I have had some problems with my 98 chevy that started out with a rough idle. I took it in and they said it had a bad MAP sensor and post cat o2. I replaced both and still had the rough idle. I cleared the codes and ran again, got P0151, P0300, P0507, P1153. I checked the right bank plugs and they were fouled and I replaced. Replaced the right bank 02 and cleared the codes. It runs better, but now I still have the P0507 code for fast idle, 1200-1300 in park and about 1100 in gear rolling down the street. What is causing my fast idle?
Feb 28, 2009 at 4:33 PM
