I need to flush out the cleaner I put through the cat. Does anyone have an opinion? Thanks!!
- posted
18 years ago