I have an 2005 sentra 1.8L with 100,000 miles. Recently, it started idleling ruff only in the morning and when its cold. The car's computer gives a PO300. I replaced the spark plugs, cam sensor, and exchanged coils on all four pistons but the car still idles bad. The car does not return a complete O2 test cycle. If it was the O2 sensor wouldnt the car specify specificlly that code. Can you please direct me in the right direction?
have the same problem?
Tuesday, December 7th, 2010 AT 3:53 PM